Toshiba Ras 10Gavp E Service Manual

2014-12-13

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R410A

FILE NO. A05-008

PRINTED IN JAPAN, Nov.,2005 ToMo

SERVICE MANUAL

SPLIT TYPE

Indoor Unit Outdoor Unit

RAS-B10GKVP-E RAS-10GAVP-E

RAS-B13GKVP-E RAS-13GAVP-E

RAS-B16GKVP-E RAS-16GAVP-E

– 2 –

CONTENTS

1. SAFETY PRECAUTIONS .......................................................................... 3

2. SPECIFICATIONS ..................................................................................... 5

3. REFRIGERANT R410A ............................................................................. 7

4. CONSTRUCTION VIEWS ........................................................................ 15

5. WIRING DIAGRAM .................................................................................. 17

6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 18

7. REFRIGERANT CYCLE DIAGRAM ........................................................ 19

8. CONTROL BLOCK DIAGRAM ................................................................ 22

9. OPERATION DESCRIPTION................................................................... 24

10. INSTALLATION PROCEDURE ................................................................ 47

11. HOW TO DIAGNOSE THE TROUBLE...................................................... 60

12. HOW TO REPLACE THE MAIN PARTS................................................... 82

13. EXPLODED VIEWS AND PARTS LIST ................................................. 101

Cord Heater Installation Work ........................................................ Appendix-1

– 3 –

1. SAFETY PRECAUTIONS

For general public use

Power supply cord of outdoor unit shall be more than 1.5 mm 2 (H07RN-F or 245IEC66) polychloroprene

sheathed flexible cord.

•Read this “SAFETY PRECAUTIONS” carefully before servicing.

•The precautions described below include the important items regarding safety. Observe them without fail.

•After the servicing work, perform a trial operation to check for any problem.

•Turn off the main power supply switch (or breaker) before the unit maintenance.

CAUTION

New Refrigerant Air Conditioner Installation

• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT

DESTROY OZONE LAYER.

R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because

the working pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22. Accompanied with the

adoption of the new refrigerant, the refrigeration machine oil has also been changed. Therefore, during

installation work, be sure that water, dust, former refrigerant, or refrigeration machine oil does not enter into

the new type refrigerant R410A air conditioner circuit.

To prevent mixing of refrigerant or refrigerating machine oil, the sizes of connecting sections of charging

port on main unit and installation tools are different from those used for the conventional refrigerant units.

Accordingly, special tools are required for the new refrigerant (R410A) units. For connecting pipes, use new

and clean piping materials with high pressure fittings made for R410A only, so that water and/or dust does

not enter. Moreover, do not use the existing piping because there are some problems with pressure fittings

and possible impurities in existing piping.

CAUTION

TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY

This appliance must be connected to the main power supply by a circuit breaker or a switch with a contact

separation of at least 3 mm.

The installation fuse (25A D type ) must be used for the power supply line of this air conditioner.

DANGER

• ASK AN AUTHORIZED DEALER OR QUALIFIED INSTALLATION PROFESSIONAL TO IN-

STALL/MAINTAIN THE AIR CONDITIONER.

INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE, ELECTRIC SHOCK OR FIRE.

•TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE

ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

DANGER: HIGH VOLTAGE

The high voltage circuit is incorporated.

Be careful to do the check service, as the electric shock may be caused in case of touching parts

on the P.C. board by hand.

•CORRECTLY CONNECT THE CONNECTING CABLE. IF THE CONNECTING CABLE IS INCOR-

RECTLY CONNECTED, ELECTRIC PARTS MAY BE DAMAGED.

•CHECK THAT THE EARTH WIRE IS NOT BROKEN OR DISCONNECTED BEFORE SERVICE AND

INSTALLATION. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

– 4 –

•DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS. FAILURE

TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.

•TO PREVENT THE INDOOR UNIT FROM OVERHEATING AND CAUSING A FIRE HAZARD, PLACE

THE UNIT WELL AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEAT

REGISTORS, FURNACE, STOVES, ETC.

•WHEN MOVING THE AIR-CONDITIONER FOR INSTALLATION IN ANOTHER PLACE, BE VERY CARE-

FUL NOT TO ALLOW THE SPECIFIED REFRIGERANT (R410A) TO BECOME MIXED WITH ANY

OTHER GASEOUS BODY INTO THE REFRIGERATION CIRCUIT. IF AIR OR ANY OTHER GAS IS

MIXED IN THE REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CIRCUIT WILL

BECOME ABNORMALLY HIGH AND IT MAY RESULT IN THE PIPE BURSTING AND POSSIBLE PER-

SONNEL INJURIES.

•IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE SERVICE

WORK AND THE INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE

REFRIGERANT GAS IS HEATED, SUCH AS BY FIRE, GENERATION OF POISONOUS GAS MAY

RESULT.

WARNING

•Never modify this unit by removing any of the safety guards or bypass any of the safety interlock

switches.

•Do not install in a place which cannot bear the weight of the unit. Personal injury and property

damage can result if the unit falls.

•After the installation work, confirm that refrigerant gas does not leak.

If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas

may generate.

•The electrical work must be performed by a qualified electrician in accordance with the Installation

Manual. Make sure the air conditioner uses an exclusive circuit.

An insufficient circuit capacity or inappropriate installation may cause fire.

•When wiring, use the specified cables and connect the terminals securely to prevent external

forces applied to the cable from affecting the terminals.

•Be sure to provide grounding.

Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone cables.

•Conform to the regulations of the local electric company when wiring the power supply.

Inappropriate grounding may cause electric shock.

CAUTION

•Exposure of unit to water or other moisture before installation may result in an electrical short.

Do not store in a wet basement or expose to rain or water.

•Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify

the noise level of the unit or where noise or discharged air might disturb neighbors.

•To avoid personal injury, be careful when handling parts with sharp edges.

•Perform the specified installation work to guard against an earthquake.

If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.

For Reference:

If a heating operation would be continuously performed for a long time under the condition that the outdoor

temperature is 0°C or lower, drainage of defrosted water may be difficult due to freezing of the bottom plate,

resulting in a trouble of the cabinet or fan.

It is recommended to procure an antifreeze heater locally for a safe installation of the air conditioner.

For details, contact the dealer.

– 5 –

2. SPECIFICATIONS

2-1. Specifications

RAS-B10GKVP-E/RAS-B13GKVP-E/RAS-B16GKVP-E, RAS-10GAVP-E/RAS-13GAVP-E/RAS-16GAVP-E

Indoor RAS-B10GKVP-E RAS-B13GKVP-E RAS-B16GKVP-E

Unit model Outdoor RAS-10GAVP-E RAS-13GAVP-E RAS-16GAVP-E

Cooling capacity (kW) 2.5 3.5 4.5

Cooling capacity range (kW) 0.5–3.5 0.6–4.5 0.8–5.0

Heating capacity (kW) 3.2 4.2 5.5

Heating capacity range (kW) 0.6–5.8 0.6–6.6 0.8–7.8

Power supply 1 Ph/50Hz/220–240 V, 1 Ph/60Hz/220 V

Operation mode Cooling Heating Cooling Heating Cooling Heating

Running current (A) 0.15 0.15 0.15 0.15 0.15 0.15

Power consumption (W) 30 30 30 30 30 30

Indoor

Power factor (%)878787878787

Operation mode Cooling Heating Cooling Heating Cooling Heating

Running current (A) 2.48/2.37/2.26 3.25/3.10/2.96 4.25/4.06/3.89 4.52/4.31/4.13 6.45/6.17/5.90 7.07/6.76/6.47

Power consumption (W) 520 680 890 945 1350 1480

Power factor (%)959595959595

Electric

characteristics

Outdoor

Starting current (A) 3.40/3.25/3.11 4.67/4.46/4.28 7.22/6.91/6.62

COP (Cooling/Heating) 4.55/4.51 3.80/4.31 3.26/3.64

High (Cooling/Heating) (dB•A) 42/43 43/44 45/45

Medium (Cooling/Heating) (dB•A) 33/34 34/35 36/36

Indoor

Low (Cooling/Heating) (dB•A) 27/27 27/27 29/29

Operating

noise

Outdoor (Cooling/Heating) (dB•A) 46/47 48/50 49/50

Unit model RAS-B10GKVP-E RAS-B13GKVP-E RAS-B16GKVP-E

Height (mm) 250 250 250

Width (mm) 790 790 790Dimension

Depth (mm) 215 215 215

Net weight (kg) 9 9 9

Fan motor output (W) 30 30 30

Indoor unit

Air flow rate (Cooling/Heating) (m³/h) 550/610 560/640 640/660

Unit model RAS-10GAVP-E RAS-13GAVP-E RAS-16GAVP-E

Height (mm) 550 550 550

Width (mm) 780 780 780

Dimension

Depth (mm) 290 290 290

Net weight (kg) 35 37 37

Motor output (W) 750 750 750

Type Twin rotary type with DC-inverter variable speed controlCompressor

Model DA111A1F-20F1 DA111A1F-20F1 DA111A1F-20F1

Fan motor output (W) 43 43 43

Outdoor unit

Air flow rate (Cooling/Heating) (m³/h) 2150/2150 2410/2410 2410/2410

Type Flare connection Flare connection Flare connection

Liquid side Ø6.35 Ø6.35 Ø6.35

Indoor unit Gas side Ø9.52 Ø9.52 Ø12.7

Liquid side Ø6.35 Ø6.35 Ø6.35

Outdoor unit Gas side Ø9.52 Ø9.52 Ø12.7

Maximum length (m) 25 25 25

Maximum chargeless length (m) 15 15 15

Piping

connection

Maximum height difference (m) 10 10 10

Name of refrigerant R410A R410A R410A

Refrigerant Weight (kg) 0.82 0.96 0.96

Power supply 3 Wires : includes earth (Outdoor)

Wiring

connection Interconnection 4 Wires : includes earth

Indoor (Cooling/Heating) (°C) 21–32/0–28 21–32/0–28 21–32/0–28

Usable temperature range Outdoor (Cooling/Heating) (°C) 5–43/–15–24 5–43/–15–24 5–43/–15–24

Installation plate 1 1 1

Wireless remote controller 1 1 1

Batteries 222

Remote controller holder 1 1 1

Zeolite-plus filter 1 1 1

Mounting screw 6 (Ø4 × 25L) 6 (Ø4 × 25L) 6 (Ø4 × 25L)

Remote controller holder

mounting screw 2 (Ø3.1 × 16L) 2 (Ø3.1 × 16L) 2 (Ø3.1 × 16L)

Plasma pure filter 1 1 1

Installation manual 1 1 1

Indoor unit

Owner’s manual 1 1 1

Drain nipple 1 1 1

Accessory

Outdoor unit Water-proof rubber cap 2 2 2

•The specifications may be subject to change without notice for purpose of improvement.

– 6 –

* Capacity ratio : 100% = 2.5 kW (RAS-B10GKVP-E)

3.5 kW (RAS-B13GKVP-E)

4.5 kW (RAS-B16GKVP-E)

100

110

5032 34 36 38 40 4233 35 37 39 41 43 44 45 46

Outdoor temp. (˚C)

Capacity ratio (%)

120

100

–15 –10 –50 510

Capacity ratio (%)

Outdoor temp. (˚C)

• Conditions

Indoor : DB 20˚C

Indoor air flow : High

Pipe length : 7.5m

• Conditions

Indoor : DB27˚C/WB19˚C

Indoor air flow : High

Pipe length : 7.5m

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

Current (A)

Compressor speed (rps)

0 20406080 120100

• Conditions

Indoor : DB 27˚C/WB 19˚C

Outdoor : DB 35˚C

Air flow : High

Pipe length : 7.5m

Voltage : 230V

Current (A)

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

10 10

Compressor speed (rps)

0 20406080 120140 140

100

• Conditions

Indoor : DB 20˚C

Outdoor : DB 7˚C/WB 6˚C

Air flow : High

Pipe length : 7.5m

Voltage : 230V

2-2. Operation Characteristic Curve

2-3. Capacity Variation Ratio According to Temperature

– 7 –

3. REFRIGERANT R410A

This air conditioner adopts the new refrigerant HFC

(R410A) which does not damage the ozone layer.

The working pressure of the new refrigerant R410A

is 1.6 times higher than conventional refrigerant

(R22). The refrigerating oil is also changed in

accordance with change of refrigerant, so be careful

that water, dust, and existing refrigerant or refrigerat-

ing oil are not entered in the refrigerant cycle of the

air conditioner using the new refrigerant during

installation work or servicing time.

The next section describes the precautions for air

conditioner using the new refrigerant. Conforming to

contents of the next section together with the

general cautions included in this manual, perform

the correct and safe work.

3-1. Safety During Installation/Servicing

As R410A’s pressure is about 1.6 times higher than

that of R22, improper installation/servicing may

cause a serious trouble. By using tools and materi-

als exclusive for R410A, it is necessary to carry out

installation/servicing safely while taking the following

precautions into consideration.

1. Never use refrigerant other than R410A in an air

conditioner which is designed to operate with

R410A.

If other refrigerant than R410A is mixed, pressure

in the refrigeration cycle becomes abnormally

high, and it may cause personal injury, etc. by a

rupture.

2. Confirm the used refrigerant name, and use tools

and materials exclusive for the refrigerant R410A.

The refrigerant name R410A is indicated on the

visible place of the outdoor unit of the air condi-

tioner using R410A as refrigerant. To prevent

mischarging, the diameter of the service port

differs from that of R22.

3. If a refrigeration gas leakage occurs during

installation/servicing, be sure to ventilate fully.

If the refrigerant gas comes into contact with fire,

a poisonous gas may occur.

4. When installing or removing an air conditioner, do

not allow air or moisture to remain in the refrig-

eration cycle. Otherwise, pressure in the refrig-

eration cycle may become abnormally high so

that a rupture or personal injury may be caused.

5. After completion of installation work, check to

make sure that there is no refrigeration gas

leakage.

If the refrigerant gas leaks into the room, coming

into contact with fire in the fan-driven heater,

space heater, etc., a poisonous gas may occur.

6. When an air conditioning system charged with a

large volume of refrigerant is installed in a small

room, it is necessary to exercise care so that,

even when refrigerant leaks, its concentration

does not exceed the marginal level.

If the refrigerant gas leakage occurs and its

concentration exceeds the marginal level, an

oxygen starvation accident may result.

7. Be sure to carry out installation or removal

according to the installation manual.

Improper installation may cause refrigeration

trouble, water leakage, electric shock, fire, etc.

8. Unauthorized modifications to the air conditioner

may be dangerous. If a breakdown occurs

please call a qualified air conditioner technician

or electrician.

Improper repair’s may result in water leakage,

electric shock and fire, etc.

3-2. Refrigerant Piping Installation

3-2-1. Piping Materials and Joints Used

For the refrigerant piping installation, copper pipes

and joints are mainly used. Copper pipes and joints

suitable for the refrigerant must be chosen and

installed. Furthermore, it is necessary to use clean

copper pipes and joints whose interior surfaces are

less affected by contaminants.

1. Copper Pipes

It is necessary to use seamless copper pipes

which are made of either copper or copper alloy

and it is desirable that the amount of residual oil

is less than 40 mg/10 m. Do not use copper

pipes having a collapsed, deformed or discolored

portion (especially on the interior surface).

Otherwise, the expansion valve or capillary tube

may become blocked with contaminants.

As an air conditioner using R410A incurs pres-

sure higher than when using R22, it is necessary

to choose adequate materials.

Thicknesses of copper pipes used with R410A

are as shown in Table 3-2-1. Never use copper

pipes thinner than 0.8 mm even when it is

available on the market.

– 8 –

Table 3-2-1 Thicknesses of annealed copper pipes

Nominal diameter

1/4

3/8

1/2

5/8

Outer diameter (mm)

6.35

9.52

12.70

15.88

Thickness (mm)

R410A R22

0.80 0.80

1.00 1.00

2. Joints

For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.

a) Flare Joints

Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds

20 mm. In such a case, socket joints can be used.

Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 3-2-3 to 3-2-6 below.

b) Socket Joints

Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose

diameter is larger than 20 mm.

Thicknesses of socket joints are as shown in Table 3-2-2.

Table 3-2-2 Minimum thicknesses of socket joints

Nominal diameter

1/4

3/8

1/2

5/8

Reference outer diameter of

copper pipe jointed (mm)

6.35

9.52

12.70

15.88

Minimum joint thickness

(mm)

0.50

0.60

0.70

0.80

3-2-2. Processing of Piping Materials

When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not

enter the pipe interior, that no other oil than lubricating oils used in the installed air-water heat pump is used,

and that refrigerant does not leak. When using lubricating oils in the piping processing, use such lubricating oils

whose water content has been removed. When stored, be sure to seal the container with an airtight cap or any

other cover.

1. Flare processing procedures and precautions

a) Cutting the Pipe

By means of a pipe cutter, slowly cut the pipe so that it is not deformed.

b) Removing Burrs and Chips

If the flared section has chips or burrs, refrigerant leakage may occur.

Carefully remove all burrs and clean the cut surface before installation.

c) Insertion of Flare Nut

– 9 –

ØD

d) Flare Processing

Make certain that a clamp bar and copper

pipe have been cleaned.

By means of the clamp bar, perform the flare

processing correctly.

Use either a flare tool for R410A or conven-

tional flare tool.

Flare processing dimensions differ according

to the type of flare tool. When using a con-

ventional flare tool, be sure to secure “dimen-

sion A” by using a gauge for size adjustment. Fig. 3-2-1 Flare processing dimensions

Table 3-2-3 Dimensions related to flare processing for R410A

Nominal

diameter

1/4

3/8

1/2

5/8

Outer

diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

1.0

A (mm)

Flare tool for R410A

clutch type

0 to 0.5

Conventional flare tool

Clutch type Wing nut type

1.0 to 1.5 1.5 to 2.0

1.0 to 1.5 2.0 to 2.5

Table 3-2-4 Dimensions related to flare processing for R22

Nominal

diameter

1/4

3/8

1/2

5/8

Outer

diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

1.0

A (mm)

Flare tool for R22

clutch type

0 to 0.5

Conventional flare tool

Clutch type Wing nut type

0.5 to 1.0 1.0 to 1.5

0.5 to 1.0 1.5 to 2.0

Table 3-2-5 Flare and flare nut dimensions for R410A

Nominal

diameter

1/4

3/8

1/2

5/8

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

1.0

Dimension (mm)

ABCD

9.1 9.2 6.5 13

13.2 13.5 9.7 20

16.6 16.0 12.9 23

19.7 19.0 16.0 25

Flare nut width

(mm)

– 10 –

43˚ to 45˚

45˚ to 46˚

B A CD

Table 3-2-6 Flare and flare nut dimensions for R22

Nominal

diameter

1/4

3/8

1/2

5/8

3/4

Outer diameter

(mm)

6.35

9.52

12.70

15.88

19.05

Thickness

(mm)

0.8

1.0

Dimension (mm)

ABCD

9.0 9.2 6.5 13

13.0 13.5 9.7 20

16.2 16.0 12.9 20

19.7 19.0 16.0 23

23.3 24.0 19.2 34

Flare nut width

(mm)

Fig. 3-2-2 Relations between flare nut and flare seal surface

2. Flare Connecting Procedures and Precautions

a) Make sure that the flare and union portions do not have any scar or dust, etc.

b) Correctly align the processed flare surface with the union axis.

c) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is

the same as that for conventional R22. Incidentally, when the torque is weak, the gas leakage may occur.

When it is strong, the flare nut may crack and may be made non-removable. When choosing the tighten-

ing torque, comply with values designated by manufacturers. Table 3-2-7 shows reference values.

NOTE :

When applying oil to the flare surface, be sure to use oil designated by the manufacturer.

If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.

Table 3-2-7 Tightening torque of flare for R410A [Reference values]

Nominal

diameter

1/4

3/8

1/2

5/8

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Tightening torque

N•m (kgf•cm)

14 to 18 (140 to 180)

33 to 42 (330 to 420)

50 to 62 (500 to 620)

63 to 77 (630 to 770)

Tightening torque of torque

wrenches available on the market

N•m (kgf•cm)

16 (160), 18 (180)

42 (420)

55 (550)

65 (650)

– 11 –

3-3. Tools

3-3-1. Required Tools

The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A is

changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing

dimensions and opposite side dimension of flare nut (For Ø12.7 copper pipe) of the refrigerant piping are

lengthened.

The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge,

clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.

1. Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))

2. Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)

3. Tools commonly used for R410A and for conventional refrigerant (R22)

The table below shows the tools exclusive for R410A and their interchangeability.

Tools exclusive for R410A (The following tools for R410A are required.)

Tools whose specifications are changed for R410A and their interchangeability

No.

Used tool

Flare tool

Copper pipe gauge for

adjusting projection

margin

Torque wrench

(For Ø12.7)

Gauge manifold

Charge hose

Vacuum pump adapter

Electronic balance for

refrigerant charging

Refrigerant cylinder

Leakage detector

Charging cylinder

Usage

Pipe flaring

Flaring by

conventional flare tool

Connection of flare nut

Evacuating, refrigerant

charge, run check, etc.

Vacuum evacuating

Refrigerant charge

Gas leakage check

Refrigerant charge

R410A

air-water heat pump installation

Existence of

new equipment

for R410A

Ye s

(Note 2)

Whether conven-

tional equipment

can be used

*(Note 1)

Conventional air-water

heat pump installation

Whether new equipment

can be used with

conventional refrigerant

*(Note 1)

(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection

margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.

(Note 2) Charging cylinder for R410A is being currently developed.

General tools (Conventional tools can be used.)

In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary

as the general tools.

1. Vacuum pump

Use vacuum pump by attaching

vacuum pump adapter.

2. Torque wrench (For Ø6.35, Ø9.52)

3. Pipe cutter

4. Reamer

5. Pipe bender

6. Level vial

7. Screwdriver (+, –)

8. Spanner or Monkey wrench

9. Hole core drill (Ø65)

10. Hexagon wrench

(Opposite side 4mm)

11. Tape measure

12. Metal saw

Also prepare the following equipments for other installation method and run check.

1. Clamp meter

2. Thermometer

3. Insulation resistance tester

4. Electroscope

– 12 –

Connect the charge hose to packed valve service

port at the outdoor unit’s gas side.

Recover the refrigerant, and check no refrigerant

remains in the equipment.

(For refrigerant charging, see the figure below.)

Connect the charge hose to the vacuum pump

adapter.

Open fully both packed valves at liquid and gas

sides.

Place the handle of the gauge manifold Low in the

fully opened position, and turn on the vacuum pump’s

power switch. Then, evacuating the refrigerant in the

cycle.

When the compound gauge’s pointer has indicated

–0.1 Mpa (–76 cmHg), place the handle Low in the

fully closed position, and turn off the vacuum pump’s

power switch.

Keep the status as it is for 1 to 2 minutes, and ensure

that the compound gauge’s pointer does not return.

Set the refrigerant cylinder to the electronic balance,

connect the connecting hose to the cylinder and the

connecting port of the electronic balance, and charge

liquid refrigerant.

(Water heat

exchanger unit) (Outdoor unit)

Opened

Refrigerant cylinder

(with siphon)

Check valve

Open/close

valve for charging

Electronic balance for refrigerant charging

Opened

Closed

Service port

3-4. Recharging of Refrigerant

When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the

following steps.

1. Never charge refrigerant exceeding the specified amount.

2. If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.

3. Do not carry out additional charging.

When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the

refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the

specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high

pressure, and may cause a rupture or personal injury.

Fig. 3-4-1 Configuration of refrigerant charging

– 13 –

Gauge manifold

[ Cylinder with siphon ] [ Cylinder without siphon ]

OUTDOOR unit Gauge manifold OUTDOOR unit

Refrigerant

cylinder

Electronic

balance

Refrigerant

cylinder

Electronic

balance

Siphon

1. Be sure to make setting so that liquid can be charged.

2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.

It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.

Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the

cylinder upside down if cylinder is not equipped with siphon.

R410A refrigerant is HFC mixed refrigerant.

Therefore, if it is charged with gas, the composi-

tion of the charged refrigerant changes and the

characteristics of the equipment varies.

3-5. Brazing of Pipes

3-5-1. Materials for Brazing

1. Silver brazing filler

Silver brazing filler is an alloy mainly composed

of silver and copper. It is used to join iron, copper

or copper alloy, and is relatively expensive though

it excels in solderability.

2. Phosphor bronze brazing filler

Phosphor bronze brazing filler is generally used

to join copper or copper alloy.

3. Low temperature brazing filler

Low temperature brazing filler is generally called

solder, and is an alloy of tin and lead. Since it is

weak in adhesive strength, do not use it for

refrigerant pipes.

1. Phosphor bronze brazing filler tends to react

with sulfur and produce a fragile compound

water solution, which may cause a gas

leakage. Therefore, use any other type of

brazing filler at a hot spring resort, etc., and

coat the surface with a paint.

2. When performing brazing again at time of

servicing, use the same type of brazing filler.

3-5-2. Flux

1. Reason why flux is necessary

•By removing the oxide film and any foreign

matter on the metal surface, it assists the flow

of brazing filler.

•In the brazing process, it prevents the metal

surface from being oxidized.

•By reducing the brazing filler’s surface tension,

the brazing filler adheres better to the treated

metal.

Fig. 3-4-2

– 14 –

Nitrogen gas

cylinder

Pipe

Flow meter

Stop valve

From Nitrogen cylinder

Nitrogen

gas

Rubber plug

2. Characteristics required for flux

•Activated temperature of flux coincides with the

brazing temperature.

•Due to a wide effective temperature range, flux

is hard to carbonize.

•It is easy to remove slag after brazing.

•The corrosive action to the treated metal and

brazing filler is minimum.

•It excels in coating performance and is harm-

less to the human body.

As the flux works in a complicated manner as

described above, it is necessary to select an

adequate type of flux according to the type and

shape of treated metal, type of brazing filler and

brazing method, etc.

3. Types of flux

•Noncorrosive flux

Generally, it is a compound of borax and boric

acid.

It is effective in case where the brazing tem-

perature is higher than 800°C.

•Activated flux

Most of fluxes generally used for silver brazing

are this type.

It features an increased oxide film removing

capability due to the addition of compounds

such as potassium fluoride, potassium chloride

and sodium fluoride to the borax-boric acid

compound.

4. Piping materials for brazing and used

brazing filler/flux

1. Do not enter flux into the refrigeration cycle.

2. When chlorine contained in the flux remains

within the pipe, the lubricating oil deteriorates.

Therefore, use a flux which does not contain

chlorine.

3. When adding water to the flux, use water

which does not contain chlorine (e.g. distilled

water or ion-exchange water).

4. Remove the flux after brazing.

3-5-3. Brazing

As brazing work requires sophisticated techniques,

experiences based upon a theoretical knowledge, it

must be performed by a person qualified.

In order to prevent the oxide film from occurring in

the pipe interior during brazing, it is effective to

proceed with brazing while letting dry Nitrogen gas

(N2) flow.

Never use gas other than Nitrogen gas.

1. Brazing method to prevent oxidation

1) Attach a reducing valve and a flow-meter to

the Nitrogen gas cylinder.

2) Use a copper pipe to direct the piping mate-

rial, and attach a flow-meter to the cylinder.

3) Apply a seal onto the clearance between the

piping material and inserted copper pipe for

Nitrogen in order to prevent backflow of the

Nitrogen gas.

4) When the Nitrogen gas is flowing, be sure to

keep the piping end open.

5) Adjust the flow rate of Nitrogen gas so that it

is lower than 0.05 m3/Hr or 0.02 MPa

(0.2kgf/cm2) by means of the reducing valve.

6) After performing the steps above, keep the

Nitrogen gas flowing until the pipe cools down

to a certain extent (temperature at which

pipes are touchable with hands).

7) Remove the flux completely after brazing.

Fig. 3-5-1 Prevention of oxidation during brazing

Piping material

Copper - Copper

Copper - Iron

Iron - Iron

Used brazing filler

Phosphor copper

Silver

Used flux

Do not use

Paste flux

Vapor flux

– 15 –

4. CONSTRUCTION VIEWS

4-1. Indoor Unit

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

Parts name of remote controller WH-H03JE

Connecting pipe

(Outside length:0.4m)

Flare Ø9.52

(RAS-B16GKVP-E : Ø12.7)

Minimum

distance

to ceilinfg

Minimum

distance

to wall

Minimum

distance

to wall

Hanging

section

Front panel

Plasma pure filter

790

790 215

250

60 54.5

6054.5

1010

790

9130430491

674

450

288

290 19

125.5

163

250

167.5

47 or more

74 or more

140 or more

Knockout system Knockout system

Zeolite-plus filter Air ionizer

Installation plate hanging section

Remote controller holder

Wireless remote controller

Stud bolt hole

for Ø6

Stud bolt hole

for Ø8 to Ø10

Outline of

installation plate

Lower part

hanging section

Center line of

installation plate

Center line

of main unit

Drain hose

(Outside length:0.54m)

Installation plate

hanging section

Connecting pipe

(Outside length:0.45m)

Flare Ø6.35

Air filter

Indoor heat exchanger

– 16 –

4-2. Outdoor Unit

RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

Pipe dia. Ø9.52:RAS-10GAVP-E, RAS-13GAVP-E

Ø12.7:RAS-16GAVP-E

2-Ø20x88 drain long hole

leg part Ø25 drain hole Ø11-14U-shape hole

(for Ø8-Ø10 anchor bolt)

Connecting pipe port

(Pipe dia. Ø6.35)

8-Ø7 hole

(for fixing outdoor unit)

Ø11x14 long hole

(for Ø8-Ø10 anchor bolt)

Packed valve cover

Charging port

Outside line

of product

Outside line

of product

Outside line

of product

4-Ø4.5 embossment

Fin guard

Fan guard

Mounting dimensions of anchor bolt

When installing the outdoor unit,

leave open in at least two of

directions (A), (B), (C) and (D)

shown in the figure below.

leg part

320

306

290

145.5

(Anchor bort

long hole pitch)

Ø7 hole pitch

108

600 90

125

( )

69.5 147

31 143

342

483 257

108

137

320

145

157 79

218

780

50032

600

449

483 6

550

600

320 320

R5.5

R15

2-Ø7 hole

R15

Detailed leg part

view

250 or more

Minimum distance

from wall

2-Ø11x14 long hole

(for Ø8-Ø10 anchor bolt)

2-Ø11x14U- Shape hole

(for Ø8-Ø10 anchor bolt)

Intake

Outlet

50 or more

200 or more

100 or more

– 17 –

5. WIRING DIAGRAM

5-1. Outdoor Unit

RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

5-2. Indoor Unit

RAS-B10GKVP-E, RAS-B13GKVP-E, RAS-B16GKVP-E

MAIN P.C. BOARD

(MCC-5020)

HEAT EXCHANGER

SENSOR (TC)

CN07

(WHI)

CN13

(WHI)

CN100

(WHI)

CN08 (WHI)

MCC-899

Wireless Unit Assembly

POWER SUPPLY

CIRCUIT

21 43

BLK

BLU

BLK

BLU

10 10

CN01

(BLU)

CN10

(WHI)

THERMO SENSOR

(TA)

BLK

CN03

(WHI)

WHI

LOUVER MOTOR

FAN MOTOR

INDOOR

TERMINAL

BLOCK

DC MOTOR

WHI

YEL

FUSE

F01

RED

BLK

WHI

YEL

66BLU

DC5V

DC12V

DB01

CN21

CN23

CN34

CN22

AC 250V

BLK WHI

3 1

RED GRN & YEL

T3.15A

Heat

exchanger

Micro SW

BRW

BLU

(RED)

LINE

FILTER

TNR

CN33

(WHI)

BLK

1 2 3 4

RED

BRW

Ion electrode

High-voltage

Power supply

Air purifier

Electrode

Color

Identification

RED

WHI

BLK

BLU

BRW

ORN

PUR

YEL

GRY

PNK

GRN&

YEL

RED

WHITE

BLACK

BLUE

BROWN

ORANGE

PURPUL

YELLOW

GRAY

PINK

GREEN&

YELLOW

220-240V ~50Hz

220V ~60Hz

– 18 –

6. SPECIFICATIONS OF ELECTRICAL PARTS

6-1. Indoor Unit

RAS-B10GKVP-E, RAS-B13GKVP-E, RAS-B16GKVP-E

6-2. Outdoor Unit

RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

No.

Parts name

Fan motor (for indoor)

Room temp. sensor (TA-sensor)

Heat exchanger temp. sensor (TC-sensor)

Louver motor

Type

MF-280-30-5R

( – )

MP24Z

Specifications

DC280–340V, 30W

10kΩ at 25°C

Output (Rated) 1W, 16 poles, DC12V

No.

Parts name

Reactor

Outside fan motor

Suction temp. sensor (TS sensor)

Discharge temp. sensor (TD sensor)

Outside air temp. sensor (TO sensor)

Heat exchanger temp. sensor (TE sensor)

Terminal block (6P)

Compressor

Coil for P.M.V.

Coil for 4-way valve

Model name

CH-57

ICF-140-43-4R

(Inverter attached)

——

DA111A1F-20F1

CAM-MD12TF

VHV

Rating

L = 10mH, 16A × 2

DC140V, 43W

10kΩ (25°C)

62kΩ (20°C)

10kΩ (25°C)

20A, AC250V

3-phases 4-poles 750W

DC12V

AC220–240V

– 19 –

7. REFRIGERANT CYCLE DIAGRAM

7-1. Refrigerant Cycle Diagram

RAS-B10GKVP-E/RAS-10GAVP-E

NOTE :

•The maximum pipe length of this air conditioner is 25 m. When the pipe length exceeds 15m, the additional

charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 200g)

Deoxidized copper pipe

Outer dia. : 9.52mm

Thickness : 0.8mm

NOTE : Gas leak check position

Refrigerant flow (Cooling)

Refrigerant flow (Heating)

INDOOR UNIT

Temp. measurement

Indoor heat

exchanger

Cross flow fan

Deoxidized copper pipe

Outer dia. : 6.35mm

Thickness : 0.8mm

Sectional shape

of heat insulator

Allowable height

difference : 10m

Allowable pipe length

Pressure measurement

Gauge attaching port

Vacuum pump connecting port

Strainer

Pulse motor

valve at liquid side

(CAM-B22YGTF-3)

4-way valve

(STF-0108Z)

Compressor

DA111A1F-20F1

Outdoor heat

exchanger

Temp. measurement

Propeller fan Refrigerant amount : 0.82kg

OUTDOOR UNIT

Muffler

Max. : 25m

Min. : 2m

Chargeless : 15m

Charge : 20g/m

(16 to 25m)

Strainer

– 20 –

RAS-B13GKVP-E/RAS-13GAVP-E, RAS-B16GKVP-E/RAS-16GAVP-E

NOTE :

•The maximum pipe length of this air conditioner is 25 m. When the pipe length exceeds 15m, the additional

charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 200g)

Max. : 25m

Min. : 2m

Chargeless : 15m

Charge : 20g/m

(16 to 25m)

Deoxidized copper pipe

Outer dia. : 9.52mm(13),

12.7mm(16)

Thickness : 0.8mm

NOTE : Gas leak check position

Refrigerant flow (Cooling)

Refrigerant flow (Heating)

INDOOR UNIT T1

Temp. measurement

Indoor heat

exchanger

Cross flow fan

Deoxidized copper pipe

Outer dia. : 6.35mm

Thickness : 0.8mm

Sectional shape

of heat insulator

Allowable height

difference : 10m

Allowable pipe length

Pressure measurement

Gauge attaching port

Vacuum pump connecting port

Strainer

Pulse motor

valve at liquid side

(CAM-B22YGTF-3)

Ø1.2 x 80

4-way valve

(STF-0108Z)

Compressor

DA111A1F-20F1

Outdoor heat

exchanger Split capillary

Temp. measurement

Propeller fan Refrigerant amount : 0.96kg

OUTDOOR UNIT

Muffler

– 21 –

7-2. Operation Data

Temperature

condition (°C)

Indoor Outdoor

27/19 35/–

Model name

RAS-

B10GKVP-E

B13GKVP-E

B16GKVP-E

Standard

pressure

P (MPa)

0.9 to 1.1

0.8 to 1.0

0.7 to 0.9

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

13 to 15 42 to 44

11 to 14 42 to 45

8 to 11 43 to 47

Indoor

fan mode

High

Outdoor

fan mode

High

Compressor

revolution

(rps)

Temperature

condition (°C)

Indoor Outdoor

20/–7/6

Model name

RAS-

B10GKVP-E

B13GKVP-E

B16GKVP-E

Standard

pressure

P (MPa)

2.2 to 2.4

2.5 to 2.7

2.8 to 3.0

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

37 to 39 0 to 3

42 to 45 0 to 2

48 to 49 0 to 2

Indoor

fan mode

High

Outdoor

fan mode

High

Compressor

revolution

(rps)

NOTES :

1. Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent.

(Thermistor themometer)

2. Connecting piping condition : 7.5 m

– 22 –

8. CONTROL BLOCK DIAGRAM

8-1. Indoor Unit

RAS-B10GKVP-E, RAS-B13GKVP-E, RAS-B16GKVP-E

M.C.U. Indoor Unit Control Unit

From Outdoor Unit

220-240V ~50Hz

220V ~60Hz

Serial Signal Communication

(Operation Command and Information)

Serial Signal Transmitter/Receiver

Micro Switch

Converter

(D.C circuit)

Noise Filter

Indoor

Fan Motor

Air purifier

unit

Louver

Motor

Louver Motor

Drive Control

Indoor Fan

Motor Control

Initializing Circuit

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Infrared Rays, 36.7kHz

Remote Controller

Operation (START/STOP)

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

Hi-POWER

SLEEP

Operation Mode Selection

AUTO, COOL, DRY, HEAT

REMOTE CONTROLLER

ECO

Air Purifier

Heat Exchanger Sensor (Tc)

Room Temperature Sensor (Ta)

Infrared Rays Signal Receiver

and Indication

Functions

•Cold draft preventing Function

•3-minute Delay at Restart for Compressor

•Fan Motor Starting Control

•Processing

(Temperature Processing)

•Timer

•Serial Signal Communication

•Clean Function

– 23 –

8-2. Outdoor Unit (Inverter Assembly)

RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

220–240 V ~50Hz

220 V ~60Hz

MICRO-COMPUTER BLOCK DIAGRAM

Driver circuit

of P.M.V.

Heat exchanger

temp.sensor

Suction temp.

sensor

Outdoor air

temp. sensor

Discharge

temp. sensor

Indoor unit

send/receive

circuit

Relay

circuit

Noise

Filter Converter

(AC → DC)

Clock

frequency

4MHz

High Power

factor Correction

circuit

Input current

sensor

• PWM synthesis function

• Input current release control

• IGBT over-current detect control

• Outdoor fan control

• High power factor correction control

• Inverter output frequency control

• A/D converter function

• P.M.V. control

• Discharge temp. control

• 4-way valve control

• Signal communication to indoor unit

P.M.V. : Pulse Motor Valve

M.C.U. : Micro Control Unit

M.C.U

For INDOOR UNIT

4-way

valve

P.M.V.

Inverter

(DC → AC)

Gate drive

circuit

Gate drive

circuit

Inverter

(DC → AC)

Outdoor

Fan motor

Compressor

MCC5009 (P.C.B) OUTDOOR UNIT

Current

detect

Current

detect

– 24 –







9. OPERATION DESCRIPTION

9-1. Outline of Air Conditioner Control

This air conditioner is a capacity-variable type air

conditioner, which uses DC motor for the indoor fan

motor and the outdoor fan motor. And the capacity-

proportional control compressor which can change the

motor speed in the range from 13 to 115 rps is

mounted. The DC motor drive circuit is mounted to the

indoor unit. The compressor and the inverter to control

fan motor are mounted to the outdoor unit.

The entire air conditioner is mainly controlled by the

indoor unit controller.

The indoor unit controller drives the indoor fan motor

based upon command sent from the remote controller,

and transfers the operation command to the outdoor

unit controller.

The outdoor unit controller receives operation com-

mand from the indoor unit side, and controls the

outdoor fan and the pulse motor valve. (P.M.V)

Besides, detecting revolution position of the compres-

sor motor, the outdoor unit controller controls speed of

the compressor motor by controlling output voltage of

the inverter and switching timing of the supply power

(current transfer timing) so that motors drive according

to the operation command.

And then, the outdoor unit controller transfers reversely

the operating status information of the outdoor unit to

control the indoor unit controller.

As the compressor adopts four-pole brushless

DC motor, the frequency of the supply power

from inverter to compressor is two-times cycles

of the actual number of revolution.

1. Role of indoor unit controller

The indoor unit controller judges the operation

commands from the remote controller and assumes

the following functions.

•Judgment of suction air temperature of the indoor

heat exchanger by using the indoor temp. sensor.

(TA sensor)

•Judgment of the indoor heat exchanger tempera-

ture by using heat exchanger sensor (TC sensor)

(Prevent-freezing control, etc.)

•Louver motor control

•Indoor fan motor operation control

•LED (Light Emitting Diode) display control

•Transferring of operation command signal (Serial

signal) to the outdoor unit

•Reception of information of operation status

(Serial signal including outside temp. data) to the

outdoor unit and judgment/display of error

•Air purifier operation control

2. Role of outdoor unit controller

Receiving the operation command signal (Serial

signal) from the indoor unit controller, the outdoor

unit performs its role.

•Compressor operation control

•Operation control of outdoor fan motor

•P.M.V. control

•4-way valve control

Operations followed to judgment

of serial signal from indoor side.

•Detection of inverter input current and current

release operation

•Over-current detection and prevention operation

to IGBT module (Compressor stop function)

•Compressor and outdoor fan stop function when

serial signal is off (when the serial signal does not

reach the board assembly of outdoor control by

trouble of the signal system)

•Transferring of operation information (Serial

signal) from outdoor unit controller to indoor unit

controller

•Detection of outdoor temperature and operation

revolution control

•Defrost control in heating operation (Temp.

measurement by outdoor heat exchanger and

control for 4-way valve and outdoor fan)

3. Contents of operation command signal

(Serial signal) from indoor unit controller to

outdoor unit controller

The following three types of signals are sent from

the indoor unit controller.

•Operation mode set on the remote controller

•Compressor revolution command signal defined

by indoor temperature and set temperature

(Correction along with variation of room tempera-

ture and correction of indoor heat exchanger

temperature are added.)

•Temperature of indoor heat exchanger

•For these signals ([Operation mode] and [Com-

pressor revolution] indoor heat exchanger tem-

perature), the outdoor unit controller monitors the

input current to the inverter, and performs the

followed operation within the range that current

does not exceed the allowable value.

4. Contents of operation command signal

(Serial signal) from outdoor unit controller

to indoor unit controller

The following signals are sent from the outdoor unit

controller.

•The current operation mode

•The current compressor revolution

•Outdoor temperature

•Existence of protective circuit operation

For transferring of these signals, the indoor unit

controller monitors the contents of signals, and

judges existence of trouble occurrence.

Contents of judgment are described below.

•Whether distinction of the current operation

status meets to the operation command signal

•Whether protective circuit operates

When no signal is received from the outdoor

unit controller, it is assumed as a trouble.

– 25 –

9-2. Operation Description

9-2. 1. Basic operation ........................................................................................................... 26

1. Operation control ................................................................................................... 26

2. Cooling/Heating operation ..................................................................................... 27

3. AUTO operation ..................................................................................................... 27

4. DRY operation ........................................................................................................ 27

2. Indoor fan motor control ............................................................................................. 28

3. Outdoor fan motor control........................................................................................... 30

4. Capacity control .......................................................................................................... 31

5. Current release control ............................................................................................... 31

6. Release protective control by temperature of indoor heat exchanger........................ 32

7. Quick heating control .................................................................................................. 33

8. Defrost control (Only in heating operation) ................................................................ 33

9. Louver control ............................................................................................................. 34

1) Louver position ....................................................................................................... 34

2) Air direction adjustment ......................................................................................... 34

3) Swing ..................................................................................................................... 34

10. ECO operation ............................................................................................................ 35

11. Temporary operation................................................................................................... 36

12. Air purifying control [Detection of abnormality] .......................................................... 37

13. Discharge temperature control ................................................................................... 37

14. Pulse motor valve (P.M.V.) control .............................................................................. 38

15. Clean operation .......................................................................................................... 39

16. Clean operation release ............................................................................................ 40

17. Select switch on remote controller ............................................................................. 41

9-3. Auto Restart Function.............................................................................................42

9-3-1. How to Set the Auto Restart Function.................................................................... 42

9-3-2. How to Cancel the Auto Restart Function ............................................................. 43

9-3-3. Power Failure During Timer Operation ................................................................... 43

9-4. FILTER Indicator ...................................................................................................... 43

9-4-1. How to Turn Off FILTER Indicator............................................................................ 43

9-5. Remote Controller and Its Fuctions ...................................................................... 44

9-5-1. Parts Name of Remote Controller ........................................................................... 44

9-5-2. Name and Functions of Indications on Remote Controller ................................. 45

9-6. Hi-POWER Mode

([Hi-POWER] button on the remote controller is pressed) ..................................46

– 26 –

Item

1. Basic

operation

Operation flow and applicable data, etc.

1. Operation control

Description

Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are

controlled.

1) The operation conditions are selected by the remote controller as shown in the below.

2) A signal is sent by ON button of the remote controller.

3) The signal is received by a sensor of the indoor unit and processed by the indoor controllers as

shown in the below.

4) The indoor controller controls the indoor fan motor and louver motor.

5) The indoor controller sends the operation command to the outdoor controller, and sends/receives

the control status with a serial signal.

6) The outdoor controller controls the operation as shown in the left, and also controls the compres-

sor, outdoor fan motor, 4-way valve and pulse motor valve.

Remote controller

Indoor unit

Control contents of remote controller

• ON/OFF (Air conditioner/Air purifier)

• Operation select (COOL/HEAT/AUTO/DRY)

• Temperature setup

• Air direction

• Swing

• Air volume select (AUTO/LOW/LOW+/MED/MED+/HIGH)

• ECO

• ON timer setup

• OFF timer setup

• High power

Indoor unit control

• Command signal generating function of

indoor unit operation

• Calculation function (temperature calculation)

• Activation compensation function of indoor fan

• Cold draft preventive function

• Timer function

• Indoor heat exchanger release control

• Indoor fan motor

• Louver motor

Outdoor unit

Outdoor unit control

• Frequency control of inverter output

• Waveform composite function

• Calculation function

(Temperature calculation)

• AD conversion function

• Quick heating function

• Delay function of compressor reactivation

• Current release function

• GTr over-current preventive function

• Defrost operation function

• Compressor

• Outdoor fan motor

• 4-way valve

• Pulse motor valve

(P.M.V.)

Signal receiving

Indoor unit control

Operation command

Serial signal send/receive

Selection of

operation conditions

ON/OFF

Serial signal send/receive

Outdoor unit control

Inverter

– 27 –

Operation ON Setup of remote controller

Indoor fan motor control / Louver control

Indoor unit control

Sending of operation command signal

Outdoor unit control

[ ]

Compressor revolution control / Outdoor fan motor control /

4-way valve control In cooling operation: ON

In heating operation: OFF

Pulse motor valve control

Item

1. Basic

operation

Operation flow and applicable data, etc.

2. Cooling/Heating operation

Description

The operations are performed in the following parts by controls according to cooling/heating conditions.

1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signal

starts being transferred form the indoor controller to the outdoor unit.

2) At the indoor unit side, the indoor fan is operated according to the contents of “2. Indoor fan

motor control” and the louver according to the contents of “9. Louver control”, respectively.

3) The outdoor unit controls the outdoor fan motor, compressor, pulse motor valve and

4-way valve according to the operation signal sent from the indoor unit.

*1. The power coupler of 4-way valve is usually turned off, and it is turned on during defrost

operation. (Only in heating)

3. AUTO operation

Selection of operation mode

As shown in the following figure, the operation starts by

selecting automatically the status of room temperature

(Ta) when starting AUTO operation.

*1. When reselecting the operation mode, the fan

speed is controlled by the previous operation mode.

4. DRY operation

DRY operation is performed according to the difference

between room temperature and the setup temperature as

shown below.

In DRY operation, fan speed is controlled in order to

prevent lowering of the room temperature and to avoid air

flow from blowing directly to persons.

1) Detects the room temperature (Ta) when

the DRY operation started.

2) Starts operation under conditions in the

left figure according to the temperature

difference between the room tempera-

ture and the setup temperature (Tsc).

Setup temperature (Tsc)

= Set temperature on remote controller

(Ts) + (0.0 to 1.0)

3) When the room temperature is lower

1°C or less than the setup temperature,

turn off the compressor.

1) Detects the room temperature (Ta) when

the operation started.

2) Selects an operation mode from Ta in

the left figure.

3) Fan operation continues until an

operation mode is selected.

4) When AUTO operation has started

within 2 hours after heating operation

stopped and if the room temperature is

20°C or more, the fan operation is

performed with ”Super Ultra LOW” mode

for 3 minutes.

Then, select an operation mode.

5) If the status of compressor-OFF

continues for 15 minutes the room

temperature after selecting an operation

mode (COOL/HEAT), reselect an

operation mode.

Ts + 1

Ts – 1

Cooling operation

Monitoring (Fan)

Heating operation

Tsc

+0.5

+1.0

[˚C]

Fan speed

L– (W5)

(W5+W3) / 2

SL (W3)

– 28 –

Item

2. Indoor fan

motor control

Operation flow and applicable data, etc.

(This operation controls the fan speed at indoor unit side.)

The indoor fan (cross flow fan) is operated by the phase-

control induction motor. The fan rotates in 5 stages in

MANUAL mode, and in 5 stages in AUTO mode, respec-

tively. (Table 1)

Description

* Symbols

UH : Ultra High

H : High

M+ : Medium+

M : Medium

L+ : Low+

L: Low

L- : Low–

UL : Ultra Low

SUL : Super Ultra Low

* The fan speed broadly varies due

to position of the louver, etc.

The described value indicates one

under condition of inclining

downward blowing.

1) When setting the fan speed to L,

L+, M, M+ or H on the remote

controller, the operation is

performed with the constant

speed shown in Fig. 1.

2) When setting the fan speed to

AUTO on the remote controller,

revolution of the fan motor is

controlled to the fan speed level

shown in Fig. 2 and Table 1

according to the setup tempera-

ture, room temperature, and heat

exchanger temperature.

(Fig. 1)

(Fig. 2)

(Table 1) Indoor fan air flow rate

Fan speed

level

COOL

M+

L+

L–

SUL

HEAT

M+

L+

L–

SUL

DRY

L+

L–

SUL

RAS-B10GKVP-E

Fan speed Air flow rate

(rpm) (m3/h)

1630 684

1480 609

1400 569

1350 544

1200 468

1110 423

980 358

910 323

900 318

890 313

880 308

730 232

580 157

430 82

400 67

RAS-B13GKVP-E

Fan speed Air flow rate

(rpm) (m3/h)

1650 694

1530 634

1440 589

1390 564

1240 488

1150 443

1010 373

910 323

900 318

890 313

880 308

730 232

580 157

430 82

400 67

RAS-B16GKVP-E

Fan speed Air flow rate

(rpm) (m3/h)

1650 694

1580 659

1550 644

1530 634

1380 559

1230 483

1080 408

970 353

960 348

950 343

940 338

790 263

640 187

490 112

400 67

+2.5

[˚C]

+2.0

+1.5

+1.0

+0.5

Tsc

M+(WB)

L(W6)

Air volume AUTO

L+

M+

(L + M) / 2

(M + H) / 2

Indication Fan speed

Fan speed setup

COOL ON

AUTO

MANUAL

*3 : Fan speed = (M + –L) x 3/4 + L

*4 : Fan speed = (M + –L) x 2/4 + L

*5 : Fan speed = (M + –L) x 1/4 + L

(Linear approximation

from M+ and L)

– 29 –

Item

2. Indoor fan

motor control

Operation flow and applicable data, etc.

Description

1) When setting the fan speed to L,

L+, M, M+ or H on the remote

controller, the operation is per-

formed with the constant speed

shown in Fig. 3 and Table 1.

2) When setting the fan speed to

AUTO on the remote controller,

revolution of the fan motor is

controlled to the fan speed level

shown in Fig. 5 according to the set

temperature and room temperature.

3) Min air flow rate is controlled by

temperature of the indoor heat

exchanger (Tc) as shown in Fig. 4.

4) Cold draft prevention, the fan

speed is controlled by temperature

of the indoor heat exchanger (Tc)

as shown in Fig. 6.

[In starting and in stability]

(Fig. 3)

(Fig. 4)

(Fig. 5)

Cold draft preventive control

(Fig. 6)

Fan spee

Basi

fan

ntr

* No limitation while fan speed MANUAL mode is in stabilit

* A: Wh

n T

≥

A is 24

and when Tsc < 24

A is Ts

Tsc: Set valu

[

]

–

–1.0 d

–1.5 e

–2.0 f

–2.5 g

–5.0

–

(

)

M+ (WD)

(

)

(

)

Line-approximate

H and S

L with Tc

SUL

(

)

Stop

46 46

45 45 33

33 33 21

32 32 20

*A+4 *A+4 *A+4

*A-4 *A-4 *A-4

Fan speed MAN

AL in startin

Fan speed AUTO in stabilit

Fan speed AUTO in startin

L+

M+

(L + M) / 2

(M + H) / 2

Indication Fan speed

Fan speed setup

HEAT

AUTO

YES

MANUAL

TC ≥ 42˚CMin air flow rat

ontro

Limited to Min WD tap

*Fan spee

(

–

)

+ W

limi

4+L

–

FAN AUTO

FAN Manual

In starting

•Until 12 minutes passed after operation start

•When 12 to 25 minutes passed after operation

start and room temp. is 3°C or lower than set temp.

•Room temp. < Set temp. –4°C

In stability

•When 12 to 25 minutes passed after operation start

and room temp. is higher than (set temp. –3°C)

•When 25 minutes or more passed after operation start

•Room temp. ≥ Set temp. –3.5°C

– 30 –

Item

3. Outdoor fan

motor control

Operation flow and applicable data, etc.

The blowing air volume at the outdoor unit side is controlled.

Receiving the operation command from the controller of

indoor unit, the controller of outdoor unit controls fan speed.

* For the fan motor, a DC motor with non-stage variable

speed system is used. However, it is limited to 8 stages for

reasons of controlling.

Description

1) The operation command sent

from the remote controller is

processed by the indoor unit

controller and transferred to the

controller of the outdoor unit.

2) When strong wind blows at

outdoor side, the operation of air

conditioner continues with the

fan motor stopped.

3) Whether the fan is locked or not

is detected, and the operation of

air conditioner stops and an

alarm is displayed if the fan is

locked.

4) According to each operation

mode, by the conditions of

outdoor temperature (To) and

compressor revolution, the speed

of the outdoor fan shown in the

table is selected.

Outdoor fan speed (rpm)

Tap

f 1

f 2

f 3

f 4

f 5

f 6

f 7

f 8

10GAVP-E 13GAVP-E 16GAVP-E

200 200 200

300 300 300

390 390 390

450 450 450

500 500 500

600 600 600

Tap

f 9

f A

f B

f C

f D

f E

f F

10GAVP-E 13GAVP-E 16GAVP-E

700 700 700

750 840 920

2) Fan speed ≥ 400

when the motor stopped.

Air conditioner ON

(Remote controller)

YES

Indoor unit controller

Fan motor ON

3) Fan lock

OFF status of

fan motor continues.

4) Motor operates as shown in the table below.

1) Outdoor unit

operation command

(Outdoor fan control)

Air conditioner

OFF Alarm

display

Compressor speed (rps)

To > 38°C

To > 28°C

To To > 15°C

To > 5.5°C

To > 0°C

During To > 38°C

ECO mode To < 38°C

When To is abnormal

~ 13.8 ~ 31.7

32.3 ~ MAX

MIN MAX MIN MAX MIN MAX

f 2f 3f Cf Df Ef F

f 2 f 3 f B f C f E f F

f 2 f 3 f 8 f 9 f A f B

f 2 f 3 f 6 f 7 f 8 f 9

f 1 f 2 f 4 f 5 f 6 f 7

f 2 f 3f Bf Cf Cf D

f 2 f 3 f 2 f 3 f B f C

f Df Ff Df Ff Df F

In cooling operation

Compressor speed (rps)

To > 15°C

To To < 15°C

To < 5.5°C

To < –5.0°C

To > 15°C

During To < 15°C

ECO mode To < 5.5°C

To < –5.5°C

When To is abnormal

~16.8 ~47.9

48.5 ~ MAX

f 3 f 8 f 9

f 3 f 9 f A

f 8 f A f D

f B f C f D

f 3 f 3 f 6

f 3 f 3 f 8

f 5 f 9 f 9

f 7 f A f B

f A f B f D

In Heating operation

– 31 –

Item

4. Capacity

control

Operation flow and applicable data, etc.

The cooling or heating capacity depending on the load is

adjusted.

According to difference between the setup value of tempera-

ture and the room temperature, the capacity is adjusted by

the compressor revolution.

Description

1) The difference between set

temperature on remote controller

(Ts) and room temperature (Ta)

is calculated.

2) According to the temperature

difference, the correction value of

Hz signal which determines the

compressor speed is set up.

3) The rotating position and speed

of the motor are detected by the

electromotive force occurred on

the motor winding with operation

of the compressor.

4) According to the difference

resulted from comparison of the

correction value of Hz signal with

the present operation Hz, the

inverter output and the commuta-

tion timing are varied.

5) Change the compressor motor

speed by outputting power to the

compressor.

* The contents of control

operation are same in cooling

operation and heating

operation

This function prevents troubles on the electronic parts of the

compressor driving inverter.

This function also controls drive circuit of the compressor

speed so that electric power of the compressor drive circuit

does not exceed the specified value.

5. Current release

control

Set temp. (Ts) Room temp. (Ta)

Correction of Hz signal

Outdoor temp. To

Setup of current release point

Capacity control continues.

Outdoor temp.

45˚C

40˚C44˚C

6.45A

6.75A

8.47A

7.72A

9.22A

10.80A

16˚C39˚C

11˚C 15.5˚C

10.5˚C

Cooling current

release value Heating current

release value

Detection of electromotive force

of compressor motor winding

Detection of motor speed and rotor position

Inverter output change

Commutation timing change

Change of compressor speed

Remote controller Indoor unit

Ts –Ta

Current decrease

Correction value of Hz signal ≤ Operating Hz

Outdoor unit inverter main

circuit control current

High

Low

Reduce compressor speed

Operating current ≤

Setup value

1) The input current of the outdoor

unit is detected in the inverter

section of the outdoor unit.

2) According to the detected

outdoor temperature, the

specified value of the current is

selected.

3) Whether the current value

exceeds the specified value or

not is judged.

4) If the current value exceeds the

specified value, this function

reduces the compressor speed

and controls speed up to the

closest one commanded from the

indoor unit within the range

which does not exceed the

specified value.

– 32 –

Item

6. Release protective

control by tempera-

ture of indoor heat

exchanger

Operation flow and applicable data, etc.

(Prevent-freezing control for indoor heat exchanger)

In cooling/dry operation, the sensor of indoor heat

exchanger detects evaporation temperature and

controls the compressor speed so that temperature of

the heat exchanger does not exceed the specified

value.

Description

1) When temperature of the indoor

heat exchanger drops below 5°C,

the compressor speed is

reduced. (P zone)

2) When temperature of the indoor

heat exchanger rises in the

range from 6°C to under 7°C, the

compressor speed is kept.

(Q zone)

3) When temperature of the indoor

heat exchanger rises to 7°C or

higher, the capacity control

operation returns to the usual

control in cooling operation.

(R zone)

1) When temperature of the indoor

heat exchanger rises in the

range from 50°C to 55°C, the

compressor speed is kept.

(Q zone)

When temperature of the indoor

heat exchanger drops in the

range from 46°C to under 55°C,

the compressor speed is kept.

(Q zone)

2) When temperature of the indoor

heat exchanger rises to 55°C or

higher, the compressor speed is

reduced. (P zone)

3) When temperature of the indoor

heat exchanger does not rise to

50°C, or when it drops below to

46°C, the capacity control

operation returns to the usual

control in heating operation.

(R zone)

(Prevent-overpressure control for refrigerating cycle)

In heating operation, the sensor of indoor heat ex-

changer detects condensation temperature and controls

the compressor speed so that temperature of the heat

exchanger does not exceed the specified value.

7˚C

6˚C

5˚C

55˚C

50˚C

46˚C

Usual cooling capacity control

Reduction of compressor speed

Indoor heat exchanger temperature

When the value is

in Q zone, the

compressor speed

is kept.

Reduction of compressor speed

Usual heating capacity control

Indoor heat exchanger temperature

When the value is

in Q zone, the

compressor speed

is kept.

– 33 –

Item

7. Quick heating

control

Operation flow and applicable data, etc.

This function quickens the starting of heating opera-

tion when indoor/outdoor temperature is low.

(Available only in heating operation)

When indoor temperature is low, this function stores

the heat by heating winding depended on the outdoor

temperature and then it enables the hot air blowing

out quickly.

Description

When the following conditions are

satisfied, winding is heated by output

varied by the outdoor heat exchanger

temperature.

Condition 1 :

The previous operation was heating.

Condition 2 :

2 hours passed after operation stop.

Condition 3 :

The room temperature is 20°C or lower.

The indoor temperature sensor detects

the room temperature.

If the detected room temperature is 20°C

or lower, the outdoor heat exchanger

temperature sensor detects the outdoor

heat exchanger temperature. As shown in

the left figure, winding of the compressor

is heated for each division of the tempera-

ture ( for each outdoor temperature) and

the heat is stored.

8. Defrost control

(Only in heating

operation)

(This function removes frost adhered to the outdoor

heat exchanger.)

The temperature sensor of the outdoor heat ex-

changer (Te sensor) judges the frosting status of the

outdoor heat exchanger and the defrost operation is

performed with 4-way valve reverse defrost system.

The necessity of defrost operation is

detected by the outdoor heat exchanger

temperature. The conditions to detect the

necessity of defrost operation differ in A,

B, or C zone each. (Table 1)

•Defrost operation in A to C zones

1) Stop operation of the compressor for

20 seconds.

2) Invert (ON) 4-way valve 10 seconds

after stop of the compressor.

3) The outdoor fan stops at the same time

when the compressor stops.

4) When temperature of the indoor heat

exchanger becomes 38°C or lower,

stop the indoor fan.

•Returning conditions from defrost

operation to heating operation

1) Temperature of outdoor heat exchanger

rises to +8°C or higher.

2) Temperature of outdoor heat exchanger

is kept at +5°C or higher for 80 seconds.

3) Defrost operation continues for

15 minutes.

1) Stop operation of the compressor for

approx. 50 seconds.

2) Invert (OFF) 4-way valve approx. 40

seconds after stop of the compressor.

3) The outdoor fan starts rotating at the

same time when the compressor starts.

Table 1

* The minimum value of Te sensor 10 to 15 minutes

after start of operation is stored in memory as Te0.

20˚C

–1˚C

–3˚C

–6˚C

–8˚C

OFF

Heating output for winding

20W or equivalent

Winding is not heated.

Indoor temperature

Outdoor heat exchanger

temperature

The previous operation was heating and

2 hours passed after the operation had stopped.

In case of operation stop

YES

–5˚C

0’10’15’27’40”34’

–7˚C

–20˚C

Operation time

(Minute)

Start of heating operation

Outdoor heat exchanger temperature

C zone

A zone

B zone

A zone

B zone

C zone

When Te0 - TE ≥ 2.5 continued for 2 minutes in A zone,

defrost operation starts.

When the operation continued for 2 minutes in B zone,

defrost operation starts.

When Te0 - TE ≥ 3 continued for 2 minutes in C zone,

defrost operation starts.

– 34 –

Horizontal

blowing Inclined

blowing Blowing

downward

Air direction

Inclined

blowing Horizontal

blowing

Powerful

Room temp. (Ta) < Set temp. (Tsc) + 3.5 Room temp. (Ta) ≥ Set temp. (Tsc) + 3.5

Initial setting of “Cooling storage position”

Louver : Directs downward (9˚)Initial setting of “Cooling storage position”

Louver : Directs downward (9˚)“Inclined blowing”

Louver : Directs downward (14˚)

Heating operation/

AUTO (HEAT)

ECO operation

Room temp. (Ta) < Set temp. (Tsc) – 3

or 25 minutes after start of operation Room temp. (Ta) ≥ Set temp. (Tsc) – 3

Initial setting of “Heating storage position”

Louver : Directs downward (76˚)“Heating storage position”

Louver : Directs downward (76˚)“Cooling storage position”

Louver : Directs downward (9˚)

Cooling/AUTO

(COOL)/DRY operation Powerful

operation Cooling memory

position

Room temp. ≥ Set temp. +3.5

Cooling memory

position Inclined

blowing

Room temp. ≥

Set temp. +3.5

YES

Heating operation ECO

operation

Heating memory

position

Horizontal

position

Heating memory

position

Room temp. ≥

Set temp. –3.0

Room temp. ≥ Set temp. –3.0

YES

Louver angle Horizontal

(0˚)

Item

9. Louver control

1) Louver

position

Operation flow and applicable data, etc.

This function controls the air direction of the indoor unit.

Description

•Swing operation is performed in width 35° with the stop position as

the center.

•If the stop position exceeds either upper or lower limit position,

swing operation is performed in width 35° from the limit which the

stop position exceeded.

3) Swing

2) Louver position in heating operation

•Swing

When pressing

[SWING] button during

operation, the louver

starts swinging.

•The position is automatically controlled according to the operation mode (COOL/HEAT).

•The set louver position is stored in memory by the microcomputer, and the louver returns to the

stored position when the next operation is performed. (Cooling/heating memory position)

The angle of the louver is indicated as the horizontal angle is 0°.

When the louver closes fully, it directs approx. 49° upward.

1) Louver position in cooling operation

2) Air direction adjustment •The louver position can

be arbitrarily set up by

pressing [FIX] button.

– 35 –

Item

10. ECO

operation

Operation flow and applicable data, etc.

When pressing [ECO] button on the remote controller, a quiet

and mild operation is performed by reducing the fan speed and

the compressor speed.

This function operates the air conditioner with the difference

between the set and the room temperature as shown in the

following figure.

The time correction is performed for 8 minutes each.

(However, the first correction is performed 150 seconds after

start of the operation.)

Description

1) The room temperature (Tao) at

the start time of DRY operation is

detected.

2) According to difference between

the room temperature and the

set temperature (Tsc), the

operation starts with the condi-

tions shown in the left figure.

Set temp.

(Tsc) = Set temp. on remote

controller (Ts) + (0.0 to 1.0)

3) If the room temperature is down

by 2°C or more, turn off the

compressor.

1) The indoor fan speed is con-

trolled within (W7) as maximum

value.

2) Setting the compressor speed to

Max. 52Hz, the temperature zone

in which the operation can be

performed with Max. 16Hz is

gradually widened after 30

minutes passed when starting

ECO operation.

3) The louver position is set

horizontally (Standard cooling

position) when the room tem-

perature comes close to the set

temperature or when 25 minutes

passed after starting ECO

operation.

Time correction

+ 1

± 0

–1 zone: min 1

Fan

L+ (W7)

L (W6)

L– (W5)

UL (W4)

Frequency

DRY max

*12

*11

*10

COOL min

OFF

Zone

[˚C]

+4.0

+3.5

+3.0

+2.5

+2.0

+1.5

+1.0

+0.5

TSC

–0.5

–1.0

–2.0

* 12 (DRY max - COOL min) /6 x 5 + COOL min

* 11 (DRY max - COOL min) /6 x 4 + COOL min

* 10 (DRY max - COOL min) /6 x 3 + COOL min

* 9 (DRY max - COOL min) /6 x 2 + COOL min

* 8 (DRY max - COOL min) /6 x 1 + COOL min

30 minutes

→ Time Compressor

speed

0Hz

A zone

16Hz

B zone

16 to 52Hz

C zone

52Hz

–0.5

–1.0

–1.5

–2.0

–2.5

–3.0

–4.0

–5.0

–6.0

–7.0

–8.0

–9.0

–10.0

–11.0

(Room temp. – Set temp.)

– 36 –

Item

11. Temporary

operation

Operation flow and applicable data, etc.

Pressing [RESET] button starts the temporary opera-

tion of [AUTO] operation. When keeping [RESET]

button pressed for 10 seconds or more, the temporary

[COOL] operation is performed.

Description

1) When pressing [RESET] button, the

temporary [AUTO] operation starts.

2) When keeping [RESET] button pressed

for 3 seconds or more, Pi, Pi, Pi sound is

heard and [AUTO RESTART] control is

changed.

3) When keeping [RESET] button pressed

for 10 seconds or more, “Pi” sound is

heard and the temporary [COOL]

operation starts.

4) If the filter lamp goes on, press [RESET]

button to go off the filter lamp, and then

press [RESET] button again.

5) To stop the temporary operation, press

the button again.

12. Air

purifying

control

This function generates nagative ion while cleaning the air in the room.

If air purifier-ON signal is received while the air conditioner stops, the air purifier starts operation,

and if it is received while the air conditioner operates, the air conditioner and the air purifier start

operation.

The air ion generator operates linked with the air purifying operation.

* When the previous operation was the

operation of air conditioner + air purifier,

an operation of air conditioner + air purifier

starts by pushing AC button on the remote

controller.

(Operation of air conditioner + air purifier

is stored in memory.)

*1 Swing is available

*2 Fan speed is Fan Auto mode varies in

order, (M + 1) → (L) → (L–) → (SL).

Filter lamp ON Press RESET button.

Did you press [RESET] button

for 3 seconds or more?

Did you press [RESET] button

for 10 seconds or more?

Switch to [AUTO RESTART] control.

YES

Temporary [AUTO] operation

Temporary [COOL] Operation

Sending air purifier-ON

Operation lamp ON

Fan ON

Air purifier ON

Air purifying operation

Start of air purifier-ON

Operation lamp OFF Filter-OFF

Memory position

of louver/COOL Air conditioner +

air purifier operate Fan stop

Air purifier-OFF

Louver close

All stop

Air conditioner operates

Sending air purifier-OFF

1,23

1 2 3 4

Air conditioner operatesAir conditioner stops Air purifier operates Air conditioner +

Air purifier operate

Present status

Stop

Air purifier only

Air conditioner

Joint use of AC and air purifier

Operation button

PURE button Air conditioner

Air purifier AC operation*

Stop (All) AC + Air purifier

AC + Air purifier All stop

AC operation All stop

Air purifying operation

AC + Air purifying operation

Louver*1

Cooling position

Follows to AC operation

Fan speed *2

AUTO, L, L+, M, M+, H

Follows to AC operation

– 37 –

Item Operation flow and applicable data, etc. Description

1. Purpose

The air purifying control function is to

alert the user to trouble in the ionizing or

air purifying operation.

2. Description

Trouble is determined to have occurred

(indicated by the FILTER indicator) in the

following four cases.

1) When a count of 1000H has been

reached on the timer

2) When the panel switch has been set to

OFF by the opening of the air inlet

grile, etc.

3) When an abnormal discharge caused

by a symptom such as the build-up of

dirt has been detected while the air

purifier is ON

4) When the electric dust collector has

not been installed correctly

* Trouble case (2) or (3) is deemed to

have occurred when the action

concerned continues for more than

one second.

3. Operation

The sequence that FILTER indicator is

turned on are described in the left

flowchart.

1) When 1000H timer counts up, the

FILTER indicator keeps lighting even if

the operation is stopped by the remote

controller.

The timer is stored in memory of the

microcomputer, and the operation time

is cleared by filter RESET button on

the indoor unit or a power failure.

(FILTER indicator goes off.)

2) A trouble detected within 1 minute

after activation of the air is immedi-

ately judged as an error and the

FILTER indicator goes on.

3) In case that 1 minute passed after

activation of the purifier, the purifier is

turned off while the PURE indicator

keeps ON. After 10 minutes passed,

restart the purifier and an error is

judged again.

13. Discharge temperature control

1) Reset by RESET button.

2) Reset by RESET button or by the stop direction

from the remote controller.

* When the breaker is turned [ON] (In restart time

after power failure) or RESET button is pressed

while the FILTER indicator is turned on, the air

purifier is not turned on until the integrated

operation time of the indoor fan exceeds 1 hour

after operation start (It is nor the air purifier

operation time).

It is the safety measures considering an incom-

plete drain when electric dust collector has been

cleaned with water.

1. Purpose

This function detects error on the

refrigerating cycle or error on the com-

pressor, and performs protective control.

2. Operation

•Control of the compressor speed

The speed control is performed as

described in the left table based upon

the discharge temperature.

Purifying operation

Filter lamp ON

Purifier power OFF

Error input

Total operation

time 1000H

Purifier power ON

after 10 minutes

from the error input.

Error input

Purifier power ON

1 minute or less Filter lamp-OFF

continues.

Filter lamp ON

Purifier power OFF

1 2 3

Purifier power ON

YES

Td value

117°C

112°C

108°C

105°C

98°C

Control operation

Judges as an error and stops the compressor.

Reduce the compressor speed.

Reduce slowly compressor speed.

Keeps the compressor speed.

If the operation is performed with lower speed than one

commanded by the serial signal, speed is slowly raised

up to the commanded speed.

Operates with speed commanded by the serial signal.

12. Air purifying control [Detection of abnormality]

– 38 –

Item

14. Pulse motor

valve (P.M.V.)

control

Operation flow and applicable data, etc.

This function controls throttle amount of the

refrigerant in the refrigerating cycle.

According to operating status of the air conditioner,

this function also controls the open degree of valve

with an expansion valve with pulse motor.

Description

1) When starting the operation, move the

valve once until it fits to the stopper.

(Initialize)

* In this time, “Click” sound may be

heard.

2) Adjust the open degree of valve by super

heat amount. (SH control)

3) If the discharge temperature was exces-

sively up, adjust the open degree of valve

so that it is in the range of set tempera-

ture.

(Discharge temp. control)

4) When defrost operation is performed, the

open degree of valve is adjusted accord-

ing to each setup conditions during

preparation for defrost and during defrost

operation (4-way valve is inversed.).

5) To turn off the compressor while the air

conditioner stops by control of the

thermostat or by remote controller, adjust

the open degree of valve to the setup

value before stop of the compressor.

* SH (Super Heat amount) =

Ts (Temperature of suction pipe of the compressor) –

Tc or Te (Heat exchanger temperature at evaporation side)

* PMV: Pulse Motor Valve

Starting up

Defrost

Initialize

Move to

initial position

PMV open degree control

SH control Td

release control

Stop by

remote controller

Power OFF

Room temp. sensor

(Ta sensor) control

Compressor ON

– 39 –

Item

15. Clean operation

Operation flow and applicable data, etc.

•During clean operations: The louver opens

slightly. The indoor fan operates continuously at

a speed of 260 rpm.

Clean operation times

•To stop an ongoing clean operation at any time

Press the start/stop button on the remote controller twice during the clean

operation. (After pressing the button for the first time, press it for the

second time without delay (within 10 minutes).)

Description

1. Purpose

The clean operation is to minimize the

growth of mold, bacteria etc. by running

the fan and drying so as to keep the

inside of the air conditioner clean.

Clean operation

When the cooling or dry operation shuts

down, the unit automatically starts the

clean operation which is then performed

for the specified period based on duration

of the operation which was performed

prior to the shutdown, after which the

clean operation stops.

(The clean operation is not performed

after a heating operation.)

2. Operation

1) When the stop signal from the remote

controller is received, the S.CLEAN

indicator (green) on the main body

lights, and the clean operation starts.

(Neither the OPERATION indicator nor

the TIMER indicator light.)

2) The period of the clean operation is

determined by the duration of the

operation performed prior to the

reception of the stop code.

3) After the clean operation has been

performed for the specified period, the

unit stops operating.

Operation mode

Cooling: Auto (cooling) Dry

Heating: Auto (heating)

Auto (fan only)

Shutdown

Operation time Clean operation time

Up to 10 minutes No clean operation

performed (0 minutes)

From 10 minutes up 2 hours

to 1 hour

1 hour or longer 4 hours

No clean operation performed

Unit now performing cooling or dry operation

Press “STOP” button

Only S.CLEAN indicator lights, and clean operation starts

Time set now elapses

Operation stops

– 40 –

Item

16. Clean operation

release

Operation flow and applicable data, etc.

Setting the clean operation release

Description

* J04 will be near the MCU so take

steps to ensure that it will not be

exposed to excessive levels of

heat.

Also take care to avoid solder

bridging with the surrounding

components.

Setting the clean operation

Indoor P.C. board

Add J04 of the indoor P.C. board assembly.

* This cancels the auto restart function.

Hold down the auto operation switch on the indoor unit

for at least 3 seconds but not more than 10 seconds.

The indoor unit’s buzzer emits three beeps, and

the OPERATION indicator flashes at 5 Hz intervals.

This completes the clean operation release setting.

Cut J04 of the indoor P.C. board

* This step may be skipped if the auto restart function

is not required.

Hold down the auto operation switch on the indoor unit

for at least 3 seconds but not more than 10 seconds.

The indoor unit’s buzzer emits three beeps, and

the OPERATION indicator flashes at 5 Hz intervals.

This completes the clean operation setting.

J04

– 41 –

Both indoor units

start operation.

Unnecessary set

[Remote controller select]

Press the operation button

on the remote controller.

YES

CLOCK

CHECK

RESET

CLR SET

SWING

FIX FAN

OFF

HiPOWER

ECO MEMO

SLEEP

1.3.5.9H

When switching between

settings “A” and “B”, always

switch the indoor unit board and

the remote controller as a pair.

(Otherwise, the indoor unit will

not accept the remote

controller’s signals.)

Cutting direction

Jumper wire

Position of remote controller selector switch

Selector switch

Select “B” as the setting for

one of the two indoor units and

for the remote controller.

(See below for details.)

Item

17. Select switch on

remote controller

Operation flow and applicable data, etc. Description

1. Purpose

This operation is to operate only one

indoor unit using one remote controller.

2. Description

When operating one indoor unit in a

situation where two indoor units have

been installed in the same room or

nearby rooms, this operation prevents the

remote controller signal from being

received simultaneously by both units,

thus preventing both units from operating.

3. Operation

The indoor unit on which the remote

controller selection has been set to B

receives the signal of the remote control-

ler also set to B.

(At the factory the remote controller

selection is set to A on all the indoor

units. There is no A setting display.)

Setting the remote controller

Switching between A and B is enabled by cutting the jumper wire

inside the battery box using pliers.

1) Slide open the remote controller cover and remove the

batteries.

2) Cut the jumper wire inside the battery compartment using

nippers.

•The jumper wire should not remain in contact after being cut.

Also, be careful not to let plastic scraps, jumper wire cuttings

or other debris enter the inside of the remote controller.

3) Insert the batteries. “B” appears in the remote controller

display.

* Even after the jumper wire has been cut, switching between

A and B is still possible by pressing the CHECK button and

FIX button together.

The A or B setting, which was switched by pressing the

CHECK button and FIX button together, is restored to the

setting established prior to the switching when the battery is

replaced or the RESET button is pressed.

Setting the selector switch on the main unit

•Remove the front panel, and then set the selector switch to “B”.

•After making the switch setting, remount the front panel.

– 42 –

Operation

Press [RESET] button for more than

three seconds. (Less than 10 seconds)

Motions

The unit is on standby.

↓

The unit starts to operate. The green indicator is on.

↓After approx. three seconds,

The unit beeps three times The green indicator flashes

and continues to operate. for 5 seconds.

If the unit is not required to operate at this time, press [RESET]

button once more or use the remote controller to turn it off.

Operation

Press [RESET] button for more than

three seconds. (Less than 10 seconds)

Motions

The unit is in operation. The green indicator is on.

↓

The unit stops operating. The green indicator is turned off.

↓After approx. three seconds,

The unit beeps three times. The green indicator flashes

for 5 seconds.

If the unit is required to operate at this time, press [RESET] button

once more or use the remote controller to turn it on.

9-3. Auto Restart Function

This indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with

the set operating conditions in the event of a power supply being accidentally shut down.

The operation will resume without warning three minutes after power is restored.

This function is not set to work when shipped from the factory. Therefore it is necessary to set it to work.

9-3-1. How to Set the Auto Restart Function

To set the auto restart function, proceed as follows:

The power supply to the unit must be on ; the function will not set if the power is off.

Press the [RESET] button located in the center of the front panel continuously for three seconds.

The unit receives the signal and beeps three times.

The unit then restarts operating automatically in the event of power supply being accidentally shut down.

•When the unit is standby (Not operating)

•When the unit is in operation

•When the unit is turned on by this function, the louver will not swing even though it was swinging automatically

before shutting down.

•While the filter check indicator is on, the RESET button has the function of filter reset button.

– 43 –

Operation

Press [RESET] button for more than

three seconds. (Less than 10 seconds)

Motions

The unit is on standby.

↓

The unit starts to operate. The green indicator is on.

↓After approx. three seconds,

The unit beeps three times and continues to operate.

If the unit is not required to operate at this time, press [RESET]

button once more or use the remote controller to turn it off.

Operation

Press [RESET] button for more than

three seconds. (Less than 10 seconds)

Motions

The unit is in operation. The green indicator is on.

↓

The unit stops operating. The green indicator is turned off.

↓After approx. three seconds,

The unit beeps three times.

If the unit is required to operate at this time, press [RESET] button

once more or use the remote controller to turn it on.

9-3-2. How to Cancel the Auto Restart Function

To cancel auto restart function, proceed as follows :

Repeat the setting procedure : the unit receives the signal and beeps three times.

The unit will be required to be turned on with the remote controller after the main power supply is turned off.

•When the system is on stand-by (not operating)

•When the system is operating

9-3-3. Power Failure During Timer Operation

When the unit is turned off because of power failure

during timer operation, the timer operation is can-

celled. In that case, set the timer operation again.

NOTE :

The Everyday Timer is reset while a command signal

can be received from the remote controller even if it

stopped due to a power failure.

9-4. FILTER Indicator

When the elapsed time reaches 1000 hours after air

purifier operation, the FILTER indicator lights.

After cleaning the filters, turn off the FILTER indicator.

9-4-1. How to Turn Off FILTER Indicator

Press [RESET] button on the indoor unit.

NOTE :

If [RESET] button is pushed while the FILTER indica-

tor is not lit, the indoor unit will start the automatic

operation.

When you want a temporary operation while the

FILTER lamp lights, press [RESET] button to turn off

the FILTER lamp. (See page 36)

– 44 –

9-5. Remote Controller and Its Fuctions

9-5-1. Parts Name of Remote Controller

Infrared signal emitter

Transmits signal to the indoor unit.

button

Press the button to start operation.

(A receiving beep is heard.)

Press the button again to stop operation.

(A receiving beep is heard.)

If no receiving sound is heard from the indoor unit,

press the button twice.

Mode select button (MODE)

Press this button to select a mode.

Each time you press the button, the modes cycle in

order from A : Auto changeover control,

: Cool, : Dry, : Heat and back to A.

(A receiving beep is heard.)

Temperature button (

TEM

)

.. The temperature setting is increased to 30°C.

.. The temperature setting is reduced to 17°C.

(A receiving beep is heard.)

Fan speed button (FAN)

Press this button to select the fan speed.

When you select AUTO, the fan speed is automati-

cally adjusted according to the room temperature.

You can also manually select the desired fan speed

from five available settings.

(LOW , LOW

, MED , MED

HIGH ) (A receiving beep is heard.)

Auto louver button (SWING)

Press this button to swing the louver.

(A receiving beep is heard.)

Press this button again to stop the louver from

swinging. (A receiving beep is heard.)

Set louver button (FIX)

Press this button again to adjust the air flow

direction. (A receiving beep is heard.)

ON timer button (ON)

Use this button to change the clock and ON timer

times.

To move up the time, press of the “ON

”

button.

To move down the time, press of the “ON

”

button.

OFF timer button (OFF)

Use this button to change the OFF timer times.

To move up the time, press of the “OFF

OFF

”

button.

To move down the time, press of the “OFF

OFF

”

button.

Reserve button (SET)

Press this button to store the time settings.

(A receiving beep is heard.)

Cancel button (CLR)

Press this button to cancel the ON timer and OFF

timer. (A receiving beep is heard.)

High power button (Hi POWER)

Press this button to start high power operation.

Memory button (MEMO)

Press this button to ready for storing the settings.

Hold down the button for more than 3 seconds to

store the setting indicated on the remote controller

and until the mark is displayed.

Automatic operation button (AUTO)

Press this button to operate the air conditioner

automatically. (A receiving beep is heard.)

Economy button (ECO)

Press this button to operate the air conditioner

economically.

PRESET button

Press this button to operate the air conditioner to

the settings stored using the MEMO button.

PURE button (PURE)

Press this button to start the electrical air purifying

operation.

Press the button again to stop operation.

Sleep time button (SLEEP)

Press this button to start the sleep timer (OFF

timer) operation.

You can select the OFF timer time from among four

settings (1, 3, 5 or 9 hours).

TEMP

1.3.5.9H

PURE AUTO

PRESET

MODE

CLOCK

CHECK

RESET

HiPOWER

ECO MEMO

CLR SET

SWING

FIX FAN

SLEEP

OFF

13 5

– 45 –

AUTO

9-5-2. Name and Functions of Indications on Remote Controller

[Display]

All indications, except for the clock time indicator, are displayed by pressing the button.

Transmission mark

This transmission mark indicates when the

remote controller transmits signals to the indoor

unit.

Mode indicator

Indicates the current operation mode.

(AUTO : Automatic control, A : Auto changeover

control, : Cool, : Dry, : Heat)

Temperature indicator

Indicates the temperature setting.

(17°C to 30°C)

PURE indicator

Shows that the electrical air purifying operation is

in progress.

FAN speed indicator

Indicates the selected fan speed.

AUTO or five fan speed levels

(

LOW , LOW

, MED , MED

HIGH ) can be shown.

Indicates AUTO when the operating mode is

either AUTO or : Dry.

TIMER and clock time indicator

The time setting for timer operation or the clock

time is indicated.

The current time is always indicated except

during TIMER operation.

Hi-POWER indicator

Indicates when the Hi-POWER operation starts.

Press the Hi-POWER button to start and press it

again to stop the operation.

(MEMORY) indicator

Flashes for 3 seconds when the MEMO button is

pressed during operation.

The mark is shown when holding down the

button for more than 3 seconds while the mark is

flashing.

Press another button to turn off the mark.

ECO indicator

Indicates when the ECO is in activated.

Press the ECO button to start and press it again

to stop operation.

A, B change indicator remote controller

When the remote controller switching function is

set, “B” appears in the remote controller display.

(When the remote controller setting is “A”, there is

no indication at this position.)

•In the illustration, all indications are shown for

purposes of explanation.

During operation, only the relevant indicators are

shown on the remote controller.

– 46 –

9-6. Hi-POWER Mode

([Hi-POWER] button on the remote controller is pressed)

When [Hi-POWER] button is pressed while the indoor unit is in Auto, Cooling or Heating operation, Hi-POWER

mark is indicated on the display of the remote controller and the unit operates as follows.

1. Automatic operation

•The indoor unit operates in according to the current operation.

2. Cooling operation

•The preset temperature drops 1°C.

(The value of the preset temperature on the remote controller does not change.)

•If the difference between the preset temperature and the room temperature is big, the horizontal louver

moves to the Hi-POWER position automatically.

Then when the difference between them gets smaller, the horizontal louver returns automatically.

3. Heating operation

•The preset temperature increases 2°C.

(The value of the preset temperature on the remote controller does not change.)

4. The Hi-POWER mode can not be set in Dry operation

– 47 –

10. INSTALLATION PROCEDURE

10-1. Safety Cautions

1 Installation plate

Insert the cushion between

the indoor unit and wall, and

tilt the indoor unit for better

installation work.

Make sure the drain hose is

sloped downward.

The auxiliary piping can be

connected at the left, rear left,

rear right, right, bottom right or

bottom left as shown below.

Extension drain hose

(Option: RB-821SW)

6 mm thick heat resisting

polyethylene foam

For the rear left and left piping

Do not allow the drain hose

to become slack.

Cut the piping

hole slightly

sloped

Insulate the refrigerant pipes

separately, not together.

250 mm or more

from wall

In principle,

leave open

When installing the outdoor unit,

leave open in at least two of

directions (A), (B), (C) and (D)

shown in the right figure.

Ensure sufficient space

to allow drainage

(A)

(B)

(C)

(D)

Power cord

Wall

Bottom right

Rear

right

Right

Left

Bottom left

Rear left

As shown in the figure, position power cord and

connecting cable downward, and lead out along

piping connection port.

Before installing the wireless remote controller

• With the remote controller cover

removed, correctly load the

supplied batteries while

observing their polarity.

3 Batteries

Cover

2 Wireless remote controller

2 Wireless

remote controller

100 mm or more

from wall

4 Remote controller holder

(Mounting holes on both

left and right sides)

8 Remote controller

holder mounting screw

50 mm or more

from wall

80 mm or more only

when unobstructed to

the front and both sides

Air filters

6 Plasma pure filter

5 Zeolite-plus filter

140 mm or more

Hook

47 mm or more

74 mm

or more

Z Shield pipe

(for extension

drain hose)

7 Mounting screw

200 mm

or more

– 48 –

10-2. Optional Parts, Accessories and Tools

10-2-1. Optional Installation Parts

Part Code

Parts name

Refrigerant piping

Indoor unit name Liquid side (Outer diameter) Gas side (Outer diameter)

RAS-B10GKVP-E, B13GKVP-E 6.35 mm 9.52 mm

RAS-B16GKVP-E 6.35 mm 12.7 mm

Shield pipe (for extension drain hose) (polyethylene foam, 6 mm thick)

Q’ty

1 ea.

Attachment bolt arrangement of outdoor unit

•Secure the outdoor unit with the attachment bolts and

nuts if the unit is likely to be exposed to a strong wind.

•Use Ø8 mm or Ø10 mm anchor bolts and nuts.

If it is necessary to drain the defrost water, attach drain

nipple to the base plate of the outdoor unit before

installing it.

10-2-2. Accessory and Installation Parts

Suction side

Diffuser

Elongated

drain hole

(



)

Drain hole

(



)

Part name (Q’ty)

Installation plate × 1

Wireless remote control × 1

Battery × 2

Remote control holder × 1

Part No.









Part name (Q’ty)

Zeolite-plus filter × 1

Plasma pure filter × 1

Mounting screw Ø4 × 25L × 6

Remote control

holder mounting screw

Ø3.1 × 16L × 2

Part No.





Part name (Q’ty)

Drain nipple* × 1

(RAS-10GAVP-E,

13GAVP-E, 16GAVP-E)

Water-proof rubber cap* × 2

(RAS-10GAVP-E,

13GAVP-E, 16GAVP-E)

Name

Owner’s manual

Installation manual

Important information and warning*

B/W strips*

(Energy efficiency labels)

Parts marked with asterisk (*) are

packaged with the outdoor unit.

This model is not equipped with an extension drain hose.

Part No.









– 49 –

10-2-3. Installation/Servicing Tools

Changes in the product and components

In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged

accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed.

(1/2 UNF 20 threads per inch)

•In order to increase the pressure resisting strength of the refrigerant piping flare processing diameter and size

of opposite side of flare nuts has been changed. (for copper pipes with nominal dimensions 1/2 and 5/8)

New tools for R410A

Gauge manifold

Charge hose

Electronic balance

for refrigerant charging

Torque wrench

(nominal diam. 1/2, 5/8)

Flare tool (clutch type)

Gauge for projection

adjustment

Vacuum pump adapter

Gas leakage detector

Applicable to R22 model

——

Changes

As pressure is high, it is impossible to measure by means of

conventional gauge. In order to prevent any other refrigerant from

being charged, each port diameter has been changed.

In order to increase pressure resisting strength, hose materials

and port size have been changed (to 1/2 UNF 20 threads per inch).

When purchasing a charge hose, be sure to confirm the port size.

As pressure is high and gasification speed is fast, it is difficult to

read the indicated value by means of charging cylinder, as air

bubbles occur.

The size of opposite sides of flare nuts have been increased.

Incidentally,

a common wrench is used for nominal diameters 1/4 and 3/8.

By increasing the clamp bar’s receiving hole, strength of spring in

the tool has been improved.

Used when flare is made by using conventional flare tool.

Connected to conventional vacuum pump. It is necessary to use

an adapter to prevent vacuum pump oil from flowing back to the

charge hose. The charge hose connecting part has two ports-one

for conventional refrigerant (7/16 UNF 20 threads per inch) and

one for R410A. If the vacuum pump oil (mineral) mixes with R410A

a sludge may occur and damage the equipment.

Exclusive for HFC refrigerant.

•Incidentally, the “refrigerant cylinder” comes with the refrigerant designation (R410A) and protector coating in the

U. S’s ARI specified rose color (ARI color code: PMS 507).

•Also, the “charge port and packing for refrigerant cylinder” require 1/2 UNF 20 threads per inch corresponding to

the charge hose’s port size.

– 50 –

10-3. Indoor Unit

10-3-1. Installation Place

•A place which provides enough spaces around the

indoor unit as shown in the diagram.

•A place where there are no obstacle near the air

inlet and outlet.

•A place which allows easy installation of the piping

to the outdoor unit.

•A place which allows the front panel to be opened.

•The indoor unit shall be installed so that the top of

the indoor unit is positioned at least 2m in height.

•Also, avoid putting anything on the top of the

indoor unit.

CAUTION

•Direct sunlight on the indoor unit wireless

receiver should be avoided.

•The microprocessor in the indoor unit should

not be too close to r-f sources.

(For details, see the owner's manual.)

Remote controller

•Should be placed where there are no obstacles,

such as curtains, that may block the signal.

•Do not install the remote controller in a place

exposed to direct sunlight or close to a heating

source, such as a stove.

•Keep the remote controller at least 1 m away from

the nearest TV set or stereo equipment.

(This is necessary to prevent image disturbances or

noise interference.)

•The location of the remote controller should be

determined as shown below.

Fig. 10-3-1

10-3-2. Drilling a Hole and Mounting Instal-

lation Plate

Drilling a hole

When install the refrigerant pipes from the rear.

Fig. 10-3-2

1. After determining the pipe hole position on the

installation plate ( ð ) drill the pipe hole (Ø65

mm) at a slight downward slant to the outdoor

side.

NOTE :

•When drilling into a wall that contains a metal lath,

wire lath or metal plate, be sure to use a pipe hole

brim ring sold separately.

Mounting the installation plate

Indoor unit

(Top view)

(Side view)

Remote

controller Remote controller

Indoor unit

*: Axial distance

Reception

range

Reception

range

42 mm

65 mm

The center of the

pipe hole

Pipe

hole

Fig. 10-3-3

91 mm

25 mm

Anchor bolt holes

Pipe hole

Indoor unit

7 Mounting screw 1 Installation plate

– 51 –

When the installation plate is directly

mounted on the wall

1. Securely fit the installation plate onto the wall by

screws with the upper and lower catches, that

hold the indoor unit, facing out.

2. To mount the installation plate on a concrete wall

use anchor bolts. Drill the anchor bolt holes as

illustrated in the above figure.

3. Install the installation plate horizontally and level.

CAUTION

When installing the installation plate with mount-

ing screw, do not use the anchor bolt hole.

Otherwise the unit may fall down and result in

personal injury and property damage.

Fig. 10-3-4

Fig. 10-3-5

CAUTION

Failure to securely install the unit may result in

personal injury and/or property damage if the

unit falls.

•In case of block, brick, concrete or similar type

walls, drill 5 mm dia. holes in the wall.

•Insert clip anchors for the  mounting screws.

NOTE :

•Install the installation plate using mounting screws

between 4 to 6, being sure to secure all four

corners.

Anchor bolt

Projection

15mm or less

5 mm dia. hole

Clip anchor

(local parts)

7 Mounting screw

Ø4 × 25L

10-3-3. Electrical Work

1. The supply voltage must be the same as the

rated voltage of the air conditioner.

2. Prepare a power source for the exclusive use of

the air conditioner.

NOTE :

•Wire type :

More than H07RN-F or 245IEC66 (1.0mm²)

CAUTION

•This appliance can be connected to a main

circuit breaker in either of the following two

ways.

1. Connection to fixed wiring:

A switch or circuit breaker which discon-

nects all poles and has a contact separa-

tion of at least 3 mm must be incorporated

in the fixed wiring. An approved circuit

breaker or switch must be used.

2. Connection with power supply plug:

Attach power supply plug with power cord

and plug it into wall outlet. An approved

power supply cord and plug must be used.

NOTE :

•Perform wiring work being sure the wire length is

long enough.

10-3-4. Wiring Connection

How to connect the connecting cable

Wiring the connecting cable can be carried

out without removing the front panel.

1. Remove the air inlet grille. Open the air inlet grille

upward and pull it toward you.

2. Remove the terminal cover and cord clamp.

3. Insert the connecting cable (or as according to

local regulations/codes) into the pipe hole on the

wall.

4. Pull the connecting cable through the cable slot

on the rear panel so that it protrudes about

15 cm out of the front.

5. Insert the connecting cable fully into the terminal

block and secure it tightly with screws.

6. Tightening torque: 1.2 N•m (0.12 kgf•m)

7. Secure the connecting cable with the cord clamp.

8. Attach the terminal cover, rear plate bushing and

air inlet grille on the indoor unit.

– 52 –

CAUTION

•Be sure to refer to the wiring system diagram

labeled inside the front panel.

•Check local electrical regulations for any

specific wiring instructions or limitations.

10-3-5. Piping and Drain Hose Installation

Piping and drain hose forming

•Since condensation results in machine trouble,

make sure to insulate both the connecting pipes

separately.

(Use polyethylene foam as insulating material.)

Fig. 10-3-6

Fig. 10-3-7

Fig. 10-3-8

Fig. 10-3-9

NOTE :

WIRE TYPE : more than H07 RN-F or 245 IEC 66.

(1.0mm²)

Screw Screw

Terminal cover

Cord clamp

Terminal block

Earth wire

Connecting cable

Terminal block

Connecting cable

About 15 cm

Earth line

70 mm

10 mm

10 mm 50 mm

Fig. 10-3-10

1. Die-cutting front panel slit

Cut out the slit on the left or right side of the front

panel for the left or right connection and the slit

on the bottom left or side of thefront panel for the

bottom left or right connection with a pair of

nippers.

2. Changing drain hose

For left connection, left-bottom connection and

rear-left connection’s piping, it is necessary to

relocate the drain hose and drain cap.

How to remove the drain cap

Clip drain cap with needle-nose pliers, and pull out.

Fig. 10-3-11

How to remove the drain hose

The drain hose is secured in place by a screw.

Remove the screw securing the drain hose, then pull

out the drain hose.

Die-cutting

Front panel slit

Changing

drain hose

Piping preparation

Rear right

Rear left

Bottom left

Left

Bottom right

Right

Screw Drain hose

Fig. 10-3-12

– 53 –

4 mm

No gap

Insert a hexagon

wrench (Ø4mm)

Do not apply lubricating oil

(refrigerant machine oil)

when inserting the drain cap.

If applied, deterioration and

drain leakage of the drain

plug may occur.

How to attach the drain cap

1. Insert hexagonal wrench (4 mm).

Fig. 10-3-13

2. Firmly insert drain cap.

Fig. 10-3-14

How to attach the drain hose

Always use the original screw that secured the

drain hose to the unit. If using a different screw

may cause water to leak.

Insert the drain hose firmly until the connector

contacts with the insulation, then secure it in place

using the original screw.

CAUTION

Securely insert the drain hose and drain cap;

otherwise, water may leak.

In case of right or left piping

•After making slits on the front panel with a knife or

similar tool, cut them out with a pair of nippers or

an equivalent tool.

Fig. 10-3-15

Fig. 10-3-16

Left-hand connection with piping

Bend the connecting pipes so that they are posi-

tioned within 43 mm above the wall surface.

If the connecting pipes are positioned more than

43 mm above the wall surface, the indoor unit may

be unstable.

When bending the connecting pipe, make sure to

use a spring bender to avoid crushing the pipe.

Refer to the table below for the bending

radius of each connection pipe.

Fig. 10-3-17

NOTE :

If the pipe is incorrectly bent, the indoor unit may be

unstable on the wall.

After passing the connecting pipe through the pipe

hole, connect the connecting pipe to the auxiliary

pipes and wrap the facing tape around them.

In case of bottom right or bottom left piping

•After making slits on the front panel with a knife or

similar tool, cut them out with a pair of nippers or

an equivalent tool.

To connect the pipe after installation of the

unit (figure)

Outer diameter

6.35 mm

9.52 mm

12.7 mm

Bending radius

30 mm

40 mm

50 mm

Slit

43 mm

Use a screwdriver handle, etc.

(To the front flare)

Outward form of indoor unit

Gas side

220 mm

170 mm

R30 or less (Ø6.35), R40 or less (Ø9. 52), R50 or less (Ø12. 7)

Use polishing (polyethylene core or the like for bending pipe).

Liquid side

– 54 –

CAUTION

•Bind the auxiliary pipes (two) and connecting

cable with facing tape tightly.

In case of leftward piping and rear-leftward

piping, bind the auxiliary pipes (two) only with

facing tape.

Fig. 10-3-18

•Carefully arrange the pipes so that none of the

pipes stick out of the rear plate of the indoor unit.

•Carefully connect the auxiliary pipes and

connecting pipes to each other and cut off the

insulating tape wound on the connecting pipe

to avoid double-taping at the joint, moreover,

seal the joint with the vinyl tape, etc.

•Since condensation can result in machine

performance trouble, be sure to insulate both

connecting pipes. (Use polyethylene foam as

insulating material.)

•When bending a pipe, be careful not to crush it.

10-3-6. Indoor Unit Installation

1. Pass the pipe through the hole in the wall, and

hook the indoor unit on the installation plate at

the upper hooks.

2. Swing the indoor unit to right and left to confirm

that it is firmly hooked on the installation plate.

3. While pressing the indoor unit onto the wall, hook

it at the lower part on the installation plate.

Pull the indoor unit toward you to confirm that it is

firmly hooked on the installation plate.

Installation

plate

Indoor unit

Connecting

cable

Auxiliary pipes

10-3-7. Drainage

1. Run the drain hose at a downward sloped angle.

NOTE :

•Hole should be made at a slight downward slant

on the outdoor side.

Fig. 10-3-21

2. Put water in the drain pan and make sure that the

water is being drained outside.

3. When connecting extension drain hose, insulate

the connection part of extension drain hose with

shield pipe.

Fig. 10-3-22

CAUTION

Install the drain pipe for proper drainage.

Improper drainage can result in water dripping

inside the room.

This air conditioner has been designed to drain

water collected from condensation which forms on

the back of the indoor unit, to the drain pan.

Therefore, do not locate the power cord and other

parts at a high place than the drain guide.

Fig. 10-3-19

•For detaching the indoor unit from the installation

plate pull the indoor unit toward you while pushing

the bottom up at the specified places.

Fig. 10-3-20

Push Push

Push (unhook)

1Installation

plate

Hook here

Hook

50 mm

or more

Do not rise the drain hose. Do not form the drain hose

into the waved shape.

Do not put the

drain hose end

into water.

Do not put the drain

hose end in the

drainage ditch.

Shield pipe

Extension drain hose

Inside the room

Drain hose

Space for

pipes

Wall

Drain

guide

Fig. 10-3-23

– 55 –

10-4. Outdoor Unit

10-4-1. Installation Place

•A place which provides enough space around the

outdoor unit as shown in the diagram.

•A place which can bear the weight of the outdoor

unit and does not allow an increase in noise level

and vibration.

•A place where the operation noise and discharged

air do not disturb neighbors.

•A place which is not exposed to a strong wind.

•A place free of combustible gases.

•A place which does not block a passageway.

•When the outdoor unit is to be installed in an

elevated position, be sure to secure its feet.

•This air conditioner accepts a connection piping

length of up to 25 m.

•There is no need to add refrigerant as long as

the length of the connection piping is 15 m or

less.

•You will need to add 20 g of refrigerant per meter

of added connection piping for installations

requiring connection piping to be between 16 m

to 25 m.

•An allowable height level is up to 10 m.

•A place where the drain water does not cause any

problems.

Precautions for adding refrigerant

•Use a scale having a precision with at least 10 g

per index line when adding the refrigerant.

Do not use a bathroom scale or similar instrument.

•Use liquid refrigerant when refilling the refrigerant.

Since the refrigerant is in liquid form, it can fill

quickly.

Therefore, perform the filling operation carefully

and insert the refrigerant gradually.

CAUTION

1. Install the outdoor unit without anything

blocking the discharging air.

2. When the outdoor unit is installed in a place

always exposed to strong winds like on the

coast or on a high story of a building, secure

the normal fan operation using a duct or a

wind shield.

3. Especially in windy areas, install the unit to

prevent the admission of wind.

4. Installation in the following places may result

in trouble.

Do not install the unit in such places.

•A place full of machine oil.

•A saline-place such as the coast.

•A place full of sulfide gas.

•A place where high-frequency waves are

likely to be generated, such as from audio

equipment, welders, and medical equip-

ment.

Fig. 10-4-1

Strong

wind

– 56 –

Base plate

9 Drain nipple

Water-proof rubber caps

(supplied with the outdoor unit)

10-4-2. Draining the Water

•Holes are provided on the base plate of the

outdoor unit to ensure that the defrost water

produced during heating operations is drained off

efficiently.

If a centralized drain is required when installing the

unit on a balcony or wall, follow the steps below to

drain off the water.

1. Proceed with water-proofing by installing the

water-proof rubber caps  in the 2 elongated

holes on the base plate of the outdoor unit. [How

to install the water-proof rubber caps]

1) Place four fingers into each cap, and insert

the caps into the water drain holes by pushing

them into place from the underside of the

base plate.

2) Press down on the outer circumferences of

the caps to ensure that they have been

inserted tightly.

(Water leaks may result if the caps have not

been inserted properly, if their outer circumfer-

ences lift up or the caps catch on or wedge

against something.)

Fig. 10-4-2

2. Install the drain nipple  and a commercially

available drain hose (with 16 mm inside diam-

eter), and drain off the water.

(For the position where the drain nipple  is

installed, refer to the installation diagram of the

indoor and outdoor units.)

•Check that the outdoor unit is horizontal, and

route the drain hose at a downward sloped

angle while ensuring that it is connected tautly.

Do not use ordinary garden hose, but one can

flatten and prevent water from draining.

Fig. 10-4-3

Commercially available

drain hose

Base plate 9 Drain nipple

10-4-3. Refrigerant Piping Connection

Flaring

1. Cut the pipe with a pipe cutter.

Fig. 10-4-4

2. Insert a flare nut into the pipe, and flare the pipe.

•Projection margin in flaring : A (Unit : mm)

Rigid (Clutch type)

Fig. 10-4-5

Imperial (Wing nut type)

•Flaring size : B (Unit : mm)

Fig. 10-4-6

•In case of flaring for R410A with the conventional

flare tool, pull it out approx. 0.5 mm more than that

of R22 to adjust to the specified flare size.

The copper pipe gauge is useful for adjusting

projection margin size.

90˚

Obliquity Roughness Warp

Die Pipe

–0.4

Outer dia. of

copper pipe

6.35

9.52

12.7

R410A

tool used

0 to 0.5

Conventional

tool used

1.0 to 1.5

Outer dia. of

copper pipe

6.35

9.52

12.7

R410A

1.5 to 2.0

2.0 to 2.5

Outer dia. of copper pipe

6.35

9.52

12.7

R410A R22

9.1 9.0

13.2 13.0

16.6 16.2

– 57 –

Tightening Connection

Align the centers of the connecting pipes and tighten

the flare nut as much as possible with your fingers.

Then tighten the nut with a wrench and torque

wrench as shown in the figure.

Fig. 10-4-7

CAUTION

• Do not apply excessive force.

Otherwise, the nut may break.

(Unit : N·m)

•Tightening torque for connection of flare pipe

The pressure of R410A is higher than R22.

(Approx. 1.6 times.) Therefore securely tighten the

flare pipes which connect the outdoor unit and the

indoor unit with the specified tightening torque

using a torque wrench.

If any flare pipe is

incorrectly connected,

it may cause not only

a gas leakage but also

trouble in the

refrigeration cycle.

Outer dia. of copper pipe

Ø6.35 mm

Ø9.52 mm

Ø12.7 mm

Tightening torque

14 to 18 (1.4 to 1.8 kgf•m)

33 to 42 (3.3 to 4.2 kgf•m)

50 to 62 (5.0 to 6.2 kgf•m)

Fig. 10-4-8

Half union Flare nut

Externally

threaded side Internally

threaded side

Use a wrench

to secure. Use a torque wrench

to secure.

Flare at

indoor unit

side

Flare at

outdoor unit

side

10-4-4. Evacuating

After the piping has been connected to the indoor

unit, perform the air purge.

AIR PURGE

Evacuate the air in the connecting pipes and in

the indoor unit using a vacuum pump.

Do not use the refrigerant in the outdoor unit.

For details, see the vacuum pump manual.

Fig. 10-4-9

CAUTION

•IMPORTANT POINTS FOR PIPING WORK

1. Keep dust and moisture from entering the

pipes.

2. Tighten connections carefully (between pipes

and unit).

3. Evacuate the air in the connecting pipes

using a VACUUM PUMP.

4. Check for gas leaks at all connections.

Use a vacuum pump

Be sure to use a vacuum pump with counter-flow

prevention function so that oil inside the pump does

not flow back into the air conditioner pipes when the

pump stops. (If oil inside the vacuum pump enters

into the air conditioner circuit which uses R410A,

trouble with the refrigeration system may develop.)

1. Connect the charge hose from the manifold valve

to the service port of the gas side packed valve.

2. Connect the charge hose to the port of the

vacuum pump.

3. Open fully the low pressure side handle of the

gauge manifold valve.

4. Operate the vacuum pump to begin evacuating.

Perform evacuating for about 15 minutes if the

piping length is 20 meters (15 minutes for 20

meters) (assuming a pump capacity of 27 liters

per minute).

Confirm that the compound pressure gauge

reading is –101 kPa (–76 cmHg).

5. Close the low pressure valve handle of gauge

manifold.

6. Open fully the valve stem of the packed valves

(both sides of Gas and Liquid).

7. Remove the charging hose from the service port.

8. Securely tighten the caps on the packed valves.

Compound

pressure

gauge

Pressure gauge

Manifold valve

Handle Hi

(Keep full closed)

Charge hose

(For R410A only)

Vacuum pump

adapter for

counter-flow

prevention

(For R410A only)

Packed valve at liquid side

Packed valve at gas side

Service port

(Valve core (Setting pin))

Connecting

pipe

Handle Lo

Charge hose

(For R410A only)

-101kPa

(-76cmHg)

Vacuum

pump

– 58 –

Packed Valve handling precautions

•Open the valve stem all the way; but do not try to

open it beyond the stopper.

•Securely tighten the valve stem cap with torque in

the following table:

Hexagonal wrench is required.

Fig. 10-4-10

10-4-5. Wiring Connection

1. Remove the valve cover, the electric parts cover

and the cord clamp from the outdoor unit.

2. Connect the connecting cable to the terminal as

identified by the matching numbers on the

terminal block of indoor and outdoor unit.

3. Insert the power cord and the connecting cable

fully into the terminal block and secure it tightly

with screws.

4. Insulate the unused cords (conductors) from

water entering in the outdoor unit. Locate them

so that they do not touch any electrical or metal

parts.

5. Secure the power cord and the connecting cable

with the cord clamp.

6. Attach the electric parts cover and the valve

cover on the outdoor unit.

Stripping length of connecting cable

Fig. 10-4-11

Fig. 10-4-12

4mm

123 LN

Terminal block

Connecting cable Power cord

10 LN10123

Earth line Earth line

Connecting

cable Power cord

Gas side (Ø12.7 mm)

Gas side (Ø9.52 mm)

Liquid side (Ø6.35 mm)

Service port

50 to 62 N•m (5.0 to 6.2 kgf•m)

33 to 42 N•m (3.3 to 4.2 kgf•m)

14 to 18 N•m (1.4 to 1.8 kgf•m)

CAUTION

•Incorrect wiring connection may cause electri-

cal parts to burn out.

•Be sure to comply with local regulations/codes

when running the wire from outdoor unit to

indoor unit.

(Size of wire and wiring method etc.)

•Every wire must be securely connected.

•This installation fuse (25A D type )

must be used for the power supply line.

•If incorrect or incomplete wiring is carried out,

fire or smoke may result.

•Prepare the power supply for the exclusive use

of the air conditioner.

•This product can be connected to the main

breaker.

Connection to fixed wiring:

A switch which disconnects all poles and has a

contact separation of at least 3 mm must be

incorporated in the fixed wiring when connect-

ing to a main breaker circuit.

Model RAS-

Power source

Maximum running

current

Installation fuse

rating

Power cord

Connection cable

10GAVP-E 13GAVP-E 16GAVP-E

220 – 240 V ~50 Hz

220 V ~60 Hz

12 A

25A (D type )

H07RN-F or 245IEC66 (1.5 mm²)

H07RN-F or 245IEC66 (1.0 mm²)

– 59 –

10-5. Test Operation

10-5-1. Gas Leak Test

•Check the flare nut connections for gas leaks with

a gas leak detector and/or soapy water.

Fig. 10-5-1

10-5-2. Test Operation

To test the system, press and hold RESET button for

10 sec. (There will be one short beep.)

Fig. 10-5-2

10-5-3. Auto Restart Setting

This product is designed so that, after a power

failure, it can restart automatically in the same

operating mode as before the power failure.

Information

The product was shipped with Auto Restart

function in the OFF position.

Turn it ON as required.

How to Set the Auto Restart

•Press and hold the RESET button for about 3

seconds. After 3 seconds, three short electric

beeps will be heard to inform you that the Auto

Restart has been selected.

•To cancel the Auto Restart, follow the steps

described in the section Auto Restart Function on

Owner’s Manual.

10-5-4. Remote Controller Selector Switch

Setting

Remote controller selector switch

•If two indoor units are installed in the same room

or adjoining rooms, the second unit can inadvert-

ently receive a remote controller signal and start

operation when operating the first unit. This can be

prevented by setting one of the indoor units and

the corresponding remote controller to the B

setting (the A setting is the default setting).

1. Setting the selector switch on the main unit

• Remove the front panel, and then set the

selector switch to “B”.

• After making the switch setting, remount the

front panel.

2. Setting the remote controller

1) Slide open the remote controller cover and

remove the batteries.

2) Cut the jumper wire inside the battery

compartment using nippers.

•The jumper wire should not remain in

contact after being cut. Also, be careful

not to let plastic scraps, jumper wire

cuttings or other debris enter the inside of

the remote controller.

3) Insert the batteries. “B” appears in the

remote controller display.

3. Check that the indoor unit can be operated by

the modified remote controller.

Check places for

flare nut connections

(indoor unit)

Check places

for outdoor unit

Valve cover

Electric parts

Fig. 10-5-3

Fig. 10-5-4

Position of remote controller selector switch

Selector switch

CLOCK

CHECK

RESET

CLR SET

SWING

FIX FAN

OFF

HiPOWER

ECO MEMO

SLEEP

1.3.5.9H

When switching between settings “A” and

“B”, always switch the indoor unit board

and the remote controller as a pair.

(Otherwise, the indoor unit will not

accept the remote controller’s signals.)

Jumper wire

Cutting direction

– 60 –

11. HOW TO DIAGNOSE THE TROUBLE

The pulse motor circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according

to the trouble diagnosis procedure as described below. (Refer to the check points in servicing written on the

wiring diagrams attached to the indoor/outdoor units.)

Table 11-1

KPrecautions when handling the new inverter (3DV Inverter)

CAUTION: HIGH VOLTAGEN

The high voltage circuit is incorporated.

Be careful to do the check service, as the electric shock may be caused in case of touching parts on the

P.C. board by hand.

The new inverter (3DV inverter) will be incorporated starting with this unit.

(3DV: 3-shunt Discrete Vector control)

KThe control circuitry has an uninsulated construction.

Fig. 11-1

No.

Troubleshooting Procedure

First Confirmation

Primary Judgment

Judgment by Flashing LED of Indoor Unit

Self-Diagnosis by Remote Controller

Judgment of Trouble by Every Symptom

Page

No.

Troubleshooting Procedure

How to Check Simply the Main Parts

Troubleshooting

How to Diagnose Trouble in Outdoor Unit

How to Check Simply the Main Parts

How to Simply Judge Whether Outdoor

Fan Motor is Good or Bad

Page

IGBT × 6

FET × 6

MCU

Compressor

Fan motor

GAVP-E, EAVP-E series (uninsulated type)

Shared potential

Driver

Amplifier

G-Tr

FET

(6IN1)

MCU

Compressor

Fan motor

JAVP-E series (insulated type)

Shared potential

Photocoupler

Hall device

– 61 –

CAUTION

A high voltage (equivalent to the supply voltage) is also energized to ground through the

sensors, PMV and other low-voltage circuits. The sensor leads and other wires are covered

with insulated tubes for protection. Nevertheless, care must be taken to ensure that these

wires are not pinched.

Take sufficient care to avoid directly touching any of the circuit parts without first turning off

the power.

At times such as when the circuit board is to be replaced, place the circuit board assembly in

a vertical position.

Laying the board flat on an electrically conductive object (such as the top panel of the air conditioner's

outdoor unit) while a charge is still retained by the electrolytic capacitors of the inverter's main circuit may

cause short-circuiting between the electrolytic capacitors and secondary circuit components and result in

damage to the components.

Sensor leads

Do NOT lay the circuit board assembly flat.

KPrecautions when inspecting the control section of the outdoor unit

NOTE :

A large-capacity electrolytic capacitor is used in the outdoor unit controller (inverter). Therefore, if the power

supply is turned off, charge (charging voltage DC280 to 380V) remains and discharging takes a lot of time.

After turning off the power source, if touching the charging section before discharging, an electrical shock may

be caused. Discharge the electrolytic capacitor completely by using soldering iron, etc.

< Discharging method >

1. Remove the inverter cover (plating) by opening four mounting claws.

2. As shown below, connect the discharge resistance (approx. 100Ω40W) or plug of the soldering iron to

voltage between + – terminals of the C14 (“CAUTION HIGH VOLTAGE” is indicated.) electrolytic capacitor

(500µF/400V) on P.C. board, and then perform discharging.

Fig. 11-2

Discharging position

(Discharging period

10 seconds or more)

Plug of

soldering iron

Inverter cover P. C. board

(Soldered surface)

Fig. 11-3

– 62 –

11-1. First Confirmation

11-1-1. Confirmation of Power Supply

Confirm that the power breaker operates (ON) normally.

11-1-2. Confirmation of Power Voltage

Confirm that power voltage is AC 220–230–240 ± 10%.

If power voltage is not in this range, the unit may not operate normally.

11-1-3. Operation Which is not a Trouble (Program Operation)

For controlling the air conditioner, the program operations are built in the microcomputer as described in the

following table.

If a claim is made for running operation, check whether or not it meets to the contents in the following table.

When it does, we inform you that it is not trouble of equipment, but it is indispensable for controlling and main-

taining of air conditioner.

Table 11-1-1

No.

Operation of air conditioner

When power breaker is turned “ON”, the

operation indicator (Green) of the indoor

unit flashes.

Compressor may not operate even if the

room temperature is within range of

compressor-ON.

In Dry and ECO mode, FAN (air flow)

display does not change even though FAN

(air flow select) button is operated.

Increasing of compressor motor speed

stops approx. 30 seconds after operation

started, and then compressor motor speed

increases again approx. 30 seconds after.

In AUTO mode, the operation mode is

changed.

In HEAT mode, the compressor motor

speed does not increase up to the maxi-

mum speed or decreases before the

temperature arrives at the set temperature.

Description

The OPERATION lamp of the indoor unit flashes when

power source is turned on. If [START/STOP] button is

operated once, flashing stops.

(Flashes also in power failure)

The compressor does not operate while compressor

restart delay timer (3-minutes timer) operates.

The same phenomenon is found after power source has

been turned on because 3-minutes timer operates.

The air flow indication is fixed to [AUTO].

For smooth operation of the compressor, the compres-

sor motor speed is restricted to Max. 41 rps for 2 min-

utes, and Max.91 rps for 2 minutes to 3 minutes, respec-

tively after the operation has started.

After selecting Cool or Heat mode, select an operation

mode again if the compressor keeps stop status for 15

minutes.

The compressor motor speed may decrease by high-

temp. release control (Release protective operation by

temp.-up of the indoor heat exchanger) or current

release control.

– 63 –

11-2. Primary Judgment

To diagnose the troubles, use the following methods.

1) Judgment by flashing LED of indoor unit

2) Self-diagnosis by service check remote controller

3) Judgment of trouble by every symptom

Firstly use the method 1) for diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles.

11-3. Judgment by Flashing LED of Indoor Unit

While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the

contents of self-diagnosis are displayed with block on the indoor unit indication section.

Table 11-3-1

NOTES :

1. The contents of items B and C and a part of item E are displayed when air conditioner operates.

2. When item B and C, and item B and a part of item E occur concurrently, priority is given to the block of item B.

3. The check codes can be confirmed on the remote controller for servicing.

OPERATION (Green)

Flashing display (1 Hz)

OPERATION (Green)

TIMER (Yellow)

FILTER (Orange)

Flashing display (5 Hz)

OPERATION (Green)

FILTER (Orange)

Flashing display (5 Hz)

OPERATION (Green)

TIMER (Yellow)

Flashing display (5 Hz)

OPERATION (Green)

Flashing display (5 Hz) Protective circuit operation for indoor P.C. board

Protective circuit operation for connecting cable

and serial signal system

Protective circuit operation for outdoor P.C. board

Protective circuit operation for others

(including compressor)

Power failure (when power is ON)

Indoor indication

lamp flashes.

Which lamp

does flash?

Item

Check

code Block display Description for self-diagnosis

– 64 –

11-4. Self-Diagnosis by Remote Controller (Check Code)

1. If the lamps are indicated as shown B to E in Table 11-3-1, execute the self-diagnosis by the remote controller.

2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condi-

tion and indicates the information of the self-diagnosis on the display of the remote controller with the check

codes. If a fault is detected, all lamps on the indoor unit will flash at 5Hz and it will beep for 10 seconds

(Beep, Beep, Beep ... ). The timer lamp usually flashes (5Hz) during self-diagnosis.

11-4-1. How to Use Remote Controller in Service Mode

TEMP

PURE AUTO

PRESET

MODE

1.3.5.9H

CLOCK

CHECK

RESET

HiPOWER

ECO MEMO

CLR SET

SWING

FIX FAN

SLEEP

OFF

Press [CHECK] button with a tip of pencil to set the

remote controller to the service mode.

• “ ” is indicated on the display of the remote

controller.

Press [ON ] or [OFF ] button

If there is no fault with a code, the indoor unit will beep

once (Beep) and the display of the remote controller will

change as follows :

• The TIMER indicator of the indoor unit flashes continuously.

(5 times per 1 sec.)

• Check the unit with all 52 check codes ( to )

as shown in Table-11-4-1.

• Press [ON ] or [OFF ] button to change the check

code backward.

If there is a fault, the indoor unit will beep for 10

seconds (Beep, Beep, Beep...).

Note the check code on the display of the remote

controller.

• 2-digits alphanumeric will be indicated on the display.

• All indicators on the indoor unit will flash.

(5 times per 1 sec.)

Press [START/STOP] button to release the service mode.

• The display of the remote controller returns to as it

was before service mode was engaged.

Time shortening method.

1. Press SET button while pushing CHECK button.

2. Press [START/STOP] button.

Alphanumeric characters are

used for the check codes.

is 5. is 6.

is A. is B.

is C. is D.

• • •

Fig. 11-4-1

– 65 –

Check

code

Check

code

Judgment and action

1. Check the room temp. sensor.

2. When the room temp. sensor is

normal, check P.C. board.

1. Check heat exchanger sensor.

2. When heat exchanger sensor is

normal, check P.C. board.

1. Check the motor.

2. When the motor is normal,

check P.C. board.

Replace P.C. board.

1. When the outdoor unit never

operate:

1) Check connecting cable, and

correct if defective wiring.

2) Check 25A fuse of inverter

P.C. board.

3) Check 3.15A of inverter P.C.

board.

2. To display [Other] block during

operation, check compressor

thermo. operation and supply

gas (check gas leak also).

3. Unit operates normally during

check.

If return serial signal does not

stop between indoor terminal

board 2 and 3, replace inverter

P.C. board.

If signal stops between indoor

terminal board 2 and 3, replace

indoor P.C. board.

11-4-2. Caution at Servicing

1. After servicing, press the START/STOP button to return to the normal mode.

2. After servicing by the check code, turn off breaker of the power supply, and turn on breaker of the power

supply again so that memory in the microcomputer returns the initial status.

However, the check codes are not deleted even if the power supply is turned off because they are stored in

the fixed memory.

3. After servicing, press [CLR] button under check mode status and then send the check code “7F” to the

indoor unit. The error code stored in memory is cleared.

Table 11-4-1

Block distinction Operation of diagnosis function

Block

Indoor P.C.

board etc.

Not

displayed

Connecting

cable and

serial signal

Cause of operation

Short-circuit or discon-

nection of the room

temperature sensor

(TA sensor).

Being out of place,

disconnection, short-

circuit, or migration of

heat exchanger sensor

(TC sensor)

Lock of indoor fan or

trouble on the indoor fan

circuit

Trouble on other indoor

P.C. boards

Return serial signal is not

sent to indoor side from

operation started.

1) Defective wiring of

connecting cable

2) Operation of compres-

sor thermo Gas

shortage Gas leak

Air

conditioner

status

Operation

continues.

Operation

continues.

All off

Operation

continues.

Operation

continues.

Remarks

Displayed when

error is detected.

Displayed when

error is detected.

Displayed when

error is detected.

Displayed when

error is detected.

Flashes when

trouble is detected

on Return serial

signal, and normal

status when signal

is reset.

– 66 –

Check

code

Check

code

Block distinction

Judgment and action

Even if trying operation again, all

operations stop immediately. :

Replace P.C. board.

1. Even if connecting lead wire of

compressor is removed,

position-detect circuit error

occurred. : Replace P.C. board.

2. Measure resistance between

wires of compressor, and

perform short-circuit. : Replace

compressor.

Even if trying operation again, all

operations stop immediately. :

Replace P.C. board.

1. Check sensors (TE, TS).

2. Check P.C. board.

1. Check discharge temp. sensor

(TD).

2. Check P.C. board

Position-detect error, over-current

protective operation of outdoor fan

drive system, fan lock, etc. :

Replace P.C. board or fan motor.

1. Check outdoor temp. sensor

(TO).

2. Check P.C. board.

When 20 seconds passed after

start-up, position-detect circuit error

occurred. : Replace compressor.

Trouble on P.M.V.

1. Repeat Start and Stop with

interval of approx. 10 to 40

minutes. (Code is not displayed

during operation.)

Supply gas.

(Check also gas leak).

2. Unit operates normally during

check.

If return serial signal does not

stop between indoor terminal

block 2 and 3, replace inverter

P.C. board.

If signal stops between indoor

terminal block 2 and 3, replace

indoor P.C. board.

1. Trouble on compressor

2. Trouble on wiring of compressor

(Missed phase)

1. Check dischage temp. sensor

(TD).

2. Gas leakage

3. Trouble on P.M.V.

1. Check power voltage.

(220–230–240 V +10%)

2. Overload operation of refrigera-

tion cycle

Check installation condition

(Short-circuit of outdoor diffuser).

1. Check 4-way valve operation.

Block

Outdoor P.C.

board

Not

displayed

Outdoor P.C.

board

Others

(including

compressor)

Operation of diagnosis function

Cause of operation

Inverter over-current

protective circuit

operates. (Short time)

Position-detect circuit

error or short-circuit

between windings of

compressor

Current-detect circuit

error

Being out of place,

disconnection or short-

circuit of the outdoor

heat exchanger sensor

(TE) or suction temp.

sensor (Ts)

Disconnection or short-

circuit of discharge

temp. sensor

Outdoor fan drive

system error

Outdoor heat exchanger

temp. sensor error

Compressor drive output

error, Compressor error

(lock, missing, etc.),

Break down

Return serial signal has

been sent when

operation started, but it

is not sent from halfway.

1) Compressor thermo.

operation

Gas shortage

Gas leak

2) Instantaneous power

failure

Compressor does not

rotate.

(Current protective

circuit does not operate

when a specified time

passed after compressor

had been activated.)

Discharge temp.

exceeded 117°C

Break down of

compressor

4-way valve inverse error

(TC sensor value

lowered during heating

operation.)

Air

conditioner

status

All off

Operation

continues

All off

Operation

continues

All off

Operation

continues

Remarks

Displayed when

error is detected.

Displayed when

error is detected.

Displayed when

error is detected.

Displayed when

error is detected.

Displayed when

error is detected.

Displayed when

error is detected.

——

Displayed when

error is detected.

Flashes when

trouble is detected

on return serial

signal, and normal

status when signal

is reset.

Displayed when

error is detected.

Displayed when

error is detected.

Displayed when

error is detected.

——

– 67 –

11-5. Judgment of Trouble by Every Symptom

11-5-1. Indoor Unit (Including Remote Controller)

(1) Power is not turned on (Does not operate entirely)

1. Is the supply voltage normal?

2. Is the normal voltage provided to the outdoor unit?

3. Is the crossover cable connected properly?

4. Is the fuse (F01) blown?

•Be sure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of

damage of the motor.

(2) Power is not turned on though Indoor P.C. board is replaced

Turn off power supply once, and

5 second later, turn it on again.

Is OPERATION indicator flashing?

Is it possible to turn on

power supply by pushing

[START/STOP] button

on remote controller?

Is voltage

(DC12V or 5V)

indicated on rear of

indoor control

board normal?

Does transmission mark

on remote controller flash

normally,and is its signal

transmitted properly?

Is DC310–340V

supplied between

CN10 1 – 3 ?

Does fan

motor connector

between CN10 1 –

3 short-circuit?

Item by symptoms

Operation

Check Item

Considerable principle cause

Measures

Parts (R04, R05, DB01, C01,

C03, IC01 and T01) are defective.

Remote controller is defective.

Refer to (5) “Troubleshooting

for remote controller”.

Parts of a power supply circuit

defective.

Unit operates normally.

Replace main

P.C. board

Replace fan

motor.

Is fuse (F01)

of indoor control

board blown?

Microcomputer

is defective.

NO NO

YES

YES YES

NO NO

To item of

“Power supply is not turned on”.

Turn on power supply.

Does OPERATION indicator flash? Is wired correctly to white and

black lead wires of terminal block? Correct wiring.

– 68 –

Turn off power

supply once, and

turn it on again.

Start to operate

indoor unit in cooling

operation at airflow

level “LOW”.

Turn off indoor unit and

remove connector from motor.

Then start to operate indoor

unit with remote controller.

Turn off indoor unit and remove

connector from motor.

Then push START/STOP button

on remote controller to stop

flashing lamp on indoor unit.

Change airflow level

to “HIGH”.

Turn off indoor unit

and rotate cross-flow

fan by hand when the

unit is on standby.

At this time, is it possible to

detect DC 1V or more

between

+ and

–

of motor connector

(CN10).

Start to operate the

indoor unit in except

heating operation.

At this time, is it possible

to detect DC 1V or more

between

+ and

–

of motor connector (CN10)?

(Check this condition

within 15 seconds after

starting unit.)

Start to operate the

indoor unit in except

heating operation.

At this time, is it possible to

detect DC 1V or more between

+ and

– of motor

connector (CN10)?

Is it possible to detect

DC 1V or more between

+ and

– of

motor connector (CN10).

Is it possible to detect

DC 310–340V between

+ and

– of motor

connector (CN10).

(Motor connection condition)

Is it possible to detect DC 15V

between

+ and

– of

motor connector (CN10).

Is it possible to detect

DC 15V between

and

– of motor

connector (CN10).

Is it possible to

change airflow level

to “HIGH”?

Is it possible to

rotate cross-flow fan by

hand properly?

Does fan motor

continue to operate?

Does indoor

fan operate?

Fan motor

operates normally.

Peplace indoor

fan motor.

Peplace main

P.C. board.

Peplace

bearing.

YES

(3) Only the indoor motor fan does not operate

1. Is it possible to detect the power supply voltage (AC220–240V) between Q and R on the terminal block?

2. Does the indoor fan motor operate in cooling operation?

(In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned

on, to prevent a cold air from blowing in.)

– 69 –

Indoor fan starts rotating when power supply is turned on.

(Check output DC voltage of fan motor on P.C. board.)

Measure voltage between 3 (GND : BLACK)

and 5 (V line : YELLOW) of motor connector (CN10)

while indoor fan motor is rotating.

DC 1.0V or more

P.C. board is defective.

6 (Blue)

5 (Yellow)

4 (White)

3 (Black)

2 –

1 (Red)

Motor is defective.

Under DC 1.0V

CN10

Yellow

Black

P.C. board

Replace P.C. board. Replace motor.

(4) Indoor fan motor automatically starts to rotate by turning on power supply

<Cause>

The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to inside of the motor.

If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning

on power supply.

1. Remove the front panel. (Remove 2 screws.)

2. Remove the cover of the fan motor lead wires.

3. Check DC voltage with CN10 connector while the fan motor is rotating.

NOTE :

•Do not disconnect the connector while the fan motor is rotating.

•Use a thin test rod.

– 70 –

YES

Push the START/STOP button.

Is transmission

mark indicated?

The unit does not beep at all.

Operation lamp on indoor

unit is not indicated.

NOTE : After replacing batteries,

push the RESET button

with a tip of a pencil.

Is receiver

on indoor unit

exposed to

direct sunlight?

Avoid direct

sunlight.

Is there any

thyristor

fluorescent light

nearby?

Keep indoor unit

away from thyristor

fluorescent light.

Does indoor unit

operate when moving

remote controller

near receiver or

indoor unit?

Batteries are

exhausted.

Does radio sound

is affected by remote

controller when a signal is

transmitted at distance of

5 cm from radio?

Is transmission

mark indicated?

P.C. board

is defective.

Replace

P.C. board. Replace

batteries. Replace

remote controller.

Normal

operation

Remote controller

is defective.

YES

Does indoor unit

start to operate by

automatic restart

function?

Push the START/

STOP button

Does indoor unit

beep and operate?

Push RESET button

on remote controller

with tip of pencil.

(5) Troubleshooting for remote controller

Check that A or B selected on the main unit is matched with A or B selected on the remote controller.

– 71 –

Refer to the chart in 11-6.

Gas leak

P.M.V. is defective.

Miswiring of connecting wires of indoor/outdoor units

Clogging of pipe and coming-off of TC sensor

Gas circulation amount is down.

Measure gas pressure.

Gas shortage

Gas leak

Pipe clogging

Thermo. operation of compressor

Red

White

Terminal block

S5277G

Tester

Terminal block at indoor side

S5277G or equivalent (G or J type)

(Diode with rated voltage of 400V

or more is acceptable.)

To item of Outdoor unit does not operate.

11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)

(1) Outdoor unit does not operate

1) Is the voltage between R and S of the indoor terminal block varied?

Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the follow-

ing diagram.

NOTE:

•Measurement should be performed 2 minutes and 30 seconds after starting of the operation.

•Be sure to prepare a diode for judgment.

Normal time : Voltage swings between DC15 and 60V. ...................Inverter Assembly check (11-8-1.)

Abnormal time : Voltage does not vary.

(2) Outdoor unit stops in a little while after operation started

<Check procedure> Select phenomena described below.

1) The outdoor unit stops 10 to 20 minutes after operation started, and 10 minutes or more are required to

restart the unit.

2) If the unit stops once, it does not operate until the power will be turned on again.

3) The outdoor unit stops 10 minutes to 1 hour after operation started, and an alarm is displayed.

(Discharge temp. error check code 03, 1E Sensor temp. error check code 02, 1C)

– 72 –

YES

Gas leakage,

disconnection of TS/TC

sensors (Check code 02, 1C)

Discharge temp. error,

gas leakage

(Check code 03, 1E)

1C 1E

Gas amount check and valve clogging check

Remove TC sensor connector from the P.C. board in indoor unit.

(Remove connector from the P.C. board.)

Operate the air conditioner in COOL mode by TEMP button

(“Beep” sound is heard if keeping pushed for 10 seconds.).

The operation enters temporary operation mode which fixes opening degree of compressor speed.

Check condensation at outlet of PMV, and then check operating pressure from the service port.

Valve drive check

Check the operating pressure from service port, and add gas if pressure is low.

Is connecter of coil connected to inverter?

Is coil of the pulse motor valve

(P.M.V.) correctly set?

Existence of condensation at outlet of P.M.V.

If there is condensation at outlet (1/4 inch=Ø6.35mm valve side),

the valve is clogged.

Are temp. sensors of indoor/outdoor units correctly set to the holder?

NOTE :

The temperature sensors which are used to control pulse motor valve

include indoor heat exchanger sensor (TC), outdoor heat exchanger temp.

sensor (TE), outdoor suction temp. sensor (TS) and outdoor sensor (TO).

Set it correctly.

Replace coil valve.

Replace valve.

Add gas.

Is positioning sound of valve (sound hitting to stopper) heard

from valve when the air conditioner starts the operation after turning off power

of the air conditioner once?

11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E

– 73 –

Primary checkOperation check

Turn off the power breaker once,

and turn on again after 10 seconds.

Does the OPERATION indicator flash?

Turn off the power breaker and remove

CN34 (Micro switch connector).

Short-circuit between and pin

of CN34 at PC side, and turn on the

power breaker after 10 seconds.

1) Check operation while short-circuiting CN34 of the main P.C. board.

2) Perform air purifying operation by the remote controller.

• In this time, check that the remote controller is in status which is shortened by time on

the reactivation preventive timer and all display indicators go on for approx. 3 seconds

when a signal is received.

If time on the reactivation preventive timer is not shortened,

the high-voltage is not applied to electrode of the air purifier for approx. 1 hour.

• While the air purifier operates, check that the fan speed [AUTO] is not displayed.

(Because the power ON/OFF is controlled on the program)

3) Be sure not to touch the electric dust collector, ionizer, or ionized wire unit with the human body.

Is there conduction of

micro-switch connector under

OFF status of the micro-switch

(Front panel opened)?

Is there conduction of

micro-switch connector under

ON status of the micro-switch

(Front panel closed)?

Does the indoor fan rotate?

Does the PURE indicator (Blue) or

the FILTER indicator (Orange) go on?

Is DC12V applied

between (Red/DC12V) and

(Brown/GND) of CN1 of the

high-voltage generator?

Is DC12V applied

between (+) and (–)

of CN33 of the main

P.C. board (MCC5020)?

Micro-switch is stuck

Micro-switch malfunction

To item “Power supply is not turned on”

Replace the main P.C. board (MCC5020)

Replace micro-switch.

Does the PURE indicator

go off within 2 seconds after

it was ON, and does the FILTER

indicator (Orange) go on?

Are the electric dust

collector and ionizer dried?

(Electrode check)

Dry the electric

dust collector

and ionizer.

Is DC-5V to DC-10V

applied between

(Brown/Negative voltage)

and (Brown/GND)

of CN33 of the main

P.C. board?

Is output of the ionizer

approx. 4.0 kV to 4.8 kV?

Is output of the collector

approx. 3.0 kV to 3.8 kV?

Are the electric dust

collector/ionizer/ionized

wire units dirty?

Is an abnormal sound

(cracking noise) heard

from the electrode?

Referring to the right figure, check the

high-output voltage of the air filter unit.

(NOTE)

Use an exclusive high voltage tester;

otherwise the tester may be broken.

No trouble

Replace the main P.C. board (MCC5020).

Replace the high-voltage generator.

To item “Only indoor fan does not operate”

YES

NO NO

YES

( )

Refer to items, cleaning and check

for the electric dust collector/ionizer/

ionized wire units.

When the ionized wire is

disconnected or when dirt is

not cleaned even cleaned,

replace each unit.

• Conduction check of micro-switch

Tester

GND

• How to check output of the air purifier

Ionizer

output

Collector

output

High-voltage tester

1 1 2

1 2

Push the switch

→ ON

Release the switch

→ OFF

Be sure not to come

to contact to the gray

part or not to touch

the ionized cables.

11-7. Troubleshooting

11-7-1. How to Check Whether the Air Purifier is Good or Not

– 74 –

11-7-2. How to Check Whether the Minus Ion Generator is Good or Not

1) Check operation while short-circuiting CN34 of the main P.C. board.

2) Perform air purifying operation by the remote controller.

• In this time, check that the remote controller is in status which is shortened by time on

the reactivation preventive timer and all display indicators go on for approx. 3 seconds

when a signal is received.

If time on the reactivation preventive timer is not shortened,

the high-voltage is not applied to electrode of the air purifier for approx. 1 hour.

• While the air purifier operates, check that the fan speed [AUTO] is not displayed.

(Because the power ON/OFF is controlled on the program)

3) Be sure not to touch the electrode with the human body.

( )

Does the electrode

output approx. –6kV?

Replace the main P.C. board (MCC5020).

No trouble

YES

Primary checkOperation check

Turn off the power breaker once,

and turn on again after 10 seconds.

Does the OPERATION indicator flash?

Turn off the power breaker and remove

CN34 (Micro switch connector).

Short-circuit between and pin

of CN34 at PC side, and turn on the

power breaker after 10 seconds.

Is there conduction of

micro-switch connector under

OFF status of the micro-switch

(Front panel opened)?

Is there conduction of

micro-switch connector under

ON status of the micro-switch

(Front panel closed)?

Does the indoor fan rotate?

Does the PURE indicator (Blue) or

the FILTER indicator (Orange) go on?

Is DC12V applied

between (Red/DC12V) and

(Brown/GND) of CN1 of the

high-voltage generator

in the air purifier?

Micro-switch is stuck

Micro-switch malfunction

To item “Power supply is not turned on”

Replace micro-switch.

Push the switch

→ ON

Release the switch

→ OFF

Does the PURE indicator

go off within 2 seconds after

it was ON, and does the FILTER

indicator (Orange) go on?

Replace the

high-voltage generator

To item “Only indoor fan does not operate”

To item “How to check whether

the air purifier is good or not”

YES

• Conduction check of micro-switch

Tester

• How to check output of minus ion

Replace the power P.C. board

(MCC5020) or the housing assembly.

high-voltage

unit

Electrode

High-voltage tester

Referring to the right figure, check the

high-voltage output of the air ionizer.

In this time, peel the thermal insulator, and attach

it to the original position after check operation.

NOTE :

Use an exclusive high voltage tester; otherwise

the tester may be broken.

GND

– 75 –

11-8. How to Diagnose Trouble in Outdoor Unit

11-8-1. Summarized Inner Diagnosis of Inverter Assembly

Table 11-8-1

Diagnosis/Process flowchart Item

Preparation

Check

Operation

Measure-

ment

Check

Stop

Check

Measure-

ment

Contents

Tu r n “OFF” the power supply

breaker, and remove 3P

connector which connects

inverter and compressor.

•Check whether 25A fuse

on the control board

assembly is blown or not.

(F01)

Turn on the power breaker,

and operate the air condi-

tioner in COOL mode by time

shortening.

Measure terminal voltage of

the electrolytic capacity.

760µF:400WV × 3

After operation, turn off the

power breaker after 2

minutes 20 seconds passed,

and discharge the electro-

lytic capacitor by soldering

iron.

Check voltage between

motor phases.

•Is not winding between Q-

R‚ R-S, or Q-S opened

or short-circuited?

•Is not frame grounded with

Q, R, or S?

Summary

If fuse was blown, be sure to

check the electrolytic

capacitor and diode block.

(DB01)

•Connect discharge

resistance (approx. 100Ω,

40W) or soldering iron

(plug) between +, –

terminals of the electro-

lytic capacitor (760µF) of

C14 (with printed CAU-

TION HIGH VOLTAGE) on

P.C. board.

OK if 760µF →

DC280 to 380V

Remove CN300 while

pushing the part indicated

by an arrow because CN300

is a connector with lock.

→Resistance between

phases should be

approx. 55 to 77Ω

→Should be 10MΩ or

more.

Replace

outdoor

fan motor.

Remove connector

of compressor.

YES

Check 25A fuse

(Part No.F01).

Does outdoor

fan rotate?

Replace fuse.

Check

electrolytic

capacitor, diode

block (DB01),

etc.

Check

electrolytic

capacitor, diode

(DB01),

etc.

Remove connector

CN300 of outdoor fan

motor, and using a

tester, check resistance

value between every

phases at motor side.

Check

terminal voltage

of electrolytic

capacitor.

Discharging position

(Discharging period

10 seconds or more) Plug of

soldering

iron

– 76 –

Diagnosis/Process flowchart Item

Check

Operation

Contents

Check winding resistance

between phases of compres-

sor, and resistance between

outdoor frames by using a

tester.

•Is not grounded.

•Is not short-circuited

between windings.

•Winding is not opened.

Remove connector CN300 of

the outdoor fan motor, turn

on the power supply breaker,

and perform the operation.

(Stops though activation is

prompted.)

Check operation within 2

minutes 20 seconds after

activation stopped.

Replace control

board assembly.

Replace

control board. Replace

compressor.

Check

compressor

winding

resistance.

Summary

→OK if 10MΩ or more

→ OK if 0.51Ω → 0.57Ω

(Check by a digital tester.)







11-9. How to Check Simply the Main Parts

11-9-1. How to Check the P.C. Board (Indoor Unit)

(1) Operating precautions

1) When removing the front panel or the P.C. board, be sure to shut off the power supply breaker.

2) When removing the P.C. board, hold the edge of the P.C. board and do not apply force to the parts.

3) When connecting or disconnecting the connectors on the P.C. board, hold the whole housing. Do not pull

at the lead wire.

(2) Inspection procedures

1) When a P.C. board is judged to be defective, check for disconnection, burning, or discoloration of the

copper foil pattern or this P.C. board.

2) The P.C. board consists of the following 2 parts

a. Main P.C. board part :

DC power supply circuit (5V, 12V, 15V), Indoor fan motor control circuit, CPU and peripheral circuits,

buzzer, and Driving circuit of louver.

b. Indication unit of infrared ray receiving infrared ray receiving circuit, LED :

To check defect of the P.C. board, follow the procedure described below.

– 77 –

(3) Check procedures

Table 11-9-1

No.

Procedure

Turn off the power supply breaker

and remove the P.C. board

assembly from electronic parts

base. Remove the connecting

cables from the terminal block.

Remove the connector of the

motor and turn on the power

supply breaker. If OPERATION

indicator flashes (once per

second), it is not necessary to

check steps (1 to 3) in the right

next column.

Push [START/STOP] button once

to start the unit. (Do not set the

mode to On-Timer operation.)

Shorten the restart delay timer

and start unit.

Push [START/STOP] button once

to start the unit,

•Shorten the restart delay timer.

•Set the operation mode to

COOL.

•Set the fan speed level to

AUTO.

•Set the preset temperature

much lower than the room

temperature. (The unit (com-

pressor) operates continuously

in the above condition.)

If the above condition (No. 5) still

continues, start the unit in the

following condition.

•Set the operation mode to

HEAT.

•Set the preset temperature

much higher than room tem-

perature.

Connect the motor connector to

the motor and turn on the power

supply.

Start the unit the following

condition.

•Set the fan speed level to HIGH.

(The unit (compressor) operates

continuously in the above

condition in No. 5.)

Check points

Check whether or not the fuse (F01)

is blown.

Check power supply voltage :

1. Between No. 1 and No. 3 of CN23

(AC 220–240V)

2. Between and of C03

(DC 310–340V)

3. Between of C10 and output

side of IC08 (DC 15V)

4. Between 12V and GND

5. Between 5V and GND

Check power supply voltage :

1. Between CN21 and

No. 1 of CN23 (DC 15–60V)

Check whether or not all indicators

(OPERATION, TIMER, FILTER,

PURE) are lit for 3 seconds and they

return to normal 3 seconds later.

1. Check whether or not the com-

pressor operates.

2. Check whether or not the OP-

ERATION indicator flashes.

1. Check whether or not the com-

pressor operates.

2. Check whether or not the OP-

ERATION indicator flashes.

1. Check it is impossible to detect

the voltage (DC 15V) between 3

and 4 of the motor terminals.

2. The motor does not operate or

the fan motor does not rotate with

high speed.

(But it is possible to receive the

signal from the remote controller.)

3. The motor rotates but vibrates

strongly.

Causes

Impulse voltage was applied or the

indoor fan motor short-circuited.

1. The terminal block or the crossover

cable is connected wrongly.

2. The capacitor (C01), line filter

(L01), resistor (R05), or the diode

(DB01) is defective.

3. IC01, IC08 and T01 are defective.

4. IC01, IC08 and T01 are defective.

5. IC01, IC08, IC07 and T01 are

defective.

IC03 and IC04 are defective.

The indicators are defective or the

housing assembly (CN13) is defective.

1. The temperature of the indoor heat

exchanger is extremely low.

2. The connection of the heat ex-

changer sensor is loose.

(The connector is disconnected.)

(CN01)

3. The heat exchanger sensor and the

P.C. board are defective.

(Refer to Table 11-4-1.)

4. The main P.C. board is defective.

1. The temperature of the indoor heat

exchanger is extremely high.

2. The connection of the heat ex-

changer sensor short-circuited.

(CN01)

3. The heat exchanger sensor and the

P.C. board are defective.

(Refer to Table 11-4-1.)

4. The main P.C. board is defective

1. The indoor fan motor is defective.

(Protected operation of P.C. board.)

2. The P.C. board is defective.

3. The connection of the motor

connector is loose.

– 78 –

11-9-2. P.C. Board Layout

GND

+12V

+5V

100

00102030 4050

Resistance value (k )

Temperature (˚C)

TD : Discharge temp. sensor

TA : Room temp. sensor

TC : Heat exchanger temp. sensor

TO : Outdoor temp. sensor

TE : Outdoor heat exchanger temp. sensor

TS : Suction temp. sensor

TA, TC, TO, TE, TS

[1] Sensor characteristic table

– 79 –

11-9-3. Indoor Unit (Other Parts)

11-9-4. Outdoor Unit

No.

Part name

Room temp. (TA) sensor

Heat exchanger (TC) sensor

Checking procedure

Disconnect the connector and measure the resistance value with tester.

(Normal temp.)

No.

Part name

Compressor

(Model : DA111A1F-20F1)

Checking procedure

Measure the resistance value of each winding by using the tester.

Position

Red - White

White - Black

Black - Red

Resistance value

0.88 to 0.98Ω

Measure the resistance value of winding by using the tester.

Red

White Blac

Red

White Blac

Measure the resistance value of winding by using the tester.

Resistance value

1435 ± 144Ω

Under 20°C

Measure the resistance value of winding by using the tester.

COM

254

BR BL

Position

Red - White

White - Orange

Brown- Yellow

Brown- Blue

Resistance value

42 to 50kΩ

Temperature

Sensor

TA, TC (kΩ)

10°C 20°C 25°C 30°C 40°C

20.7 12.6 10.0 7.9 4.5

White

Yellow

Yellow 5

Refer to 11-5-1. (5).

Measure the resistance value of each winding coil by using the tester.

(Under normal temp. 25°C)

Position

1 to 2

1 to 3

1 to 4

1 to 5

Resistance value

380 ± 40Ω

Refer to 11-5-1. (3) and (4).

Under 20°C

Disconnect the connector, and measure resistance value with the tester.

(Normal temperature)

Outdoor temperature sensor

(TO), discharge temperature

sensor (TD), suction

temperature sensor (TS),

outdoor heat exchanger

temperature sensor (TE)

Temperature

Sensor

TD (kW)

TO,TS,TE (kW)

10°C 20°C 25°C 30°C 40°C 50°C

100 64 50 41 27 18

20.7 12.6 10.0 7.9 4.5 —

Remote controller

Louver motor

MP24Z

4Indoor fan motor

Under 20°C

Position

Red - White

White - Black

Black- Red

Resistance value

17 to 25kΩ

Outdoor fan motor

(Model : ICF-140-43-4R)

4-way valve coil

(Model : VHV)

Pulse motor valve coil

(Model : CAM-MD12TF-6)

– 80 –

11-9-5. Checking Method for Each Part

No.

Part name

Electrolytic capacitor

(For boost, smoothing)

Checking procedure

1. Turn OFF the power supply breaker.

2. Discharge all three capacitors completely.

3. Check that safety valve at the bottom of capacitor is not broken.

4. Check that vessel is not swollen or exploded.

5. Check that electrolytic liquid does not blow off.

6. Check that the normal charging characteristics are shown in continuity test by

the tester.

MCC-5009

Soldered

surface

Heat sink IGBT side

C12 C13 C14

Case that product is good

Pointer swings once, and returns

slowly. When performing test

once again under another

polarity, the pointer should return.

C12, C13, C14 → 760µF/400V

Resistance value

in good product

∞

Tester rod

+–

–

~~~

+–~

123

(DBO1)

–

10 to 20 Ω when the multimeter probe

is reversed

2Diode block 1. Turn OFF the power supply breaker.

2. Completely discharge the four electrolytic capacitors.

3. Remove the diode block from the PCB (which is soldered in place).

4. Use a multimeter with a pointer to test the continuity, and check that the

diode block has the proper rectification characteristics.

– 81 –

11-10. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad

1. Symptom

•Outdoor fan motor does not rotate.

•Outdoor fan motor stops within several tens seconds though it started rotating.

•Outdoor fan motor rotates or does not rotate according to the position where the fan stopped, etc.

Remote controller check code “02 : Outdoor block, 1A : Outdoor fan drive system error”

2. Cause

The following causes are considered when the outdoor fan motor does not normally rotate.

1) Mechanical lock of the outdoor fan motor

2) Winding failure of the outdoor fan motor

3) Position-detect circuit failure inside of the outdoor fan motor

4) Motor drive circuit failure of the outdoor P.C. board

3. How to simply judge whether outdoor fan motor is good or bad

NOTE :

However, GND circuit error inside of the motor may be accepted in some cases when the above check is

performed.

When the fan motor does not become normal even if P.C. board is replaced, replace the outdoor fan motor.

If the resistance value between

1 (Red lead) – 2 (White lead)

2 (White lead) – 3 (Black lead)

3 (Black lead) – 1 (Red lead)

of the connector

(CN300 : Motor winding)

is 17 to 25Ω, it is normal.

Turn OFF the breaker.

Fan motor is normal.

Does the fan rotate without trouble

when rotating it with hands?

Disconnect two connectors (CN300) of the

outdoor fan motor from the outdoor P.C. board.

(Outdoor P.C. board error)

Fan motor error

YES

CN300

– 82 –

12. HOW TO REPLACE THE MAIN PARTS

WARNING

• Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with

the repairs.

Electric shocks may occur if the power plug is not disconnected.

• After the repairs have been completed (after the front panel and cabinet have been installed), perform a

test run, and check for smoking, unusual sounds and other abnormalities.

If this check is omitted, a fire and/or electric shocks may occur.

Before proceeding with the test run, install the front panel and cabinet.

• Ensure that the following steps are taken when doing repairs on the refrigerating cycle.

1. Do not allow any naked flames in the surrounding area.

If a gas stove or other appliance is being used, extinguish the flames before proceeding.

If the flames are not extinguished, they may ignite any oil mixed with the refrigerant gas.

2. Do not use welding equipment in an airtight room.

Carbon monoxide poisoning may result if the room is not properly ventilated.

3. Do not bring welding equipment near flammable objects.

Flames from the equipment may cause the flammable objects to catch fire.

•If keeping the power on is absolutely unavoidable while doing a job such as inspecting the cir-

cuitry, wear rubber gloves to avoid contact with the live parts.

Electric shocks may be received if the live parts are touched.

High-voltage circuits are contained inside this unit.

Proceed very carefully when conducting checks since directly touching the parts on the control circuit

board may result in electric shocks.

12-1. Indoor Unit

No.



Part name

Front panel

Procedures

1) Stop operation of the air conditioner and

turn off its main power supply.

2) Open the air inlet grille, push the arm

toward the outside, and remove the grille.

3) Remove the left and right air filters, and

remove the electric dust collector.

Remarks

– 83 –

No.



Part name

Front panel

Procedures

4) Press “ ” part under the front panel

and remove hooks of the front panel from

the installation plate.

Remarks

Pull here

Press here

Press

Front panel

Installation plate

Holder

Protrusion

Electric dust

collector

Holder

Protrusion

Electric dust

collector

Holder

Protrusion

Electric dust

collector

Holder

Protrusion

Electric dust

collector

5) Remove the front panel fixing screws.

(2 pcs.)

6) Press the electric parts box with the right

thumb while pulling the both sides of the

front panel toward you.

1) Press three center positions and two lower center positions of the air outlet, and

then hang the hanging hooks (4 pcs.) at the top side of the front panel to the rear

plate.

2) Insert the electric dust collector and left and right air filters.

Press in the electric dust collector until the protrusions on both sides are completely

inserted into the holders.

If installation is incomplete, the FILTER indicator (orange) may light.

3) Tighten two screws.

•Incomplete hanging or incomplete pressing may cause a dewdrops or generation

of a fluttering sound.

– 84 –

Air ionizer

Connector

Drain guide

Press the

claw here

Press the

claw here

Pull here

Screw

No.



Part name

High voltage

generator

Procedures

1) Follow to the procedure in the item .

2) Remove the drain guide.

3) To remove the air ionizer from the back body,

pull it toward you while pressing down on its left

and right claws.

Disconnect the two leads (black) connected to

the air ionizer from where they are fitted into

the other components.

(Caution: do not remove the Faston.)

4) Disconnect the connectors of the high-voltage

generator, and disconnect the four leads from

where they are fitted into the other compo-

nents.

5) Remove the fixing screw which secures the

high voltage generator, and remove the high

voltage generator from the evaporator.

Remarks

1) Insert the high voltage generator straight into

the evaporator, and secure it using the fixing

screw.

Claw

Check whether the

completely inserted.

2) Pass the leads of the high voltage generator

through the area designated and insert them

into its connectors.

3) Attach the air ionizer to the back body, and

pass the two leads (black) through the area

designated on the electric parts box assembly.

4) Attach the drain guide.

– 85 –

No.



Part name

Electric parts

box assembly

Procedures

1) Follow the procedure up to 4) in  above.

2) Remove screw of earth lead attached to the

end plate of the evaporator.

3) Remove the lead wire cover, and remove

connector (5P) for the fan motor and connec-

tor (5P) for the louver motor from the electric

parts box assembly.

4) Pull out TC sensor from sensor holder of the

evaporator.

Remarks

Fixing screw

TC sensor

Louver moter

connector

Fan motor

connector

Screw

Press the

drain pan

Pull the display

unit toward you

5) Disengage the two claws at the top of the

display unit.

(They can be easily disengaged by pressing

the drain pan above the claws and at the

same time pulling the display unit toward you.)

6) Remove the fixing screw that secures the

electric parts box assembly, and remove the

assembly.

1) Hook the top part of the electric parts box

assembly onto the claws on the back body,

and secure it using the fixing screw.

Now attach the display unit. Connect the

connectors for the fan motor and louver motor.

2) Secure the grounding wire using the fixing

screw. Insert the TC sensor into the sensor

holder.

* Be absolutely sure to loop the grounding

wire and TC sensor leads once at the

bottom.

– 86 –

No.



Part name

Horizontal louver

Procedures

1) Remove shaft of the horizontal

louver from the back body.

(First remove the left shaft, and

then remove other shafts while

sliding the horizontal louver

leftward.)

Evaporator

(Heat exchanger) 1) Follow to the procedure in the item .

2) Remove the pipe holder from the rear side of the main unit.

3) Remove two fixing screws at the left side of the end plate of the heat exchanger.

Slide the horizontal

louver leftward

Remarks

Disengage the claw

Pipe holder

Screw

Heat exchanger

fixing holder

Screw

4) Remove the heat exchanger fixing holder

by removing the two fixing screws used to

secure it.

5) Remove right side of the end plate from

two fixing ribs while sliding slightly the

heat exchanger rightward.

– 87 –

Screw

Bearing

base

Screw

Raise the left side

Remove in this direction

Bearing base

Bearing

Drain pipe

Bearing base

Drain pipe

No.



Part name

Bearing

Procedures

1) Follow to the procedure in the items .

2) Remove the two fixing screws used to secure

the left edge panel of the heat exchanger, and

remove the two screws used to secure the

bearing base.

3) Raise the left side of the heat exchanger

slightly, and remove the bearing base.

•If the bearing is out from the housing, push it

into the specified position and then incorporate

it in the main body.

•After assembling the bearing base, check that it

is fitted into the stepped part of the drain pipe.

Remarks

– 88 –

No.



Part name

Fan motor

Procedures

1) Follow to the procedure in the item .

2) Loosen the set screw of the cross flow fan.

3) Remove two fixing screws of the motor band

(Right), and then remove the motor band

(Right).

4) Pull the fan motor outward.

In assembling work, install the fan motor as

follows.

•When assembling the fan motor, the fan

motor must be installed in such a way that

the fan motor leads will be taken out is

positioned at the bottom front.

•After assembling the two hooking claws of

the motor band (right) into the main body,

position the fan motor, insert it, and then

secure the motor band (right) using the two

fixing screws.

Remarks

1) Follow to the procedure in the item .

2) Remove the heat exchanger fixing holder by

removing the two fixing screws used to

secure it.

3) Loosen the set screw of the cross flow fan.

4) Lift the left side of the heat exchanger, and

pull out the cross flow fan.

Cross flow fan



Set screw

Screw

sing

Secure using

screw

the fixing screw

using

Secure using

g screw

the fixing screw

nd (Right)

Motor band (Right)

n motor l

eads

Raise the

left side

Pull out here

– 89 –

No.



Part name

Cross flow fan

Procedures

1) At assembling work of the bearing base,

check that the drain pipe is surely incorpo-

rated in the back body.

(Otherwise, water leak is caused.)

2) To incorporate the fan motor, remove the fan

motor rubber (at shaft core side), incorporate

the motor into the position in the following

figure, and then install the fan motor.

Remarks

Drain pipe

U groove

Bearing base

70.5mm

Joint

•Install the cross flow fan so that the right

end of the 1st joint from the right of the

cross flow fan is set keeping 70.5 mm from

wall of rear plate of the main unit.

•Holding the set screw, install the cross flow

fan so that U-groove of the fan motor comes

to the mounting hole of the set screw.

•Perform positioning of the fan motor as

follows:

•When assembling the fan motor, the fan

motor must be installed in such a way that

the fan motor leads will be taken out is

positioned at the bottom front.

•After assembling the two hooking claws of

the motor band (right) into the main body,

position the fan motor, insert it, and then

secure the motor band (right) using the two

fixing screws.

– 90 –

No.



Part name

Common procedure

Procedure

1) Turn the power supply off to stop the

operation of air-conditioner.

2) Remove the front panel.

•Remove the 2 fixing screws.

3) Remove the electrical part base.

Remarks

Replace terminal block,

microcomputer ass’y and the

P.C. board ass’y.

12-2. Microcomputer

<P.C. board layout>

R05 L01 C01 CN23 FUSE R04 R01 CN10

J04

IC03C20IC01

T01

C03

DB01

– 91 –

12-3. Outdoor Unit

No.



Part name

Common

procedure

Procedure

1. Detachment

NOTE

Wear gloves for this job.

Otherwise, you may injure your

hands on the parts, etc.

1) Stop operation of the air conditioner,

and turn off the main switch of the

breaker for air conditioner.

2) Remove the valve cover.

(ST1TØ4 × 8L 1 pc.)

•After removing screw, remove the

valve cover pulling it downward.

3) Remove wiring cover (ST1TØ4 × 8L

2 pcs.), and then remove connecting

cable.

4) Remove the upper cabinet.

(ST1TØ4 × 8L 5 pcs.)

•After removing screws, remove the

upper cabinet pulling it upward.

2. Attachment

1) Attach the water-proof cover.

NOTE

The water-proof cover must be

attached without fail in order to

prevent rain water, etc. from entering

inside the indoor unit.

2) Attach the upper cabinet.

(ST1TØ4 × 8L 5 pcs.)

3) Perform cabling of connecting cable,

and attach the wiring cover.

•Place the wiring cover over the

opening used to work on the con-

necting wires of the side cabinet,

and secure it using the two fixing

screws (ST1TØ4 × 8L 2 pcs.).

At this point, the top cushion of the

wiring cover must be on the inside of

the opening.

4) Attach the valve cover.

(ST1TØ4 × 8L 1 pc.)

•Insert the upper part into the square

hole of the side cabinet, set hook

claws of the valve cover to square

holes (at three positions) of the main

unit, and attach it pushing upward.

Remarks

Upper cabinet

Water

proof

cover

Valve cover

Insert the bent part

into the rear panel

of th

inv

Brin

into contact

against these parts

How to mount the water-proof cover

Ali

n the stitch line

with the top ed

of the front cabinet

Bend downward, and ali

with th

ace

of the front cabinet

– 92 –

No.



Part name

Front cabinet

Procedure

1. Detachment

1) Perform step 1 in .

2) Remove the fixing screws (ST1TØ4 × 8L

2 pcs.) used to secure the front cabinet

and inverter cover, the screws (ST1TØ4

× 8L 3 pcs.) used to secure the front

cabinet at the bottom, and the fixing

screws (ST1TØ4 × 8L 2 pcs.) used to

secure the motor base.

•The front cabinet is fitted into the side

cabinet (left) at the front left side so

pull up the top of the front cabinet to

remove it.

2. Attachment

1) Insert the claw on the front left side into

the side cabinet (left).

2) Hook the bottom part of the front right

side onto the concave section of the

bottom plate. Insert the claw of the side

cabinet (right) into the square hole in the

front cabinet.

3) Return the screws that were removed

above to their original positions, and

attach them.the main unit, and attach it

pushing upward.

Remarks

Square

hole

Claw

Front cabinet

Concave section

– 93 –

No.



Part name

Inverter

assembly

Procedure

1) Perform work of item 1 in .

2) Remove screw (ST1TØ4 × 8L 2 pcs.) of the

upper part of the front cabinet.

•If removing the inverter cover in this

condition, P.C. board can be checked.

•If there is no space above the unit, perform

work of 1 in .

Be careful to check the inverter because

high-voltage circuit is incorporated in it.

3) Perform discharging by connecting ,

polarity by discharging resistance (approx.

100Ω40W) or plug of soldering iron to ,

terminals a of the C14 (printed “CAUTION

HIGH VOLTAGE” is attached.) electrolytic

capacitor (760µF) on P.C. board.

Be careful to discharge the capacitor

because the electrolytic capacitor

cannot naturally discharge and voltage

remains according to trouble type in

some cases.

NOTE

This capacitor is one with mass capacity.

Therefore, it is dangerous that a large

spark generates if short-circuiting

between , polarity with screwdriver,

etc. for discharging.

4) Remove screw (ST1TØ4 × 8L 2 pcs.) fixing

the main body and the inverter box.

5) Remove the front cabinet by performing step

1 in , and remove the fixing screws

(ST1TØ4 × 8L) for securing the main body

and inverter box.

6) Remove various lead wires from the holder

at upper part of the inverter box.

7) Pull the inverter box upward.

8) Disconnect connectors of various lead wires.

Requirement

As each connector has a lock mecha-

nism, avoid to remove the connector by

holding the lead wire, but by holding the

connector.

Remarks

eac

h l

eads

through the hole

Put the compresso

leads through

the hole

Inverter cover P. C. board

(Soldered surface)

Discharging position

(Discharging period

10 seconds or more)

Plug of

soldering

iron

(

STIT-4X8MSZN

)

rmin

The connector is one

with lock, so remove

it while pushing the

part indicated by an

arrow.

Be sure to remove the connector by

holding the connector, not by pulling

the lead wire.

– 94 –

No.



Part name

Control board

assembly

Procedure

1. Disconnect the leads and connectors connected to

the other parts from the control board assembly.

1) Leads

•3 leads (black, white, orange) connected to

terminal block.

•Lead connected to compressor :

Disconnect the connector (3P).

•Lead connected to reactor :

Disconnect the two connectors (2P).

2) Connectors (×8)

CN300 : Outdoor fan motor (3P: white)*

(See NOTE)

CN701 : 4-way valve (2P: yellow)*

CN600 : TE sensor (2P: white)*

CN700 : PMW (6P: white)

CN603 : TS sensor (3P: white)*

CN601 :TD sensor (3P: white)*

CN602 : TO sensor (2P: white)

NOTE

These connectors have a disconnect prevention

mechanism: as such, the lock on their housing

must be released before they are disconnected.

2. Remove the control board assembly from the P.C.

board base. (Remove the heat sink and control

board assembly while keeping them screwed

together.)

NOTE

Disengage the four claws of the P.C. board base,

hold the heat sink, and lift to remove it.

3. Remove the two fixing screws used to secure the

heat sink and control board assembly.

4. Mount the new control board assembly.

NOTE

When mounting the new control board assembly,

ensure that the P.C. board is inserted properly

into the P.C. board support groove.

Remarks

CN300, CN701, CN600 and

CN603 are connectors with

locking mechanisms: as such,

to disconnect them, they must

be pressed in the direction of

the arrow while pulling them

out.

P.C. board base

P.C. board

CN700 CN602 CN300

CN701

CN603

CN601 CN600

– 95 –

No.



Part name

Side cabinet

Procedure

1. Side cabinet (right)

1) Perform step 1 in  and all the steps in

.

2) Remove the fixing screw (ST1TØ4 × 8L

5 pcs.) used for securing the side

cabinet to the bottom plate and valve

fixing panel.

2. Side cabinet (left)

1) Perform step 1 in .

2) Remove the fixing screw (ST1TØ4 × 8L

1 pcs.) used to secure the side cabinet

(left) onto the heat exchanger.

3) Remove the fixing screw (ST1TØ4 × 8L

2 pc.) used for securing the side cabinet

to the bottom plate and heat exchanger.

Remarks

The back body section is hooked

onto the bottom plate here.

Hook the claw onto

the bottom plate here.

Detail A Detail B Detail C

1) Perform work of item 1 of  and .

2) Remove the flange nut fixing the fan motor

and the propeller.

•Flange nut is loosened by turning clock-

wise. (To tighten the flange nut, turn

counterclockwise.)

3) Remove the propeller fan.

4) Disconnect the connector for fan motor

from the inverter.

5) Remove the fixing screws (2 pc.) holding

by hands so that the fan motor does not

fall.

* Precautions when assembling the fan

motor

Tighten the flange nut using a tightening

torque of 4.9 N•m.

Fan motor

Propeller fan

Flange nut

Fan motor

– 96 –

No.



Part name

Compressor

Procedure

1) Perform work of item 1 of  and , , ,

.

2) Extract refrigerant gas.

3) Remove the partition board.

(ST1TØ4 × 8L 3 pcs.)

4) Remove the sound-insulation material.

5) Remove terminal cover of the compressor,

and disconnect lead wire of the compressor

from the terminal.

6) Remove pipe connected to the compressor

with a burner.

•Take care to keep the 4-way valve away

from naked flames. (Otherwise, it may

malfunction.)

7) Remove the fixing screw of the bottom plate

and heat exchanger. (ST1TØ4 × 8L 1 pc.)

8) Remove the fixing screw of the bottom plate

and valve fixing plate.

(ST1TØ4 × 8L 1 pc.)

9) Pull upward the refrigeration cycle.

10) Remove BOLT (3 pcs.) fixing the compres-

sor to the bottom plate.

*Precautions when assembling the com-

pressor.

Tighten the compressor bolts using a

tightening torque of 4.9 N•m.

Remarks

Reactor 1) Perform work of item 1 of , and .

2) Remove screws fixing the reactor.

(ST1TØ4 × 8L 4 pcs.)

Valve

fixing

plate

Compressor

Partition

board

Reactor

– 97 –

No.



Part name

Electronic

expansion valve

coil

Procedure

1. Detachment

1) Perform step 1 in , all the steps in 

and 1 in .

2) Remove the coil by pulling it up from the

electronic control valve body.

2. Attachment

1) When assembling the coil into the valve

body, ensure that the coil anti-turn lock is

installed properly in the pipe.

When handling the parts, do not pull the leads.

When removing the coil from the valve body, use

your hand to secure the body in order to prevent

the pipe from being bent out of shape.

Remarks

Hooking claw

Minus screwdriver

Coil inserting

position

Coil anti-turn

lock position

Coil

anti-turn

lock

Fan guard 1. Detachment

1) Perform work of item 1 of .

2) Remove the front cabinet, and put it down

so that fan guard side directs downward.

Perform work on a corrugated cardboard,

cloth, etc. to prevent flaw to the product.

3) Remove the hooking claws by pushing minus

screwdriver according to the arrow mark in

the right figure, and remove the fan guard.

2. Attachment

1) Insert claws of the fan guard in the holes

of the front cabinet. Push the hooking

claws (9 positions) by hands and fix the

claws.

All the attaching works have completed.

Check that all the hooking claws are fixed

to the specified positions.

– 98 –

No.

Part name Procedure Remarks

TE sensor (outdoor heat exchanging temperature sensor)

• Attachment

With the leads pointing downward and the sensor leads

pointing in the direction shown in the figure, install the sensor

onto the straight pipe part of the condenser output pipe.

CAUTION

During the installation work (and on its completion), take care not to damage the coverings of

the sensor leads on the edges of the metal plates or other parts. It is dangerous for these

coverings to be damaged since damage may cause electric shocks and/or a fire.

CAUTION

After replacing the parts, check whether the positions where the sensors were installed are the

proper positions as instructed. The product will not be controlled properly and trouble will result

if the sensors have not been installed in their proper positions.

Detail B

Detail A

Arrow D

Detail C

• Shown in the above figure is the

model 13GAVP-E.

• The sensor mounting positions

in the model 10GAVP-E are all

the same with the sole excep-

tion of the TE sensor. Refer to

the figure shown on the left.

Detail C for 13, 16GAVP-E

Detail C for 10GAVP-E

TS sensor (Suction pipe temperature sensor)

• Attachment

With its leads pointing downward, point the sensor in the

direction of the packed valve, and install it onto the straight

pipe part of the suction pipe.

TD sensor (Discharge pipe temperature sensor)

• Attachment

With its leads pointed downward, install the sensor onto the

vertical straight pipe part of the discharge pipe.

TO sensor (Outside air temperature sensor)

• Attachment

Insert the outdoor air temperature sensor into the holder, and

install the holder onto the heat exchanger.

Detail B

TS sensor Detail A

TD sensor Arrow D

TO sensor

– 99 –

No.

Part name

Replacement of

temperature sensor

for servicing only

Common service

parts of sensor TO,

TS, TE, TD

Procedure

1) Cut the sensor 100 mm longer than old

one.

2) Cut the protective tube after pulling out

it (200 mm).

3) Move the protective tube toward the

thermal sensor side and tear the tip of

lead wire in two then strip the covering

part.

4) Pass the stripped part through the

thermal constringent tube.

5) Cut the old sensor 100 mm length on

the connector side, and recycle that

connector.

6) Tear the lead wire in two on the con-

nector side and strip the covering part.

7) Twist the leads on the connector and

sensor sides, and solder them.

8) Move the thermal constringent tubes

toward the soldered parts and heat

them with the dryer and constring

them.

9) Wind the attached color tape round the

both terminals of the protective tube

when colored protective tube is used.

10) Fix the sensor again.

Remarks

Parts name

Sensor

Sensor Spring (A)

Sensor Spring (B)

Thermal constringent tube

Color tape

Terminal

Q'ty

Cutting here

Soldered part

Dryer

Winding the color tape

100

200

Connector

Thermal

sensor part

Thermal

constringent tube

100

NOTE

1) Store the joint part of the sensor and the connector in the electric parts

box.

2) Never joint them near the thermal sensor part. Otherwise it would cause

insulation inferiority because of dew drops.

3) When replacing the sensor using the colored protective tube, wind the

color tape matching the color of that tube.

These are parts for

servicing sensors.

Please check that

the accessories

shown in the right

table are packed.

Remarks

Length : 3m

For spare

Including one spare

9 colors

– 100 –

MCC-5009

– 101 –

Location

Part Description

No. No.

201 43005633 Panel Ass’y, Front

202 43005610 Grille, Air Inlet

203 4301V052 Plate, Fix

204 43080512 Filter, Air, Right

205 43080521 Filter, Air, Left

206 43009675 Louver, Horizontal

207 43009682 Louver, Vertical

209 4302C067 Motor, Fan

210 4302C063 Motor, Louver

211 4306A024 Cord, Motor, Louver

212 43039363 Band, Motor, Left

213 43039321 Base, Bearing

214 43020346 Fan, Cross Flow

215 43039314 Band, Motor

216 43020253 Bearing

217 4301V028 Holder, Pipe

218 43049701 Pipe, Shield (B16GKVP-E)

219 43049698 Pipe, Shield

(B10GKVP-E, B13GKVP-E)

221 43047671 Pipe, Outlet

(B10GKVP-E, B13GKVP-E)

222 43047672 Pipe, Outlet (B16GKVP-E)

Location

Part Description

No. No.

223 43049674 Spring, Suction

(B16GKVP-E)

224 43047673 Pipe, Inlet

225 43044803 Evaporator

(B10GKVP-E, B13GKVP-E)

226 43044804 Evaporator (B16GKVP-E)

227 43039324 Guide, Drain

228 43049728 Guide, Drain, Left

229 43019904 Holder, Sensor

230 43049770 Holder, Evaporator, Right

232 43062256 Cover, Terminal

233 43062247 Cover, Lead

234 43082293 Plate, Installation

235 4306S577 Remote Controller

236 43083071 Holder, Remote, Comtroller

238 43003307 Body Ass’y, Back

239 43070188 Hose, Drain

240 43079268 Cap, Drain

245 43080516 Electrical Air Purifying Filter

246 43080527 Generator Ass’y, HV

247 4308N732 Owner’s Manual

13. EXPLODED VIEWS AND PARTS LIST

13-1. Indoor Unit (1)

∗The parts in the following parts list are conformed to RoHS.

Therefore be sure to use the following parts for repairing and replacing.

233

232

239

207

218, 219

212

230

223

210 211

215

209

217

234

240

238

214

225, 226

213

216

247

235

236

201 203 221, 222, 224

246

227

228

245

204

205

202

206

229

– 102 –

Location

Part Description

No. No.

401 4306A123 Terminal Block, 2P

402 43062263 Cover, E-Parts

403 43050425 Sensor, TC (F6)

404 43050426 Sensor, TA

405 4306S728 P.C. Board Ass’y, WRS-LED

406 43051346 SW-Micro Ass’y

Location

Part Description

No. No.

407 4306S709 P.C. Board Ass’y

(B10GKVP-E)

408 4306S710 P.C. Board Ass’y

(B13GKVP-E)

409 4306S711 P.C. Board Ass’y

(B16GKVP-E)

410 43067115 Clamp, Cord

Indoor Unit (2)

406

405

401

402

403

404

407, 408, 409

410

∗The parts in the following parts list are conformed to RoHS.

Therefore be sure to use the following parts for repairing and replacing.

– 103 –

13-2. Outdoor Unit

735

745 46 10

398

28, 29

30, 31

14, 15, 17, 18, 20

21, 23, 24, 25, 26

13, 16, 19, 22

11, 12

– 104 –

Location

Part Description

No.

1 43005657 Cabinet, Front

2 43005642 Cabinet, Upper

3 43005658 Cabinet, Side, Right

4 43005634 Cabinet, Side, Left

5 4301V035 Guard, Fan

6 4301V053 Guard, Fin

7 43042489 Base Ass’y

8 43119471 Cover, Valve, Packed

9 43062262 Cover, Wiring Ass’y

10 43041634 Compressor,

DA111A1F-20F1, RoHS

11 43043749 Condenser Ass’y

(10GAVP-E)

12 43043751 Condenser Ass’y

(13GAVP-E, 16GAVP-E)

13 37546845 Valve, Packed, 6.35

14 43046442 Valve, Packed, 9.52

(10GAVP-E, 13GAVP-E)

15 37546846 Valve, Packed, 12.7

(16GAVP-E)

16 43147196 Bonnet, 1/4 IN

17 43047401 Bonnet, 3/8 IN

(10GAVP-E, 13GAVP-E)

18 43147195 Bonnet, 1/2 IN (16GAVP-E)

19 43047676 Nut, Flare, 6.35

20 43047677 Nut, Flare, 9.52

(10GAVP-E, 13GAVP-E)

21 43047678 Nut, Flare, 12.7 (16GAVP-E)

22 43047679 Cap, Valve, Packed, 6.35

23 43047680 Cap, Valve, Packed, 9.52

(10GAVP-E, 13GAVP-E)

Location

Part Description

No.

24 43047681 Cap, Valve, Packed, 12.7

(16GAVP-E)

25 43047674 Cap, Charge, Port

(10GAVP-E, 13GAVP-E)

26 43047675 Cap, Charge, Port

(16GAVP-E)

27 44246239 Tube, Capillary, I.D 1.2

(13GAVP-E, 16GAVP-E)

28 43046444 Valve, 4-Way,

STF-0108Z, RoHS

29 43046443 Coil, 4-Way valve

30 37546848 Valve, Pulse, Motor,

CAM-B22YGTF-3

31 37546849 Coil, PMV, CAM-MD12TF-6

32 43058277 Reactor

33 4302C068 Motor, Fan, ICF-140-43-4R

34 43020329 Fan, Propeller, PJ421

35 43047669 Nut, Flange

36 43039392 Base, Motor Ass’y

37 43004233 Plate, Partition

38 4301V064 Plate, Fix, Valve, Packed

39 43032441 Nipple, Drain

40 43089160 Cap, Waterproof

41 4301P703 Mark, TOSHIBA

42 4301P702 Mark, DAISEIKAI

43 43049749 Rubber, Cushion

44 43062176 Sleeve, Flag

45 43063321 Holder, Sensor (TD)

46 43063322 Holder, Sensor (TS)

47 43063325 Holder, Sensor (TE)

48 43063339 Holder, Sensor (TO)

∗The parts in the following parts list are conformed to RoHS.

Therefore be sure to use the following parts for repairing and replacing.

– 105 –

Location

Part Description

No.

701 43050422 Sensor, TE

702 43050423 Sensor, TS

703 43050427 Sensor, TO

704 43062228 Base, P.C. board

Location

Part Description

No.

705 43160566 Terminal Block, 6P

706 43050430 Sensor, TD

707 4306S737 P.C. board Ass’y, MCC5009

13-3. P.C. Board Layout

704 Base, P.C. Board

707 P.C. Board Ass’y

705 Terminal (6P)

706 Sensor, TD (Ø4)

701 Sensor, TE

702 Sensor, TS

703 Sensor, TO

∗The parts in the following parts list are conformed to RoHS.

Therefore be sure to use the following parts for repairing and replacing.

Appendix-1

Appendix

No.

Cord Heater Installation Work

Applicable Models: RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

1. Required parts for installation work (Recommendation)

The above products conform to RoHS (2002/95/EC). Therefore when procuring and using the following recom-

mended parts at local site, it is recommended to confirm each part conforms to RoHS before use.

Remarks

Procured locally

Specifications/Vendor

Drain line heaters CSC2 (1.5m, 40W/m) by Flexelec com.

(Please go to the following URL.)

http://www.flexelec.com

US-622AXRLQE by ASAHI KEIKI

Operating temperature: on 4 ± 4°C, off 15 ± 3°C

A thermostat holder is incorporated with a thermostat in the package.

(Please go to the following URL.)

http://www.asahikeiki.co.jp/product/product.html

On self-responsibility, you can use a product manufactured by other

company (For example, Texas Instruments) if its characteristics are

equivalent to those of ASAHI KEIKI. However, when the shape of the

thermostat holder is different from that of ASAHI KEIKI, apply some

treatment to No.14 thermostat fixing plate and then fix the holder.

ES3-5000, 250V / 5A by NAGASAWA Electric Co.

(Please go to the following URL.)

http://www.nagasawa-el.co.jp/

On self-responsibility, you can use a product manufactured by other

company if its characteristics are equivalent to those of NAGASAWA

Electric Co.

GM1H-02 by NAGASAWA Electric Co.

(Please go to the following URL.)

http://www.nagasawa-el.co.jp/

On self-responsibility, you can use a product manufactured by other

company if its characteristics are equivalent to those of NAGASAWA

Electric Co.

Use heat-resistance, weatherproof and non-hydrolytic type.

Material: 4-fluorinated ethylene copolymer

Harness diameter: Ø5.9

Use equivalence with the above specifications.

11 pieces are used to fix the cord heater to the outdoor unit base plate.

One piece is used to fix the power cord to the thermostat fixing plate .

One piece is used to fix the power cord to the terminal fixing plate.

Use heat-resistance, weatherproof and non-hydrolytic type.

Material: 4-fluorinated ethylene copolymer

Harness diameter: Ø9.1

Use equivalence with the above specifications.

One piece is used to fix the cord heater to the outdoor unit base plate.

Self-tapping screw type-B Ø4 × 6mm, truss head, stainless

These screws are used to fix the cord heater to the outdoor unit base

plate with P-shape clamp.

Self-tapping screw type-B Ø4 × 8mm, truss head, stainless

Two screws are used to fix the thermostat fixing plate to the side cabinet (R).

One screw is used to fix the power cord to the thermostat fixing plate.

One screw is used to fix the power cord to the terminal fixing plate.

Self-tapping screw type-B Ø3.5 × 6mm, pan head

These screws are used to fix the thermostat to the thermostat fixing

plate with the thermostat holder.

#250 They are used for the connecting part to the thermostat.

UL sleeve for #250

Use the most appropriate connector with the power cord diameter.

Q’ty

Part name

Cord heater

Thermostat

Fuse

Fuse holder

P-shape

clamp

P-shape

clamp

Screw

Faston

Sleeve for

Faston

Close-end

connector

Appendix

Appendix-2

No. RemarksSpecifications/VendorQ’tyPart name

NOTE: The parts on the above table are recommended parts.

Power cord

Thermostat

fixing plate

PVC tube

Shield tube

Bundling tie

2-cores x 0.75mm² or more, H05RN-F

Material: SGCC-Z08, Board thickness: 0.8t

Inside diameter Ø8 x outside diameter Ø11 x 70 mm

Inside diameter Ø18 x outside diameter Ø26 x 70 mm

Material: Polyethylene foam

Bundling tie for securing the wires

Material: 6/6 nylon

Procured locally

(Drawing attached)

Procured locally

Usage

It is used for disassembling and assembling of each cabinet.

It is used for disassembling and assembling of compressor fixing nuts.

It is used to make the additional holes on the base or the side cabinet

(R).

It is used to process the side cabinet (L).

2. Required tools for installation work

No.

Part name

Plus screwdriver

Wrench

Motor drill

Faston crimping tool

Close-end connec-

tor crimping tool

Cutting plier

Stripper

Cutter knife

Insulation tape

Metal-cutting shears

Specifications

Drill diameter:

Ø3.2 and Ø5.0

Fixing jig for #250

Appendix-3

Appendix

3. Cord heater installation wiring diagram

Fuse Thermostat Cord heater

Outdoor unit

Earth leakage circuit breaker Power supply for air conditioner

Earth leakage circuit breaker Power supply for cord heater

* Be sure to connect the fuse and the thermostat to LIVE side of the cord heater.

NOTE:

Separate the cord heater power from the air conditioner power, and connect it to its exclusive breaker.

By doing so, the power consumption can be decreased because the breaker can be turned off if there is no

possibility of freezing of the base plate in cooling operation, etc.

When the cord heater power is connected to the inverter P.C. board assembly or others without connected to the

exclusive breaker, the control P.C. board of the inverter assembly may cause a failure.

When the cord heater has been mounted on a base plate, do not mount the water-proof cap and drain nipple which

are provided with the outdoor unit on the base plate.

Appendix

Appendix-4

4. Cord heater installation work procedure

No. Photo / Explanatory diagram Procedure

1Remove each cabinet, inverter assembly, motor base assembly, and partition board assembly.

* Do not damage the electric parts such as cables, connectors, etc. while this work.

Remove the upper cabinet and the valve cover.

Related parts / Screws list

Used screw

Part name Screw type Quantity

Upper cabinet Ø4 × 85

Valve cover Ø4 × 11

1-1

Remove the front cabinet, the wiring cover and the

water-proof cover.

Related parts / Screws list

Used screw

Part name Screw type Quantity

Front cabinet Ø4 × 87

Wiring cover Ø4 × 82

1-2

Remove the side cabinet (R/L) and the inverter

assembly.

Related parts / Screws list

Used screw

Part name Screw type Quantity

Side cabinet (R) Ø4 × 87

Side cabinet (L) Ø4 × 83

Inverter assembly Ø4 × 81

1-3

Remove the inverter assembly.

No. Part name Connector No. Connector color

1 TE sensor CN600 White

2 TD sensor CN601 White

3 TO sensor CN602 White

4 TS sensor CN603 White

54-way valve

coil CN701 Yellow

6 PMV coil CN700 White

7 Fan motor CN300 White

8Compressor

lead (Intermediate connector) White

9Reactor

(2 pieces.) (Intermediate connector) White

1-4

Upper cabine

irin

cove

Water-proof

cover

Front

cab

Side cabinet

(

)

Side cabinet

(

)

Inverter assembl

Appendix-5

Appendix

No. Photo / Explanatory diagram Procedure

Remove the motor base assembly, partition plate assembly

and the sound insulation board.

Related parts / Screws list

Used screw

Part name Screw type Quantity

Motor base assembly

(Including motor and fan) Ø4 × 82

Partition plate assembly

(Including reactor) Ø4 × 83

1-5

Remove the fixing screws of the heat exchanger and the

valve fixing plate. Remove the compressor fixing bolt.

Related parts / Screws list

Used screw

Part name Screw type Quantity

Heat exchanger Ø4 × 81

Valve fixing plate Ø4 × 81

Compressor bolt 3

1-6

As shown in the left figure, remove the set of refrigeration cycle

assembly from the outdoor unit base plate.

* In this time, work attentively so that the cycle pipes are not

damaged by dent or deformation. Apply protective

measures to pipes if necessary.

1-7

ound

tion

Partition plate

assembl

base

assembl

Valve fixin

plat

Heat exchan

Compresso

Appendix

Appendix-6

No. Photo / Explanatory diagram Procedure

Cord heater installation work

Drill a hole on the outdoor unit base plate, and fix the cord heater to the outdoor unit base plate using P-shape

clamp.

Connect the cord heater cables.

2-1

Using a motor drill, etc., drill Ø3.2 holes on the outdoor unit base plate. (12 positions) See Appendix-10 for the

additional hole positions.

These holes are used to fix the cord heater to the outdoor unit base plate with P-shape clamp.

2-2

Insert the PVC tube into the cord heater.

This tube is designed to protect the cord heater from

the fixing screws used to secure the anchoring feet.

As shown in the left figure, install the cord heater

(1.5m) to the outdoor unit base plate by using P-

shape clamp and screws (Self-tapping screw type-B

Ø4 × 6mm, stainless).

Pay attention to the direction of P-shape clamp so

that it is set to the same direction in the left figure.

* If the drain port is frozen due to installation

status, etc., draw around the cord heater so that

the end part of the heater is inserted into the

drain port. In this case, add some fixing

positions to fix the cord heater surely.

* The end part from the marked part of the cord

heater heats up. When there is the heating part

near the electric parts box, a fire may generate.

Be sure to set the heating part on the outdoor

unit base plate at the fan room side or near it.

(within 20cm from the outdoor unit base plate)

* Be careful that the cord heater does not hit the

fan.

Fix the cord heater without any loosening or sag.

2-3

Drill a hole on the side cabinet (R) for fixing the

thermostat fixing plate.

Ø5 hole at two positions

When drilling a hole on the side cabinet (R), be

sure not to damage the cabinet.

dded

Side cabinet

(

)

Ø9.1 P-shape clamp

tub

The PV

tube must be inserted

into th

the fixin

screws in order to

protect the cord heater from

ese

r no

ces

ube

llow

to ri

the tip of the fixing screws.

Enlar

marked par

Heatin

par

Appendix-7

Appendix

No. Photo / Explanatory diagram Procedure

2-4

Rework the side cabinet (L) to remove part of it.

The area to be removed is indicated by the shaded

lines in the left figure.

After removing part of the side cabinet (L), deburr the

edges of the side cabinet (L).

2-5

Perform end process and bundling of each cable.

Using fixing screws (Self-tapping screw type-B Ø3.5

× 6mm), fix the thermostat to the thermostat fixing

plate.

Perform end process for various lead cables and

connect them according to the wiring diagram.

Attach #250 Faston and UL-approved sleeves each

to the end of lead cables which are connected to the

thermostat.

Using insulation tape, apply protective measures to

the connected parts by the close-end connectors.

Using P-shape clamp and the screws (Self-tapping

screw type-B Ø4 × 8mm), fix the power cord to the

thermostat fixing plate.

When the power cord size does not match with P-

shape clamp, procure the most appropriate one at

the local site.

use

Fuse holde

Thermostat

rmo

fixin

plat

P-shape clamp

Pow

ord heate

* Transparent

Close-end connector

insulation tap

Side cabinet

(

)

Appendix

Appendix-8

No. Photo / Explanatory diagram Procedure

Assembly

Return a set of the refrigeration cycle assembly into the outdoor unit base plate and reassemble sound insulation

board, partition plate assembly, fan motor assembly, and side cabinet (R/L) as original. Fix the thermostat fixing

plate to the side cabinet (R), built in the inverter assembly, and then connect various cables. After then,

incorporate front cabinet, upper cabinet, wiring cover, and valve cover as before.

3-1

Return a set of the refrigeration cycle assembly into the

outdoor unit base plate, and assemble sound insulation

board, partition plate assembly, fan motor assembly, and

side cabinet (R/L) as original.

3-2

Using screws (Self-tapping screw type-B Ø4 × 8mm,

stainless), fix the thermostat fixing plate to the side

cabinet (R).

3-3

After incorporating the inverter assembly as before,

furthermore perform cable process for cord heater and

power cord.

For the cord heater, perform cable process so that there

is no looseness or sag at the fan side.

Perform cable process for the cord heater together with

the fan motor lead cable, and collect the remained part

of cables at cable process part of the inverter.

Secure the power cord for the cord heater to the

terminal block mounting plate using the P-shape clamp,

and pull it out from the wiring area of the side cabinet

(R).

* Check that there is the marked part of the cord heater

on the outdoor unit base plate or near it.

When there is the heating part near the electric parts

box, a fire may generate.

Since the lead wires connected to the cord heater and

thermostat may come into contact with the edges of the

sheet metal or tips of the screws, wrap the shield tubes

around the leads to protect them and use the bundling

ties to secure them.

3-4 Incorporate front cabinet, upper cabinet, wiring cover, water-proof cover and valve cover as before.

4In installation work, connect power cord for the cord heater to another breaker separated from one for power cord

of the air conditioner.

Side cabinet

(

)

Thermostat fixin

plat

Perform cable process for collected

n motor l

ead

cab

es.

Pow

for

P-shape

clamp

To keep the lead wires from comin

into contact with the

edges of the sheet metal or tips of the screws, wrap the

shield tubes around the leads to protect them and use

the bundling ties to secure them.

Do not make cord heater loose.

Do not put the heating part near the electric parts box.

Appendix-9

Appendix

5.8

3-Ø3.4 burring hole

(Downward)

2-Ø3.4 burring hole

(Upward)

Material: SGCC-Z08, Thickness: 0.8t

5. Drawing of thermostat fixing plate

Appendix

Appendix-10

6. Diagram showing positions φφ

φφ

φ3.2 mm holes to be additionally drilled in base plate

TOSHIBA CARRIER CORPORATION

2 CHOME 12-32, KONAN, MINATOKU, TOKYO, 108-0075, JAPAN

This product is compliant with Directive 2002/95/EC, and cannot be disposed as unsorted municipal waste.

Toshiba Ras 10Gavp E Service Manual

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