Toshiba Ras 13Uav E2 Service Manual

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FILE NO. SVM-03008

SERVICE MANUAL

AIR CONDITIONER

SPLIT WALL TYPE

Jun., 2003

RAS-13UKV-E2 / RAS-13UAV-E2

– 1 –

FILE NO. SVM-03008

CONTENTS

1. SPECIFICATIONS

1-1 Specifications

1-2 Operation Characteristic Curve

1-2 Capacity Variation Ratio According to Temperature

2. REFRIGERANT R410A

2-1 Safety During Installation/Servicing

2-2 Refrigerant Piping Installation

2-3 Tools

2-4. Recharging of Refrigerant

2-5. Brazing of Pipes

3. CONSTRUCTION VIEWS

3-1 Indoor Unit

3-2 Outdoor Unit

4. WIRING DIAGRAM

4-1 Indoor Unit

4-2 Outdoor Unit

5. SPECIFICATION OF ELECTRICAL PARTS

5-1 Indoor Unit

5-2 Outdoor Unit

6. REFRIGERANT CYCLE DIAGRAM

6-1 Refrigerant Cycle Diagram

6-2 Operation Data

7. CONTROL BLOCK DIAGRAM

7-1 Indoor Unit

7-2 Outdoor Unit (Inverter Assembly)

8. OPERATION DESCRIPTION

8-1 Outlined of Air Conditioner Control

8-2 Description of Operation Circuit

8-3 Temporary Operation

8-4 Auto Restart Function

8-5 Filter Check Lamp

8-6 Remote Control and its Functions

8-7 Hi POWER Mode ([Hi POWER] button on the remote control is pushed.)

9. INSTALLATION PROCEDURE

9-1 Safety Cautions

9-2 INDOOR UNIT

9-3 OUTDOOR UNIT

– 2 –

FILE NO. SVM-03008

10. HOW TO DIAGNOSE THE TROUBLE

10-1 First Confirmation

10-2 Primary Judgment

10-3 Judgment by Flashing LED of Indoor Unit

10-4 Self-Diagnosis by Remote Control (Check Code)

10-5 Judgment of Trouble by Every Symptom

10-6 Check Code 1C (Miswiring in indoor/outdoor units) and 1E

10-7 How to Diagnose Trouble in Outdoor Unit

10-8 How to Check Simply the Main Parts

10-9 How to Simply Judge Whether Outdoor Fan Motor is Good or Bad

11. HOW TO REPLACE THE MAIN PARTS

11-1 Indoor Unit

11-2 Microcomputer

11-3 Outdoor Unit

12. EXPLODED VIEWS AND PARTS LIST

12-1 Indoor Unit (E-Parts Assy)

12-2 Indoor Unit

12-3 Outdoor Unit

12-4 Outdoor Unit (E-Parts Assy)

– 3 –

FILE NO. SVM-03008

1. SPECIFICATIONS

1-1. Specifications

Unit model Indoor RAS-13UKV-E2

Outdoor RAS-13UAV-E2

Current limited —

Cooling capacity (kW) 3.5

Cooling capacity range (kW) 0.9 – 4.0

Heating capacity (kW) 4.2

Heating capacity range (kW) 0.9 – 6.0

Power supply 220 – 240V –1Ph –50/60Hz

Electric Indoor Operation mode Cooling Heating

characteristics Running current (A) 0.15 0.15

Power consumption (W) 30 30

Power factor (%) 87 87

Outdoor Operation mode Cooling Heating

Running current (A) 4.65 5.01

Power consumption (W) 1020 1100

Power factor (%) 95 95

Starting current (A) 5.31

COP (Cooling / Heating) 3.33/3.72

Operation noise Indoor High (Cooling / Heating) (dB•A) 39/39

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

Low (Cooling / Heating) (dB•A) 26/28

Outdoor (Cooling / Heating) (dB•A) 48/50

Indoor unit Unit model RAS-13UKV-E2

Dimension Height (mm) 275

Width (mm) 790

Depth (mm) 208

Net weight (kg) 10

Fan motor output (W) 30

Air flow rate (Cooling / Heating) (m3/h) 530/620

Outdoor unit Unit model RAS-13UAV-E2

Dimension Height (mm) 550

Width (mm) 780

Depth (mm) 720

Net weight (kg) 40

Compressor Motor output (W) 750

Type Twin rotary type with DC-inverter variable speed control

Model DA91A1F-45F

Fan motor output (W) 43

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

Piping connection Type Flare connection

Indoor unit Liquid side ∅6.35

Gas side ∅9.52

Outdoor unit Liquid side ∅6.35

Gas side ∅9.52

Maximum length (Per unit) (m) 15

Maximum chargeless length (m) 15

Maximum height difference (m) 10

Refrigerant Name of refrigerant R410A

Weight (kg) 0.9

Wiring connection Power supply 3 Wires: includes earth (Outdoor)

Interconnection 4 Wires: includes earth

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

Outdoor (Cooling / Heating) (°C) 10 – 43 / –10 – 24

Accessory Indoor unit Installation plate 1

Wireless remote control 1

Remote controller holder 1

Flat head wood screw 2 (∅3.1 x 16L)

Purifying filter 1

Zeolite filter 1

Batteries 2

Mounting screw 6 (∅4 x 25L)

Installation manual 1

Owner’s manual 1

Outdoor unit Drain nipple 1

•The specification may be subject to change without nitice for purpose of improvement.

– 4 –

FILE NO. SVM-03008

1-2. Operation Characteristic Curve

Current (A)

Compressor speed (rps)

0 20 40 60 80 100

• Conditions

Indoor : DB 27°C/WB 19°C

Outdoor : DB 35°C

Air flow : High

Pipe length : 5m

230V

Current (A)

Compressor speed (rps)

0 20 40 60 80 100

• Conditions

Indoor : DB 20°C

Outdoor : DB 7°C/WB 6°C

Air flow : High

Pipe length : 5m

230V

1-3. Capacity Variation Ratio According to Temperature

120

110

100

−

012345678910

Capacity ratio (%)

Outdoor temp. (°C)

• Conditions

Indoor : DB 20°C

Indoor air flow : High

Pipe length : 5m

* Capacity ratio : 100% = 3.5 kW

105

100

32 34 36 38 40 4233 35 37 39 41 43

Outdoor temp. (°C)

Capacity ratio (%)

• Conditions

Indoor : DB27°C/WB19°C

Indoor air flow : High

Pipe length 5m

Current Limited Start

– 5 –

FILE NO. SVM-03008

(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.

2-2. Refrigerant Piping Installation

2-2-1. Piping materials and joints used

For the refrigerant piping installation, copper pipes and

joints are mainly used. Copper pipes and joints suit-

able 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 pressure

higher than when using R22, it is necessary to

choose adequate materials.

Thicknesses of copper pipes used with R410A are

as shown in Table 2-2-1. Never use copper pipes

thinner than 0.8 mm even when it is available on

the market.

2. 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 refrigerating 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.

2-1. 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 materials exclu-

sive 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 instal-

lation/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

refrigeration cycle. Otherwise, pressure in the

refrigeration cycle may become abnormally high

so that a rupture of personal injury may be

caused.

– 6 –

FILE NO. SVM-03008

Table 2-2-1 Thicknesses of annealed copper pipes

Thickness (mm)

Nominal diameter Outer diameter (mm) R410A R22

1/4 6.35 0.80 0.80

3/8 9.52 0.80 0.80

1/2 12.70 0.80 0.80

5/8 15.88 1.00 1.00

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 2-2-2.

(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 2-2-3 to 2-2-6

below.

Table 2-2-2 Minimum thicknesses of socket joints

Nominal diameter Reference outer diameter of Minimum joint thickness

copper pipe jointed (mm) (mm)

1/4 6.35 0.50

3/8 9.52 0.60

1/2 12.70 0.70

5/8 15.88 0.80

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

conventional flare tool.

Flare processing dimensions differ according to

the type of flare tool. When using a

conventional flare tool, be sure to secure

“dimension A” by using a gauge for size

adjustment.

Fig. 2-2-1 Flare processing dimensions

2-2-2. 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 other than

lubricating oils used in the installed air conditioner 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

∅DA

– 7 –

FILE NO. SVM-03008

A (mm)

Conventional flare tool

Clutch type Wing nut type

1/4 6.35 0.8 0 to 0.5 1.0 to 1.5 1.5 to 2.0

3/8 9.52 0.8 0 to 0.5 1.0 to 1.5 1.5 to 2.0

1/2 12.70 0.8 0 to 0.5 1.0 to 1.5 2.0 to 2.5

5/8 15.88 1.0 0 to 0.5 1.0 to 1.5 2.0 to 2.5

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

Nominal

diameter

Outer

diameter

(mm)

Thickness

(mm) Flare tool for R410A

clutch type

A (mm)

Conventional flare tool

Clutch type Wing nut type

1/4 6.35 0.8 0 to 0.5 0.5 to 1.0 1.0 to 1.5

3/8 9.52 0.8 0 to 0.5 0.5 to 1.0 1.0 to 1.5

1/2 12.70 0.8 0 to 0.5 0.5 to 1.0 1.0 to 2.0

5/8 15.88 1.0 0 to 0.5 0.5 to 1.0 1.0 to 2.0

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

Nominal

diameter

Outer

diameter

(mm)

Thickness

(mm) Flare tool for R410A

clutch type

Dimension (mm)

ABCD

1/4 6.35 0.8 9.1 9.2 6.5 13 17

3/8 9.52 0.8 13.2 13.5 9.7 20 22

1/2 12.70 0.8 16.6 16.0 12.9 23 26

5/8 15.88 1.0 19.7 19.0 16.0 25 29

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

Nominal

diameter

Outer

diameter

(mm)

Thickness

(mm)

Flare nut

width

(mm)

Dimension (mm)

ABCD

1/4 6.35 0.8 9.0 9.2 6.5 13 17

3/8 9.52 0.8 13.0 13.5 9.7 20 22

1/2 12.70 0.8 16.2 16.0 12.9 20 24

5/8 15.88 1.0 19.7 19.0 16.0 23 27

3/4 19.05 1.0 23.3 24.0 19.2 34 36

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

Nominal

diameter

Outer

diameter

(mm)

Flare nut

width

(mm)

Thickness

(mm)

– 8 –

FILE NO. SVM-03008

(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.

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

When it is strong, the flare nut may crack and

may be made non-removable. When choosing

the tightening torque, comply with values

designated by manufacturers. Table 2-2-7

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.

Tightening torque of torque

Nominal Outer diameter Tightening torque wrenches available on the market

diameter (mm) N·m (kgf·cm) N·m (kgf·m)

1/4 6.35 14 to 18 (140 to 180) 16 (160), 18 (180)

3/8 9.52 33 to 42 (330 to 420) 42 (420)

1/2 12.70 50 to 62 (500 to 620) 55 (550)

5/8 15.88 63 to 77 (630 to 770) 65 (650)

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

– 9 –

FILE NO. SVM-03008

2-3. Tools

2-3-1. Required tools

The service port diameter of packed valve of the outdoor unit in the air conditioner 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 ∅12.70 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

R410A air conditioner Conventional air

installation conditioner installation

No. Used tool Usage Existence of Whether Whether new equipment

new equipment conventional can be used with

for R410A equipment can conventional refrigerant

be used

1Flare tool Pipe flaring Yes *(Note 1)

2Copper pipe gauge Flaring by

for adjusting projection conventional flare Yes *(Note 1) *(Note 1)

margin tool

3Torque wrench Connection of Yes

(For ∅12.70) flare nut

4Gauge manifold

5Charge hose

6Vacuum pump adapter Vacuum evacuating Yes

7Electronic balance for Refrigerant charge Yes

refrigerant charging

8Refrigerant cylinder Refrigerant charge Yes

9Leakage detector Gas leakage check Yes

!Charging cylinder Refrigerant charge (Note 2)

Evacuating,

refrigerant charge, Yes

run check, etc.

(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 (4) Reamer (9) Hole core drill (∅65)

Use vacuum pump by (5) Pipe bender (10) Hexagon wrench

attaching vacuum pump adapter. (6) Level vial (Opposite side 5 mm)

(2) Torque wrench (For ∅6.35) (7) Screwdriver (+, –) (11) Tape measure

(3) Pipe cutter (8) Spanner of Monkey wrench (12) Metal saw

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

(1) Clamp meter (3) Insulation resistance tester

(2) Thermometer (4) Electroscope

– 10 –

FILE NO. SVM-03008

2-4. Recharging of Refrigerant

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

following steps.

Recover the refrigerant, and check no refrigerant

remains in the equipment.

Connect the charge hose to packed valve service

port at the outdoor unit’s gas side.

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 indi-

cated -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.

(For refrigerant charging, see the figure below.)

1Never charge refrigerant exceeding the specified amount.

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

3Do 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. 2-4-1 Configuration of refrigerant charging

(INDOOR unit) (Liquid side)

(OUTDOOR unit)

Opened

(Gas side)

Closed

Service port

Electronic balance for refrigerant charging

Check valve

Open/Close valve

for charging

Refrigerant cylinder

(With siphon pipe)

– 11 –

FILE NO. SVM-03008

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

2When 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.

[Cylinder with siphon] [Cylinder without siphon]

Fig. 2-4-2

R410A refrigerant is HFC mixed refrigerant.

Therefore, if it is charged with gas, the composition

of the charged refrigerant changes and the

characteristics of the equipment varies.

2-5. Brazing of Pipes

2-5-1. 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.

1Phosphor 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.

2When performing brazing again at time of

servicing, use the same type of brazing filler.

2-5-2. 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.

Gauge manifold

Refrigerant

cylinder

Electronic

balance

OUTDOOR unit

Refrigerant

cylinder

Electronic

balance

Siphon

Gauge manifold OUTDOOR unit

– 12 –

FILE NO. SVM-03008

(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

harmless 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

temperature 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

Piping Used brazing Used

material filler flux

Copper - Copper Phosphor copper Do not use

Copper - Iron Silver Paste flux

Iron - Iron Silver Vapor flux

2-5-3. 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

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

Nitrogen gas cylinder.

2Use a copper pipe to direct the piping material,

and attach a flow-meter to the cylinder.

3Apply a seal into the clearance between the

piping material and inserted copper pipe for

Nitrogen in order to prevent backflow of the

Nitrogen gas.

4When the Nitrogen gas is flowing, be sure to

keep the piping end open.

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

lower than 0.05 m3/Hr or 0.02 Mpa (0.2 kgf/

cm2) by means of the reducing valve.

6After 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).

7Remove the flux completely after brazing.

Fig. 2-5-1 Prevention of oxidation during brazing

1Do not enter flux into the refrigeration cycle.

2When chlorine contained in the flux remains

within the pipe, the lubricating oil deteriorates.

Therefore, use a flux which does not contain

chlorine.

3When adding water to the flux, use water which

does not contain chlorine (e.g. distilled water or

ion-exchange water).

4Remove the flux after brazing.

Nitrogen gas

cylinder

MFlow meter

Stop valve

From Nitrogen cylinder

Nitrogen

gas

Rubber plug

Pipe

– 13 –

FILE NO. SVM-03008

3. CONSTRUCTION VIEWS

3-1. Indoor Unit

Connecting pipe (0.33m)

Flare ∅9.52

Knock out system

Back body

Front panel

Air outlet

Air inlet Air filter Heat exchanger

Knock out system

660

275

790 208

4519040

590

320

620

235 235

215 215

9090

275 45

150150 160160

120 80

660

Hanger

Hanger Hanger

Drain hose (0.54m) Connecting pipe (0.43m)

(Flare ∅6.35)

For stud bolt

(∅8~∅10)

For stud bolt (∅6)

Installation plate outline

Center line

Minimum

distance

to ceiling

170 or more

Minimum

distance

to ceiling

170 or more

65 or more

Minimum

distance

to ceiling

Wireless remote control

57 18

160

– 14 –

FILE NO. SVM-03008

3-2. Outdoor Unit

R15

R5.5

Service port

Gas side

(Flare ∅9.52)

Liquid side

(Flare ∅6.35)

Electrical

part cover

B Detail drawing (Front Leg)

600 or more

A Detail drawing (Back Leg)

600

32.5 115 125

310

302

530

265

120

310

302

∅6 Hole

∅436

270 600

780

90 310

330

∅30 Drain outlet

FAN GUARD

Z View

600

320

Installation dimension

600 or more

Air outlet

Air inlet

100 or more

4 x ∅11 x 14 Long holes (For ∅8 − ∅10 anchorbolt)

COVER PV

∅6 Hole

R15

310

102

302

∅11 x 14 Hole

2-∅11 x 14 Hole

(For ∅8-∅10 anchor bolt)

– 15 –

FILE NO. SVM-03008

4. WIRING DIAGRAM

4-1. Indoor Unit

Table 4-1-1 Simple Check for Failure Diagnosis

Refer to the service data for the detailed failure diagnosis.

Diagnosis Result

Check to see if the OPERATION indicator goes on and off when the main

switch or breaker is turned on.

(Check the primary and secondary voltage of the transformer.)

Check the power supply voltage between 1 and 2. (Refer to the name plate.)

(Check the primary and secondary voltage of the transformer.)

Check the fluctuating voltage between 2 and 3. (DC15 to 60 V)

Check to see if the fuse blows out.

(Check the R04 of the varistor.)

Check the voltage at the No. 4 pin on CN13 connector of the infrared receiver.

(Check the transformer and the power supply circuit of the rated voltage.)

Check the voltage at the white lead of the louver motor.

(Check the transformer and the power supply circuit of the rated voltage.)

Check the voltage at the No. 1 pin on CN10 connector.

(Check the DB01, R05 and C03.)

Check Item

OPERATION

INDICATOR

TERMINAL BLOCK

FUSE 3.15A

DC5V

DC12V

DC325V

(DC310 to 340V)

– 16 –

FILE NO. SVM-03008

4-2.Outdoor Unit

P.C. BOARD

(MCC-813)

– 17 –

FILE NO. SVM-03008

5. SPECIFICATION OF ELECTRICAL PARTS

5-1. Indoor Unit

No. Parts name Type Specifications

1 Fan motor (for indoor) ICF-340-30-2 DC 340 V, 30 W

2 Thermo. sensor (TA-sensor) ——— 10 kΩ at 25°C

3 DC-DC transformer (T01) SWT-70 DC 390 V, Secondary DC 15 V, 12 V, 7 V

4 Microcomputer µPD780024AGK

5 Heat exchanger sensor ——— 10 kΩ at 25°C

(TC-sensor)

6 Line filter (L01 SS11V-06270 27mH, AC 0.6A

7 Diode (DB01) D3SBA60 4A, 600 V

8 Capacitor (C03) KMH450VNSN120M25C 120µF, 450 V

9 Fuse (F01) FCU250V, 3.15A T3.15A, 250 V

10 Power supply IC (IC01) STR-L472

11 Varistor (R21, R109) 15G561K 560 V

12 Resistor (R01) RF-5TK4R7 4.7Ω, 5 W

13 Louver motor MP24GA Output (Rated) 1 W,16 poles, 1 phase,

DC 12 V

5-2. Outdoor Unit

No. Parts name Model name Rating

1 SC coil L01 ADR2516-0R6TB 20A, 150µH

(Noise filter) L03 ADR2520-R15TB 15A, 0.6mH

Primary side DC280V, Secondary

2 DC-DC transformer SWT-43 side 7.5 V x 1, 13 V x 1, 26.5V x 3,

16 V x 1, 15 V x 1

3 Reactor CH-57-Z-T L=10mH, 16A x 2

4 Outside fan motor ICF-140-43-1 DC140 V, 43 W

5 Suction temp. sensor (Inverter attached) 10 kΩ (25°C)

(TS sensor)

6Discharge temp. sensor (Inverter attached) 62 kΩ (20°C)

(TD sensor)

7Outside air temp. sensor (Inverter attached) 10 kΩ (25°C)

(TO sensor)

8Heat exchanger temp. (Inverter attached) 10 kΩ (25°C)

sensor (TE sensor)

9 Terminal block (6P) ——— 20A, AC 250 V

10 Fuse For protection of switching power source 3.15A, AC 250 V

For protection of inverter input overcurrent 25A, AC 250 V

11 Electrolytic capacitor LLQ2G501KHUATF, 400LISN500K35F 500µF, DC 400 V x 3 pieces

12 Transistor module 6MBI25GS-060-01 or 6MBI25GS-060-01A 25A, 600 V

13 Compressor DA91A1F-45F 3-phases 4-poles 750 W

14 Compressor thermo. PW-2AL OFF: 125 ± 4°C, ON: 90 ± 5°C

15 Converter module MP7003 Diode: 25A, 600 V,

IGBT: 40 A, 600V

– 18 –

FILE NO. SVM-03008

6. REFRIGERANT CYCLE DIAGRAM

6-1. Refrigerant Cycle Diagram

Note :

•The maximum length of the pipe for this air conditioner is 15 m. The additional charging of refrigerant is

unnecessary because this air conditioner is designed with charge-less specification.

Deoxidized copper pipe

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. : 6.35 mm

Thickness : 0.8 mm

Sectional shape

of heat insulator

Allowable height

difference : 10m

Allowable pipe length

Max. : 15 m

Pressure measurement

Gauge attaching port

Vacuum pump connecting port

Strainer

Pulse modulating

valve at liquid side

(SEV16RC3)

∅1.5 x 200

4-way valve

(CHV-0213)

Compressor

DA91A1F-45F

Outdoor heat

exchanger Split capillary

Temp. measurement

Propeller fan Refrigerant amount : 0.9 kg

OUTDOOR UNIT

Muffler

Outer dia. : 9.52 mm

Thickness : 0.8 mm

– 19 –

FILE NO. SVM-03008

Note :

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

(Thermistor themometer)

(2) Connecting piping condition : 5m

Temperature

condition (°C)

Indoor Outdoor

27/19 35/–13UKV-E2 0.8 to 1.0 9 to 11 49 to 45 High High 77

Model

name

Standard

pressure

P (MPa)

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

Indoor

fan

mode

Outdoor

fan

mode

Compressor

revolution

(rps)

Temperature

condition (°C)

Indoor Outdoor

20/–7/6 13UKV-E2 2.5 to 2.7 42 to 44 0 to 3 High High 83

Model

name

Standard

pressure

P (MPa)

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

Indoor

fan

mode

Outdoor

fan

mode

Compressor

revolution

(rps)

6-2. Operation Data

– 20 –

FILE NO. SVM-03008

REMOTE CONTROL

Remote Control

Operation (START/STOP)

Operation Mode Selection

AUTO, COOL, DRY, HEAT, FAN ONLY

Temperature Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver Auto Swing

Louver Direction Setting

ECO

Hi power

Filter Reset

Infrared Rays

7. CONTROL BLOCK DIAGRAM

7-1. Indoor Unit

• Louver Control

•

3-minute Delay at Restart for Compressor

•

Motor Revolution Control

•

Timer

•

Serial Signal Communication

•

Processing

(Temperature Processing)

Functions

M.C.U

Indoor Unit Control Panel

From Outdoor Unit

Remote

Control

Heat Exchanger Sensor

Temperature Sensor

Infrared Rays Signal Receiver

Infrared

Rays

Initiallizing Circuit

Clock Frequency

Oscillator Circuit

Louver Motor

36.7KHz

Power Supply

Circuit

Noise Filter

Filter

Sign Display

PRE DEF.

Sign Display

Indoor

Fan Motor

Louver

Motor

Timer

Display

Operation

Display

Louver Driver

Louver ON/OFF Signal

Serial Signal Communication

Serial Signal Transmitter/Receiver

– 21 –

FILE NO. SVM-03008

7-2. Outdoor Unit (Inverter Assembly)

220 − 240 V

50/60 Hz

MICRO-COMPUTER BLOCK DIAGRAM

Over current

sensor

Driver circuit

of P.M.V.

Over current

sensor

Heat exchanger

temp.sensor

Suction temp.

sensor

Outdoor air

temp. sensor

Discharge

temp. sensor

Inddor unit

send/receive

circuit

Relay

circuit

Noise

Filter Converter

(AC → DC)

Clock

frequency

16MHz

High Power

factor Correction

circuit

Input current

sensor

Rotor position

detect circuit

Rotor position

detect circuit

• 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 Modulating Valve

M.C.U : Micro Control Unit

M.C.U

For INDOOR UNIT

4-way

valve

P.M.V.

Inverter

(DC → AC)

Over current

detect circuit

Gate drive

circuit

Gate drive

circuit

Over current

sensor Inverter

(DC → AC)

Outdoor

Fan motor

Compressor

MCC813 (P.C.B) OUTDOOR UNIT

FILE NO. SVM-03008

– 22 –

(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)

•Temperature setting of the indoor heat

exchanger by using heat exchanger sensor

(TC sensor) (Prevent-freezing control)

•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

(2) Role of outdoor unit controller

Receiving the operation command signal (Serial

signal) from the indoor controller, the outdoor unit

performs its role.

•Compressor operation

control

•Operation control of

outdoor fan motor

•P.M.V. control

•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 to indoor unit

•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)

8. OPERATION DESCRIPTION

8-1. Outlined 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 110 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 control,

and transfers the operation command to the outdoor

unit controller.

The outdoor unit controller receives operation

command from the indoor unit side, and controls the

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

Besides, detecting revolution position of the

compressor 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.

Operations followed

to judgment of serial

signal from indoor

side.

FILE NO. SVM-03008

– 23 –

(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 control

•Compressor revolution command signal

defined by indoor temperature and set tem-

perature (Correction along with variation of

room

temperature and correction of indoor heat

exchanger temperature are added.)

•For these two types of signals ([Operation

mode] and [Compressor revolution]), 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.

•Temperature of indoor heat exchanger by

indoor heat exchanger sensor

(Minimum revolution control)

(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.

8-1-1. Capacity control

The cooling and heating capacity is varied by changing

compressor motor speed. The inverter changes

compressor motor speed by changing

AC 220-240 V power to DC once, and controls capac-

ity by changing supply power status to the compressor

with transistor module (includes 6 transistors). The

outline of the control is as follows:

The revolution position and revolution speed of the

motor are detected by detecting winding electromotive

force of the compressor motor under operation, and

the revolution speed is changed so that the motor

drives based upon revolution speed of the operation

command by changing timing (current transfer timing)

to exchange inverter output voltage and supply power

winding.

Detection of the revolution position for controlling is

performed 12 times per 1 revolution of compressor.

The range of supply power frequency to the

compressor differs according to the operation status

(COOL, HEAT, DRY).

Table 8-1-1 Compressor revolution range

8-1-2. Current release control

The outdoor main circuit control section (Inverter

assembly) detects the input current to the outdoor unit.

If the current value with compressor motor speed

instructed from indoor side exceeds the specified

value, the outdoor main circuit control section controls

compressor motor speed by reducing motor speed so

that value becomes closest to the command within the

limited value.

8-1-3. Power factor improvement control

Power factor improvement control is performed mainly

aiming to reduce the current on much power consump-

tion of cooling/heating operation. Controlling starts

from the time when input power has reached at a

certain point. To be concrete, IGBT of the power factor

improvement circuit is used, and the power factor is

improved by keeping IGBT on for an arbitrary period to

widen electro-angle of the input current.

Operation Model

mode name

COOL 13UKV-E2

HEAT

Compressor

revolution (rps)

13 to 88

16 to 110

FILE NO. SVM-03008

– 24 –

8-1-4. Prevent-freezing control

The indoor heat exchanger sensor detects refrigerant

vapor temperature in COOL/DRY operation. If the

temperature is below the specified value, compressor

motor speed is reduced so that operation is performed

in temperature below the specified value to prevent-

freezing of indoor heat exchanger.

8-1-5. P.M.V. (Pulse Modulating Valve)

Using P.M.V., refrigerant flow of refrigeration cycle is

varied for the optimum temperature.

After the power has been turned on, when a serial

operation signal is received from indoor at the first

time, or when PMV alarm is detected and the equip-

ment is reactivated, move the valve once until it hits on

the stopper for positioning of the valve. In this case,

ticktack sound may be heard.

8-1-6. Louver control

(1) Vertical air flow louvers

Positions of vertical air flow louvers are

automatically controlled according to the operation

status (AUTO (A), COOL ( ), DRY ( ), HEAT( )

and FAN ONLY ( ). Besides, positions of vertical

air flow louvers can be arbitrarily set by pushing

the [FIX] button.

(2) Swing

If the [SWING] button is pressed during running

operation, vertical air flow louvers start swinging.

When the [FIX] button is pushed, swinging stops.

LOW+=

MED+=

LOW+MED

MED+HIGH

8-1.7. Indoor fan control (DC fan motor)

(1) The indoor fan is operated by the stepless speed

change DC motor.

(2) For air flow level, speed of the indoor fan motor is

controlled in five steps (LOW, LOW+, MED, MED+

and HIGH). If AUTO mode is selected, the fan

motor speed is automatically controlled by the

difference between the preset temperature and

the room temperature.

Table 8-1-2

RAS-13UKV-E2

Motor speed Air flow rate

(rpm) (m3/h)

H 1210 530

COOL M 1010 420

L 810 330

DRY — 780 320

H 1290 620

HEAT M 1110 470

L 930 380

Operation

mode Fan

mode

FILE NO. SVM-03008

– 25 –

8-1-8. Outdoor fan control (DC fan motor)

Although the outdoor fan motor drives the outdoor fan by non-step variable system of the revolution speed, the

revolution speed is restricted to three steps on the convenience of controlling. If a strong wind is lashing outside

of the room, the operation may be continued as the outdoor fan stops in order to protect the outdoor fan motor.

If a fan lock occurred due to entering of foreign matter, the air conditioner stops and an alarm is displayed.

<COOL, DRY>

Table 8-1-3

<HEAT>

Table 8-1-4

Model name RAS-13UAV-E2

Compressor revolution (rps) To 16.8 To 57.4 From 58.0

Outdoor temp. sensor TO TO ≥ 5°C 390 650 840

TO < 5°C 650 650 840

ECONO. operation TO ≥ 5°C 390 390 650

TO < 5°C 390 650 650

TO is abnormal 390 650 840

Model name RAS-13UAV-E2

Compressor revolution (rps) To 13.8 To 34.7 From 35.3

TO ≥ 38°C 390 840 840

Outdoor temp. sensor TO TO < 38°C 390 700 840

TO < 15°C 390

TO ≥ 38°C 390 700 840

ECONO. operation TO < 38°C 390 390 700

TO < 15°C 390

TO is abnormal 700 700 840

FILE NO. SVM-03008

– 26 –

8-2. Description of Operation Circuit

•Turning [ON] the breaker flashes the operation

lamp. (1Hz)

This is the display of power-ON (or notification of

power failure).

•When pushing [START/STOP] button of the

remote control, receive sound is issued from the

main unit, and the next operations are performed

together with opening the vertical air flow louvers.

8-2-1. Cooling operation

(The Remote Control MODE Button is Set to

the COOL Position)

•Once the setting is made, the operation mode is

memorized in the microcomputer so that the same

operation can be effected thereafter simply by

pushing [START/STOP] button.

•A cooling operation signal is transmitted to

outdoor unit.

•The outdoor unit controls the outdoor fan relay

R01, R02 and R03, and the compressor motor

speed according to the operation command signal

sent from the indoor unit.

•When [FAN] button is set to AUTO, the indoor fan

motor operates as shown in Fig. 8-2-1. When

[FAN] button is set to LOW , LOW+ ,

MED , MED+ , HIGH , the

motor operates with a constant air flow.

NOTE :

*1: Calculated from difference in motor speed of M+

and L, and controlled.

Fig. 8-2-1 Setting of air flow [Fan AUTO]

(1) Cooling capacity control

•The cooling capacity and room temperature

are controller by changing the compressor

motor speed according to both the difference

between the temperature detected by the room

temperature sensor and the temperature set by

TEMP button and also any change in room

temperature.

•When compressor has been activated or

reactivated, it operates with Max.41 rps for 2

minutes, with Max.91 rps from 2 minutes to 3

minutes, and with Max.88 rps after 3 minutes

passed.

•When room temperature is lower than set

temperature, indoor fan motor is operated at

fan speed L as shown in Fig. 8-2-1 while the

outdoor unit stops.

(2) Prevent-freezing control

If temperature of indoor heat exchanger detected

by the indoor heat exchanger sensor is 5°C lower,

compressor motor speed is gradually lowered to

prevent freezing of the indoor heat exchanger. If

temperature is 7°C or higher, return the operation

to the above item (1).

(3) Current release control

The input current of compressor and outdoor fan

motor (Precisely inverter main circuit control

section) which occupy most of air conditioner input

is detected by the outdoor current sensor, and

compressor motor speed is gradually lowered so

that current value does not exceed 9.0A if current

value exceeds 9.0A. When the current value

lowers to 8.5A, return the operation to the above

item (1).

Fig. 8-2-2

Set

temp.

M+

+2.5

+1.5

+0.5

−0.5

°C

(Room temp.) − (Set temp.)

In normal

operation

Normal control

9.0

8.5

Current value (A)

Comp. motor

speed down

Comp. motor

speed keep

FILE NO. SVM-03008

– 27 –

Air flow rate RAS-13UKV-E2

(rps)

HIGH 77

M+ 65

MED. 53

L–, L 30

UL, SUL 30

(4) Limit for maximum compressor motor speed

by indoor fan speed

When outdoor temperature sensor detected 32°C

or lower, and indoor heat exchanger sensor

detected 17°C or lower, the maximum compressor

motor speed is limited by the indoor fan speed.

For example, the compressor motor speed is

limited as described in the table below.

Table 8-2-1

rps : round per second

(5) Louver control

The vertical air flow louvers are automatically set

to horizontal or cool memory position.

When temperature of indoor heat exchanger

becomes 5°C or lower by the prevent-freezing

control and the compressor is turned off, the

vertical air flow louvers close once and then return

to the position of previous time.

(6) Discharge temperature control

(Common control to cooling and heating)

The discharge temperature of refrigerant gas from

the compressor is detected by the discharge

temperature sensor, and controls operating

compressor motor speed.

1) Control 1 (A zone) : Normal operation zone

When TD detect value is 98°C or lower, the

operation is performed with operating motor

speed instructed by the serial signal.

2) Control 2 (B zone) : Slow-up zone of motor

speed

When TD detect value is 98°C or higher,

operating motor speed is slowly up.

3) Control 3 (C zone) : Keep zone

When TD detect value is 105°C or higher,

operating motor speed is not changed if raising

operation speed.

4) Control 4 (D zone) : Slow down zone of motor

speed

When TD detect value is 108°C or higher,

operating motor speed is slowly down.

5) Control 5 (E zone) : Normal down of motor

speed

When TD detect value is 112°C or higher,

operating motor speed is down.

6) Control 6 (F zone) : Operation stop zone

If TD detect value exceeds 117°C during

operation, stop the operation immediately.

Then, restart the operation when TD detect

value becomes 105°C or lower.

Fig. 8-2-3 Compressor motor speed control

(7) ECO operation control

When the ECO button of the remote control is

pushed, quiet and mild operation is performed by

restraining air flow and operating motor speed.

1) Indoor air flow is controlled between SUL and

2) The set temperature increases 0.5°C per 1

hour up to +2°C starting from the set

temperature when ECO mode has been

received.

Fig. 8-2-4

Zone

Operation stop zone

Normal down zone

of motor speed

Slow down of

motor speed

Keep zone :

Motor speed is not changed.

Slow-up zone of motor speed

Normal operation zone

117

(°C)

112

108

105

Release of

motor speed

L−

SUL

rps FAN

OFF

+4.0

TA [°C]

+3.5

+3.0

+2.5

+2.0

+1.5

+1.0

+0.5

Tsc

−0.5

−1.0

−2.0

FILE NO. SVM-03008

– 28 –

[Basic control]

*1,*2 : Approximate revolution speed of M+ and L to

linear accordingly to temperature.

Fig. 8-2-6 Setting of air flow

[Cold draft preventing control]

The upper limit of fan revolution speed is shown below.

Fig. 8-2-7 Cold draft preventing control

NOTES :

*1 : Stops for 2 minutes after thermostat-OFF.

*2 : 24°C when the set temp. is 24°C or more

Set temp. when the set temp. is below 24°C

*3 : SUL : Super ultra low

8-2-2. DRY operation

(The Remote Control MODE Button is Set to

the DRY Position)

•Once the setting is made, the operation mode is

memorized in the microcomputer so that the same

operation can be effected thereafter simply by

pushing [START/STOP] button.

•Dry operation signal is transmitted to outdoor unit.

•The Cooling operation giving priority to

dehumidifying, which restrains the indoor fan speed

and compressor motor speed, is performed.

•The indoor fan motor operates as shown in

Fig. 8-2-5. (Fan speed is AUTO only.)

•The outdoor fan motor operates as described in

Table 8-1-3, and the compressor motor speed

according to the operation command signal sent

from the indoor unit.

NOTE :

*1 : Middle motor speed between L– and SUL

Fig. 8-2-5 Setting of air flow

8-2-3. Heating operation

Transferring of heat operation signal from indoor unit to

outdoor unit starts.

The indoor fan motor operates by the room

temperature when selecting “AUTO” of “FAN” as shown

in Fig. 8-2-6, and operates with a set air flow when

selecting “LOW ” to “HIGH ”.

However, to prevent cold draft, revolution speed of the

fan is restricted by indoor heat exchanger when air

flow is AUTO (Fig. 8-2-7) and starting of FAN Manual.

−0.5

+0.5

+1.0

+1.5

+2.0

+2.5

L−

SUL

(Room temp.) − (Set temp.)

Set

temp.

−0.5

−1

−1.5

−2

−5.0

−5.5

(Room temp.) −

(Set temp.)

Set

temp.

[FAN AUTO]

* 2

* 1

LOW

M+

HIGH

A − 8

A + 4

A − 8

HIGH

SUL

FAN

AUTO

Starting

of FAN

Manual

Approximate

revolution speed

of HIGH and SUL

linear by Tc.

Stop

( NOTE :

FILE NO. SVM-03008

– 29 –

Fig. 8-2-8

(4) Defrost control

1) Detection of frost

In heating operation, time duration while the

compressor operates is counted, and defrost

operation starts by any condition described

below.

a. The counted time is 28 minutes or more,

and status that temperature of the outdoor

heat exchanger detected by the outdoor

heat exchanger is –20°C or lower continued

for 2 minutes or more.

b. The counted time is 28 minutes or more,

and status that temperature of the outdoor

heat exchanger detected by the outdoor

heat exchanger is –7°C or lower and

temperature lowered by 2.5°C than the

minimum value of the outdoor heat

exchanger during 10 to 15 minutes count

time continued for 2 minutes or more.

c. The counted time is 34 minutes or more,

and status that temperature of the outdoor

heat exchanger detected by the outdoor

heat exchanger is -5°C or lower and

temperature lowered by 3.0°C than the

minimum value of the outdoor heat

exchanger during 10 to 15 minutes count

time continued for 2 minutes or more.

d. If the following three conditions are satis-

fied, defrost operation (Timer defrost) starts

after heating operation for 37 minutes.

1Setting on remote control, HEAT

(mode), HIGH (Fan), 30°C

(temp.).

2Room temp. is 19°C to 24°C, and

outside air temp. is 5°C or lower.

3Defrost operation has been already

performed once.

[In starting and in stability]

The outdoor unit controls the outdoor fan based upon

the operation signal sent from the indoor unit, and also

controls revolution speed of the compressor motor.

The power coupler (IC20) for 4-way valve is turned on,

and turned off in defrost operation.

(1) Heating capacity control

Calculate the difference between temperature

detected by room temp. sensor every minute and

the set temp. set on “Temp. indicator” and variation

amount of room temp.

Then, obtain the correction amount of the com-

mand signal, and correct the current frequency

command signal.

(2) High-temp. release control

If temperature of the indoor heat exchanger

detected by the indoor heat exchanger sensor is

55°C or higher, compressor motor speed is

gradually lowered to prevent over-temp. rising of

compressed pressure.

If temperature becomes below 48°C, return to

above item (1).

(3) Current release control

The input current of compressor and outdoor fan

motor (Precisely inverter main circuit control

section) which occupies most of air conditioner

input is detected by the outdoor current sensor.

The compressor motor speed is lowered gradually

according to the range of TO (outside air temp.) if

the input current exceeds the current value

determined in each zone as shown in Fig. 8-2-8 so

that the input current does not exceed the set

value.

In case that the current lowered by approx. 0.5A

than each set value, return to above item (1).

Outside air temp. (°C)

16.0

10.3A

10.8A

9.8A

15.5

11.0

10.5

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

FAN

AUTO

FAN

Manual

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

FILE NO. SVM-03008

– 30 –

2) Defrost operation

Operation of the compressor is stopped once,

turn off power coupler for 4-way valves after

10 seconds, and then exchange the 4-way

valves.

After 20 seconds, restart operation of the

compressor. Turn off the outdoor fan just when

the compressor stopped.

If temperature of the indoor heat exchanger

lowered than 38°C, stop the indoor fan.

3) Defrost reset

Resetting operation from defrost to heating is

performed when anyone of the following

conditions is satisfied.

a. Temperature of the outdoor heat exchanger

rose to +8°C or higher.

b. A status that temperature of the outdoor

heat exchanger is +5°C or higher continued

for 80 seconds.

c. Defrost operation continued for 15 minutes.

In resetting defrost operation, the compressor

stops for 50 seconds if defrost has started under

condition a. to c. in item1), but the compressor is

reset to heating operation keeping operated if

defrost has started under condition d. in item 1).

(5) Louver control

When the compressor is turned off by high-temp.

release control, the vertical air flow louvers close

once and then return to the position of previous

time.

8-2-4. Automatic operation

(1) As shown in Fig. 8-2-9, the operation mode

(COOL, DRY, HEAT) is selected according to the

outside temperature and room temperature when

the operation has started.

The operation in Fan mode continues until an

operation mode is selected.

If the room temperature is 20°C or higher when

“AUTO” operation started within 2 hours after

“HEAT” operation had stopped, select an operation

mode after Fan operation of ultra low fan.

In AUTO operation, the set temperature of each

operation can be corrected by the remote

controller in the range of 17 to 30°C.

(2) After selecting the operation mode (COOL, DRY,

HEAT), select an operation mode again when a

status that the compressor was turned off by the

room temperature or outside air temperature

continues for 15 minutes.

(3) Powerful Cool mode control

When the outside temperature is above 32°C and

indoor temperature is above 28°C, select Cool

mode control. In Cool mode, the air flow louver

directs downward. When the room temperature

gains access to the set temperature, it becomes

cool memory position.

Fig. 8-2-9

−2−10+1

15 18 24 32 To

Ts correction by

outside temperature

( To)

Heating with setting

on remote controller

Ts = 25°C

Powerful Cooling/Drying with

setting on remote controller

Ts = 25°C

Cooling/Drying with setting

on remote controller

Ts = 25°C

Monitoring

(Follow to the Fan control in

previous mode when being

selected again.)

FILE NO. SVM-03008

– 31 –

8-3. Temporary Operation

•Temporary Auto operation, existence of Auto

Restart, and Temporary Cooling operation can be

set by the TEMPORARY button of the indoor

controller.

Fig. 8-3-1

Table 8-3-1

8-3-1. Temporary auto operation

•When the TEMPORARY button is pushed, the

Auto operation with set temperature fixed at 25°C

starts. Controlling is same as that of Auto opera-

tion by the remote controller.

•When the TEMPORARY button is pushed again,

the operation stops.

•During Temporary Auto operation, operation by the

remote controller is accepted.

•Using the Auto Restart function, the Temporary

Auto operation starts when power failure is reset.

8-3-2. Temporary cooling operation

•When the TEMPORARY operation button keeps

pushed for 10 seconds, Cooling operation of

which compressor motor speed and the indoor fan

speed are fixed starts.

Compressor motor speed :

13 : 30 rps

Indoor fan speed : Low

•When the TEMPORARY operation button is

pushed again, the operation stops.

•Auto Restart function is unavailable.

TEMPORARY button

OFF → ON

After pushing button

for 3 seconds

After pushing button

for 10 seconds

Control

Temporary Auto operation start

Auto Restart

control select

Temporary Cooling

operation start

FILE NO. SVM-03008

– 32 –

8-4-1. How to set 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.

Push the [TEMPORARY] 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.

8-4. Auto Restart Function

The 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 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.

•When the unit is on standby (Not operating)

•When the unit is in operation

•While this function is being set, if the unit is in

operation, the orange lamp is on.

•This function can not be set if the timer operation

has been selected.

•When the unit is turned on by this function, the

louver will not swing even though it was swinging

automatically before shutting down.

Operation Motions

Push [TEMPORARY] button for more The unit is on standby.

than three seconds.

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

After approx. three seconds,

The unit beeps three times The lamp changes from

and continues to operate. green to orange.

If the unit is not required to operate at this time, push [TEMPORARY]

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

→→

TEMPORARY button

Operation Motions

Push [TEMPORARY] button for more The unit is in operation. The green lamp is on.

than three seconds.

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

After approx. three seconds,

The unit beeps three times.

If the unit is required to operate at this time, push [TEMPORARY]

button once more or use the remote control to turn it on.

→→

TEMPORARY button

•While the filter check lamp is on, the

TEMPORARY button has the function of filter

reset button.

FILE NO. SVM-03008

– 33 –

8-4-3. Power failure during timer operation

When the unit is in timer operation, if it is turned off

because of power failure, the timer operation is

cancelled. Therefore, set the timer operation again.

NOTE:

The Every Timer is reset while a command signal can

be received from the remote controller even if it

stopped due to a power failure.

8-5. Filter Check Lamp

When the elapsed time reaches 1000 hours, the filter

check lamp indicates. After cleaning the filters, turn off

the filter check lamp.

8-4-2. How to cancel 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 control after the main power supply is turned

off.

•When the system is on standby (Not operating)

•When the system is operating

•While this function is being set, if the unit is in operation, the orange lamp is on.

Operation Motions

Push [TEMPORARY] button for more The unit is on standby.

than three seconds.

The unit starts to operate. The orange lamp is on.

After approx. three seconds,

The unit beeps three times The lamp changes from

and continues to operate. orange to orange.

If the unit is not required to operate at this time, push [TEMPORARY]

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

→→

TEMPORARY button

Operation Motions

Push [TEMPORARY] button for more The unit is in operation. The orange lamp is on.

than three seconds.

The unit stops operating. The orange lamp is turned off.

After approx. three seconds,

The unit beeps three times.

If the unit is required to operate at this time, push [TEMPORARY]

button once more or use the remote control to turn it on.

→→

TEMPORARY button

8-5-1. How to turn off filter check lamp

Push [FILTER] button on the remote control.

Or push [TEMPORARY] button on the indoor unit.

Then we have to clarify it.

NOTE :

If [TEMPORARY] button is pushed while the filter

check lamp is not indicating, the indoor unit will start

the automatic operation.

When you want a temporary operation while the filter

lamp lights, put out the lamp once, and then push the

TEMPORARY button.

FILE NO. SVM-03008

– 34 –

8-6. Remote Control and its Functions

8-6-1. Parts name of remote control

1Infrared signal emitter

Transmits a signal to the indoor unit.

2START/STOP button

Push the button to start operation.

(A receiving beep is heard.)

Push the button again to stop operation.

(A receiving beep is heard.)

If no receiving sound is heard from the indoor unit,

push the button twice.

3Mode select button (MODE)

Push this button to select a mode.

Each time you press the button, a mode is

selected in a sequence that goes from A : Auto

changeover control, : Cool, : Dry, : Heat,

: Fan only, and back to A.

(A receiving beep is heard.)

4Temperature button ( )

,....... The set temperature is increased up to

30°C.

9.......The set temperature is dropped down to

17°C.

(A receiving beep is heard.)

5Fan speed button (FAN)

Push this button to select fan speed. When you

select AUTO, the fan speed is automatically

adjusted according to the room temperature.

You can also manually select the desired fan

speed from among five settings.

(LOW , LOW+ , MED , MED+ ,

HIGH )

(A receiving beep is heard.)

6Auto louver button (SWING)

Push this button to swing the louver.

(A receiving beep is heard.)

Push the FIX button to stop the louver swinging.

(A receiving beep is heard.)

7Set louver button (FIX)

Push this button to adjust the air flow direction.

(A receiving beep is heard.)

8Off timer button (OFF)

Push this button to set the OFF timer.

9On timer button (ON)

Push this button to set the ON timer.

!Reserve button (SET)

Push this button to reserve time settings.

(A receiving beep is heard.)

"Cancel button (CLR)

Push this button to cancel ON timer and OFF

timer. (A receiving beep is heard.)

#High power button (Hi-POWER)

Push this button to start the high power operation.

$Memory button (MEMO)

Keep pushing the MEMO button for 2 seconds

from the beginning, or keep pushing the button for

2 seconds after pushing it once for a short time.

Then the set data is stored in the memory and

is displayed.

%Automatic operation button (AUTO)

Push this button to operate the air conditioner

automatically.

&ECO timer button (ECO)

Push this button to start the ECO timer (OFF

timer) operation.

You can select the OFF timer from among four

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

((

(FILTER button

Push this button to turn off the filter cleaning lamp

on the indoor unit.

Push this button after cleaning the air filter.

))

)PRESET button

Push this button to operate the air conditioner

according to settings memorized by the MEMO

button.

~TIMER button

Use this button to change the clock, ON timer, and

OFF timer times.

To forward the time, push the “TIMER ” button.

To set back the time, push the “TIMER ” button.

PRESET

FAN MODE

Hi-POWER

OFF SET CLR

ECO

AUTO

TIMER

CLOCK CHECKRESET

FILTER

FIX

SWING

MEMO

START/STOP

AUTOA

FILE NO. SVM-03008

– 35 –

•In the illustration, all indications are indicated for explanation.

During operation, only the relevant indications will be indicated on the remote control.

8-6-2. Names and functions of indications on

remote control

[Display]

All indications, except for clock time indication, are

indicated by pushing the START/STOP button.

1Transmission mark

This transmission mark , indicates when the

remote controller transmits signals to the indoor

unit.

2Mode display

Indicates the current operation mode.

(AUTO : Automatic control, A : Auto changeover

control, : Cool, : Dry, : Heat, : Fan only)

3Temperature display

Indicates the temperature setting (17 C to 30 C).

When you set the operating mode to : Fan only,

no temperature setting is indicated.

4Louver operation display

Indicates the louver positioning and operation.

Five selectable positions

,,,,

Automatic

Swing

5FAN speed display

Indicates the selected fan speed. AUTO or one of

five fan speed levels (LOW , LOW+ ,

MED , MED+ , HIGH ) can

be indicated.

Indicates AUTO when the operating mode is either

AUTO or : Dry.

6TIMER and clock time display

The time set for timer operation or clock time is

indicated.

The present time is always indicated except for

TIMER operation.

7Hi-POWER display

Indicates when the Hi-POWER operation starts.

Push the Hi-POWER button to start and push it

again to stop the operation.

8 (MEMORY) display

Flashes for 4 seconds when the MEMO button is

pushed during operation.

mark is indicated when keeping the button

depressed for more than 4 seconds while the

mark is flashing.

Push another button to turn off the mark.

9ECO TIMER display

Indicates when the ECO TIMER is in operation.

Each time you push the ECO button, the display

changes in the sequence of 1,3,5 or 9h.

13 2 8

9 67 5

AUTOA

FILE NO. SVM-03008

– 36 –

8-7. Hi POWER Mode ([Hi POWER] button

on the remote control is pushed.)

When [Hi POWER] button is pushed while the indoor

unit is in Auto, Cooling or Heating operation, Hi

POWER mark is indicated on the display of the remote

control 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 tempera-

ture and the room temperature is big, the

horizontal louver moves to the Hi POWER

position automatically. Then when the differ-

ence 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

control does not change.)

•If the difference between the preset tempera-

ture and the room temperature is big, the

horizontal louver moves to the Hi POWER

position automatically. Then when the differ-

ence between them gets smaller, the horizontal

louver returns automatically.

(4) The Hi POWER mode can not be set in Dry or Fan

only operation.

– 37 –

FILE NO. SVM-03008

9. INSTALLATION PROCEDURE

9-1. Safety Cautions

CAUTION

•THIS AIR CONDITIONER USES THE NEW HFC REFRGERANT (R410A), WHICH DOES NOT

DESTROY THE OZONE LAYER.

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

the pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22. As well as the adoption of this new

refrigerant, refrigerating machine oil has also been changed. Therefore, during installation work, be sure that

water, dust, former refrigerant, or refrigerating machine oil does not enter into the refrigerating cycle of a

new-refrigerant air conditioner.

To avoid mixing refrigerant and refrigerating machine oil, the sizes of charging port connecting sections on

the main unit are different from those for the conventional refrigerant, and different size tools are also

required. Accordingly, special tools are required for the new refrigerant (R410A) as shown below. For

connecting pipes, use new and clean piping materials with high-pressure withstand capabilities, designed for

R410A only, and ensure that water or dust does not enter. Moreover, do not use any existing piping as its

pressure withstand may be insufficient, and may contain impurities.

New Refrigerant Air conditioner Installation

For general public use

Power supply cord of parts of appliance for outdoor use shall be at least polychloroprene sheathed flexible

cord (design H07RN-F), or cord designation 245 IEC66. (1.5 mm2 or more)

CAUTION

This appliance must be connected to the main power supply by means of 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. (RAS-13UKV-E2 only)

To Disconnect the Appliance from the Main Power Supply

– 38 –

FILE NO. SVM-03008

DANGER

•FOR USE BY QUALIFIED PERSONS ONLY.

•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.

•CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED

WRONGLY, ELECTRIC PARTS MAY BE DAMAGED.

•CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION.

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

FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.

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

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

FURNACE, STOVES, ETC.

•WHEN MOVING THE AIR-CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN, BE VERY

CAREFUL NOT TO GET THE SPECIFIED REFRIGERANT WITH ANY OTHER GASEOUS BODY INTO

THE REFRIGERATION CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT, THE

GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY HIGH AND IT

RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS.

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

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

IS HEATED BY FIRE OR SOMETHING ELSE, IT CAUSES GENERATION OF POISONOUS GAS.

WARNING

•Never modify this unit by removing any of the safety guards or bypassing 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.

•Before doing the electrical work, attach an approved plug to the power supply cord.

Also, make sure the equipment is properly earthed.

•Appliance shall be installed in accordance with national wiring regulations.

If you detect any damage, do not install the unit. Contact your TOSHIBA dealer immediately.

CAUTION

•Exposure of unit to water or other moisture before installation could result in electric shock.

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

•After unpacking the unit, examine it carefully for possible damage.

•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 and discharged air might disturb neighbors.

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

•Please read this installation manual carefully before installing the unit. It contains further important

instructions for proper installation.

– 39 –

FILE NO. SVM-03008

9-1-1. Installation Diagram of Indoor and Outdoor Units

Shield

pipe

Air filter

Hook

(Attach to the front panel)

65 mm or more

1 Installation

plate

170 mm

or more170 mm

or more

For the rear left and left

piping

Insert the cushion between

the indoor unit and wall, and

lift the indoor unit for better

operation.

Wall

Insulate the refrigerant

pipes separately with

insulation, not together.

6 mm thick heat resisting

polyethylene foam

50 mm or more

from wall

Vinyl tape Apply

after carrying out

a drainage test

Extension

drain hose

(Option:

RB–821SW)

200 mm or more

600 mm or more

100 mm or more

from wall

Saddle

Do not allow the drain hose

to get slack.

Make sure to run the drain

hose sloped downward.

Cut the piping

hole sloped

slightly

Left

Rear

left

Right

Rear right

Bottom

right Bottom left

The auxiliary piping can be

connected the left, rear left,

rear right, right, bottom right

or bottom left.

250 mm or more

from wall

6Purifying filter

5 Zeolite filter

Before installing the

wireless remote control

•With the remote control cover

open, load the batteries supplied

correctly, observing their polarity.

2 Wireless remote control

3 Batteries

Cover

2Wireless remote control

8Flat head wood screw

4 Remote control holder

As show in the figure, hang

power cord and connecting

cable downward, and take out it

along piping connection port.

Fig. 9-1-1

– 40 –

FILE NO. SVM-03008

9-1-2. Optional installation parts

Fig. 9-1-2

•Secure the outdoor unit with the fixing bolts and nuts if the unit is likely to be exposed to a strong wind.

•Use ∅8 mm or ∅10 mm anchor bolts and nuts.

•If it is necessary to drain the defrost water, attach drain nipple to the bottom plate of the outdoor unit

before installing it.

Parts name

Refrigerant piping

Liquid side : ∅6.35 mm

Gas side : ∅9.52 mm

Pipe insulating material

(polyethylene foam, 6 mm thick)

Putty, PVC tapes

Part

Code

Q’ty

One

each

One

each

Diffuser

Suction side

Drain hole

600

115

310

– 41 –

FILE NO. SVM-03008

Part

No.

Part name (Q’ty)

Installation plate x 1

Wireless remote control x 1

Battery x 2

Part name (Q’ty)

Remote control holder x 1

Zeolite filter x 1

Purifying filter x 1

Part

No.

Part

No.

Others Name

Owner’s manual

Installation manual

Part name (Q’ty)

Mounting screw ∅4 x 25 s x 6

Flat head wood screw

∅3.1 x 16 s x 2

Drain nipple* x 1

This model is not equipped with an extension drain hose.

Option :

For the extension drain hose, use an optionally available RB-821SW or commercially available one.

9-1-3. Accessory and installation parts

The part marked with asterisk (*) is packaged with the

outdoor unit.

– 42 –

FILE NO. SVM-03008

•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.

9-1-4. Installation/Servicing Tools

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

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 hight 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.

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

—

– 43 –

FILE NO. SVM-03008

9-2. Indoor Unit

9-2-1. Installation place

•A place which provides the spaces around the

indoor unit as shown in the above diagram.

•A place where there is no obstacle near the air inlet

and outlet.

•A place that 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 as top of the

indoor unit comes to at least 2 m height.

Also it must be avoided to put anything on the top of

the indoor unit.

CAUTION

•Direct sunlight to the indoor unit’s wireless

receiver should be avoided.

•The microprocessor in the indoor unit should not

be too close to RF noise sources.

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

•A place where there are no obstacles such as a

curtain that may block the signal from the indoor

unit.

•Do not install the remote control in a place exposed

to direct sunlight or close to a heating source, such

as a stove.

•Keep the remote control at least 1 m apart from the

nearest TV set or stereo equipment. (This is

necessary to prevent image disturbances or noise

interference.)

•The location of the remote control should be

determined as shown below.

Fig. 9-2-1

(Top view)

Indoor unit

* : Axial distance

Reception

range

Reception

range

Remote

control Remote

control

(Side view)

9-2-2. Cutting a hole and mounting installation

plate

When installing the refrigerant pipes from the rear.

Fig. 9-2-2

1. After determining the pipe hole position on the

mounting plate (A), drill the pipe hole (∅65 mm) at

a slight downward slant to the outdoor side.

NOTE:

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

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

ring sold separately.

For installation of the indoor unit, use the paper pattern

on the back.

Fig. 9-2-3

Indoor unit

5 m

45°

75°

* 7 m

7 m

65 mm

100 mm

The center of the pipe

hole is above the arrow.

Pipe hole

Hook

Anchor bolt holes

2 m or more from floor

82.5

170

Pipe

hole

Pipe hole

Indoor unit

Thread

Weight

Hook

7 Mounting screw

Hook 1

Installation

plate

– 44 –

FILE NO. SVM-03008

<When the installation plate is directly mounted on

the wall>

1. Securely fit the installation plate onto the wall by

screwing it in the upper and lower parts to hook up

the indoor unit.

2. To mount the installation plate on a concrete wall

with anchor bolts, utilize the anchor bolt holes as

illustrated in the above figure.

3. Install the installation plate horizontally in the wall.

CAUTION

When installing the installation plate with a

mounting screw, do not use the anchor bolt hole.

Otherwise the unit may fall down and result in

personal injury and property damage.

Fig. 9-2-4

Fig. 9-2-5

Projection

15 mm or less

Clip anchor

(local parts)

5 mm dia. hole

Anchor

bolt

7Mounting

screw

∅4 x 25ss

CAUTION

Failure to firmly install the unit may result in

personal injury and property damage if the unit falls.

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

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

•Insert clip anchors for appropriate mounting screws

NOTE:

•Secure four corners and lower parts of the

installation plate with 4 to 6 mounting screws to

install it.

Installation plate

9-2-3. Electrical work

1. The supply voltage must be the same as the rated

voltage of the air conditioner.

2. Prepare the power source for exclusive use with the

air conditioner.

NOTE:

•Wire type : More than H07RN-F or 245 IEC66

(1.0 mm2 or more)

CAUTION

•This appliance can be connected to the mains in

either of the following two ways.

(1) Connection to fixed wiring :

A switch or circuit breake which disconnects

all poles and has a contact separation of at

least 3 mm must be incorporate in the fixed

wiring. An approved circuit breaker or

switches must 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 works so as to allow a generous

wiring capacity.

– 45 –

FILE NO. SVM-03008

9-2-4. Wiring connection

Wiring of the connecting cable can be carried out

without removing of 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 (according to the local

cords) into the pipe hole on the wall.

4. Take out the connecting cable through the cable

slot on the rear panel so that it protrudes about

15 cm from 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. Fix the terminal cover, rear plate bushing and air

inlet grille on the indoor unit.

CAUTION

•Be sure to refer to the wiring system diagram

labeled inside the front panel.

•Check local electrical cords and also any specific

wiring instructions or limitations.

Fig. 9-2-6

NOTE:

•Wire type : More than H07RN-F or 245 IEC66

(1.0 mm2 or more)

Fig. 9-2-7 Stripping length of connecting cable

Terminal cover

Screw

Cord clamp

Connecting cable

Screw Screw

Terminal block

Earth line

Connecting

cable

Earth line

10 mm

50 mm

80 mm

9-2-5. Piping and drain hose installation

* Since dewing results in a machine trouble, make

sure to insulate both the connecting pipes. (Use

polyethylene foam as insulating material.)

Fig. 9-2-8

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 right side of the front panel for the

bottom left or right connection with a pair of nippers.

2. Changing drain hose

For left connection, bottom-leftward connection and

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

change the drain hose and drain cap.

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

Fig. 9-2-9

Firmly insert drain hose connecting part until hitting on

a heat insulator.

Fig. 9-2-10

Rear right

Rear left

Die-cutting

Front panel slit

Changing

drain hose

Piping preparation

Bottom left

Left

Bottom right

Right

Heat insulator

Drain hose

About 15 cm

– 46 –

FILE NO. SVM-03008

1) Insert hexagonal wrench (∅4 mm) in a center head.

Fig. 9-2-11

2) Firmly insert drains cap.

Fig. 9-2-12

CAUTION

Firmly insert the drain hose and drain cap;

otherwise, water may leak.

•After scribing slits of the front panel with a knife or a

making-off pin, cut them with a pair of nippers or an

equivalent tool.

Fig. 9-2-13

•After scribing slits of the front panel with a knife or a

making-off pin, cut them with a pair of nippers or an

equivalent tool.

Fig. 9-2-14

∅4 mm

Do not apply lubricating oil

(refrigerant machine oil) when

inserting the drain cap. Application

causes deterioration and drain

leakage of the plug.

Insert a hexagon

wrench (∅4 mm)

No gap

Slit

<Left-hand connection with piping>

Bend the connecting pipe so that it is laid within 43 mm

above the wall surface. If the connecting pipe is laid

exceeding 43 mm above the wall surface, the indoor

unit may unstably be set on the wall. When bending the

connecting pipe, make sure to use a spring bender so

as not to crush the pipe.

Bend the connection pipe within a radius of 30 mm

(∅6.35) 40 mm (∅9.52).

To connect the pipe after installation of the unit (figure)

Fig. 9-2-15

NOTE:

If the pipe is bent incorrectly, the indoor unit may

unstably be set 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.

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. 9-2-16

•Carefully arrange pipes so that any pipe does not

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 dewing results in a machine trouble, make

sure to insulate both the connecting pipes. (Use

polyethylene foam as insulating material.)

•When bending a pipe, carefully do it not to crush it.

(To the forefront of flare)

Liquid side

Outward form of indoor unit

R 30 mm or less (∅6.35) R 40 mm or less (∅9.52)

(Use polisin (polyethylene core) or the like for

bending pipe.)

Use the handle of screwdriver, etc.

Gas side

270 mm

170 mm

43 mm

Auxiliary pipes

Indoor unit

Connecting cable

Installation plate

– 47 –

FILE NO. SVM-03008

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

water is drained out of doors.

3. When connecting extension drain hose, insulate the

connecting part of extension drain hose with shield

pipe.

Fig. 9-2-20

CAUTION

Arrange the drain pipe for proper drainage from the

unit.

Improper drainage can result in dew-dropping.

This air conditioner has the structure designed to drain

water collected from dew, which forms on the back of

the indoor unit, to the drain pan.

Therefore, do not store the power cord and other parts

at a height above the drain guide.

Fig. 9-2-21

Inside the room

Drain hose

Shield pipe

Extension drain hose

Wall

Drain guide

Space for pipes

9-2-6. Indoor unit fixing

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 up 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 up on the installation plate.

Fig. 9-2-17

•For detaching the indoor unit from the installation

plate pull the indoor unit toward you while pushing

its bottom up at the specified parts.

Fig. 9-2-18

9-2-7. Drainage

1. Run the drain hose sloped downwards.

NOTE:

•Hole should be made at a slight downward slant on

the outdoor side.

Fig. 9-2-19

PushPush

Hook

1 Installation plate

Hook here

Push

(unhook)

Do not put

the drain

hose end in

the drainage

ditch.

Do not form the

drain hose into

a wavy shape.

Do not put

the drain

hose end

into water.

Do not rise the

drain hose.

50 mm

or more

– 48 –

FILE NO. SVM-03008

9-3-2. Refrigerant piping connection

1. Cut the pipe with a pipe cutter.

Fig. 9-3-2

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

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

Fig. 9-3-3

Rigid (Clutch type)

Imperial (wing nut type)

Align the centers of the connecting pipes and tighten

the flare nut as far as possible with your fingers. Then

tighten the nut with a spanner and torque wrench as

shown in the figure.

Fig. 9-3-4

CAUTION

•Do not apply excess torque.

•Otherwise, the nut may crack depending on the

conditions.

9-3. Outdoor Unit

9-3-1. Installation place

•A place which provides the spaces around the

outdoor unit as shown in the left 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 users neighbors.

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

•A place free of a leakage of combustible gases.

•A place which does not block a passage.

•When the outdoor unit is to be installed in an

elevated position, be sure to secure its feet.

•An allowable length of the connecting pipe is up

15 m.

•An allowable height level is up to 10 m.

•A place where the drain water does not raise any

problem.

CAUTION

1. Install the outdoor unit without anything blocking

the air discharging.

2. When the outdoor unit is installed in a place

exposed always exposed to strong wind like a

coast or on a high storey of a building, secure

the normal fan operation using a duct or a wind

shield.

3. In particularly windy areas, install the unit such

as to avoid 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 as from audio equipment,

welders, and medical equipment.

Fig. 9-3-1

Strong

wind

Outer dia. R410A Conventional

of copper pipe tool used tool used

6.35 0 to 0.5 1.0 to 1.5

9.52 0 to 0.5 1.0 to 1.5

90°

Roughness

Obliquity

Die Pipe

Warp

Outer dia. R410A

of copper pipe

6.35 1.5 to 2.0

9.52 1.5 to 2.0

Flare nutHalf union

Use a wrench to secure. Use a torque wrench to tighten.

Externally

threaded side Internally

threaded side

– 49 –

FILE NO. SVM-03008

9-3-3. Evacuating

After the piping has been connected to the indoor unit,

you can perform the air purge together at once.

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

manual of the vacuum pump.

Be sure to use a vacuum pump with counter-flow

prevention function so that inside oil of the pump does

not flow backward into pipes of the air conditioner

when the pump stops. (If oil inside of the vacuum pump

enters into the air conditioner, which use R410A,

refrigeration cycle trouble may result.)

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 start 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. Then confirm that the compound

pressure gauge reading is –101 kPa (–76 cmHg).

5. Close the low pressure side valve handle of gauge

manifold.

6. Open fully the valve stem of the packed valves

(both side of Gas and Liquid).

7. Remove the charging hose from the service port.

8. Securely tighten the caps on the packed valves.

Fig. 9-3-7

•Tightening torque of flare pipe connections

The operating pressure of R410A is higher than that of

R22. (Approx. 1.6 times).

It is therefore necessary to firmly tighten the flare pipe

connecting sections (which connect the indoor and

outdoor units) up to the specified tightening torque.

Incorrect connections may cause not only a gas

leakage, but also damage to the refrigerant cycle.

Fig. 9-3-5

1. How to shape the pipes

Shape the pipes along the incused line on the

outdoor unit.

2. How to fit position of the pipes

Put the edges of the pipes to the place with a

distance of 85 mm from the incused line.

Fig. 9-3-6

(Unit : N·m)

Outer dia. Tightening torque

of copper pipe

∅6.35 mm 16 to 18 (1.6 to 1.8 kgf·m)

∅9.52 mm 30 to 42 (3.0 to 4.2 kgf·m)

Flare at

indoor unit side

Flare at

outdoor unit side

Incused line

85mm

CAUTION

•KEEP IMPORTANT 4 POINTS FOR PIPING

WORK

(1) Take away dust and moisture (Inside of the

connecting pipes.)

(2) Tight connection (between pipes and unit)

(3) Evacuate the air in the connecting pipes using

VACUUM PUMP.

(4) Check gas leak (connected points)

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

– 50 –

FILE NO. SVM-03008

Fig. 9-3-9

CAUTION

•Wrong wiring connection may cause some

electrical parts burn out.

•Be sure to comply with local codes on running

the wire from indoor unit to outdoor unit (size of

wire and wiring method etc).

•Every wire must be connected firmly.

•This installation fuse (25A D type ) must

be used for the power supply line of this air

conditioner.

•If incorrect or incomplete wiring is carried out, it

will cause an ignition or smoke.

•Prepare the power supply for exclusive use with

the air conditioner.

•This product can be connected to the mains.

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.

NOTE: Connecting cable

•Wire type: More than H07RN-F or 245 IEC66

(1.0 mm2 or more)

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

to open it beyond the stopper.

•Securely tighten the valve stem cap with torque in

the following table:

Fig. 9-3-8

9-3-4. Wiring connection

1. Remove the valve cover from the outdoor unit.

2. Connect the connecting cable to the terminal as

identified with their respective matched numbers on

the terminal block of indoor and outdoor unit.

3. When connecting the connecting cable to the

outdoor unit terminal, make a loop as shown in the

installation diagram of indoor and outdoor unit, to

prevent water coming in the outdoor unit.

4. Insulate the unused cords (conductors) from any

water coming in the outdoor unit. Proceed them so

that they do not touch any electrical or metal parts.

4 mm

Hexagonal wrench

is required.

Terminal block

Connecting cable

Model RAS-13UKV-E2

Power source 50/60 Hz, 220 – 240 V Single phase

Maximum 11A

running current

Installation fuse 25A (D type )

rating

Power cord H07RN-F or 245 IEC66 (1.5 mm2

or more)

Gas side 30 to 42 N·m

(∅9.52 mm) (3.0 to 4.2 kgf·m)

Liquid side 16 to 18 N·m

(∅6.35 mm) (1.6 to 1.8 kgf·m)

Service port 9 to 10 N·m

(0.9 to 1.0 kgf·m)

Power cord

Earth line Earth line

Connecting cable Power cord

30 30

40 40

123

– 51 –

FILE NO. SVM-03008

9-3-5. Gas leak test

Fig. 9-3-10

•Check the flare nut connections for the gas leak

with a gas leak detector or soap water.

9-3-6. Test operation

To switch the TEST RUN (COOL) mode, push

TEMPORARY button for 10 sec.

(The beeper will make a short beep.)

Fig. 9-3-11

9-3-7. 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.

•Press and hold down the TEMPORARY button for

about 3 seconds. After 3 seconds, the electronic

beeper makes three short beeps to tell you the Auto

Restart has been selected.

•To cancel the Auto Restart, follow the steps

described in the section Auto Restart Function of

the Owner’s Manual.

Check places

for outdoor unit

Valve cover

Check places for

indoor unit (Flare

nut connection)

Electric parts

cover

TEMPORARY button

– 52 –

FILE NO. SVM-03008

Inverter cover

P. C. board

(Soldered surface)

Discharging position

(Discharging period

10 seconds or more)

Plug of

soldering

iron

10. HOW TO DIAGNOSE THE TROUBLE

The pulse modulating circuits are mounted to both

indoor and outdoor units. Therefore, diagnose troubles

according to the diagnosis procedure as described

below. (Refer to the check points in servicing written

on the wiring diagrams attached to the indoor/outdoor

units.)

Table 10-1

No. Troubleshooting Procedure Page

1 First Confirmation 52

2 Primary Judgment 53

3 Judgment by Flashing LED 54

of Indoor Unit

4 Self-Diagnosis by Remote Control 55

5 Judgment of Trouble by 58

Every Symptom

6 How to Check Simply the Main Parts 66

Fig. 10-1

NOTE:

A large-capacity electrolytic capacitor is used in the

outdoor unit control (inverter). Therefore, if the power

supply is turned off, charge (charging voltage DC280V)

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.

(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 380 V” is indicated.)

electrolytic capacitor (500µF/400 V) on P.C. board,

and then perform discharging.

10-1. First Confirmation

10-1-1. Confirmation of power supply

Confirm that the power breaker operates (ON)

normally.

10-1-2. Confirmation of power voltage

Confirm that power voltage is AC 220-240 V ± 10%. If

power voltage is not in this range, the unit may not

operate normally.

– 53 –

FILE NO. SVM-03008

10-1-3. 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 control-

ling and maintaining of air conditioner.

10-2. 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 control

(3) Judgment of trouble by every symptom

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

Table 10-1-1

1 When power breaker is turned “ON”,

the operation lamp (Green) of the

indoor unit flashes.

2 Compressor may not operate even if

the room temperature is within range of

compressor-ON.

3 In Dry and ECO. mode, FAN (air flow)

display does not change even though

FAN (air flow select) button is operated.

4 Increasing of compressor motor speed

stops approx. 30 seconds after

operation started, and then compressor

motor speed increases again approx.

30 seconds after.

5 The set value of the remote control

should be below the room temperature.

6 In AUTO mode, the operation mode is

changed.

7 In HEAT mode, the compressor motor

speed does not increase up to the

maximum speed or decreases before

the temperature arrives at the set

temperature.

No. Operation of air conditioner 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 compressor motor speed

is restricted to Max. 41 rps for 2 minutes, and Max.91 rps for 2 minutes

to 3 minutes, respectively after the operation has started.

If the set value is above the room temperature, Cooling operation is

not performed. And check whether battery of the remote control is

consumed or not.

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.

– 54 –

FILE NO. SVM-03008

10-3. 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.

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 control for servicing.

Table 10-3-1

Item

Check

code Block display Description for self-diagnosis

– 55 –

FILE NO. SVM-03008

PRESET

FAN MODE

Hi-POWER

OFF SET CLR

ECO

AUTO

TIMER

CLOCK CHECKRESET

FILTER

FIX

SWING

MEMO

START/STOP

AUTOA

SET CLR

CLOCK CHECKRESET

10-4. Self-Diagnosis by Remote Control

(Check Code)

(1) If the lamps are indicated as shown B to H in

Table 10-3-1, excute the self-diagnosis by the

remote control.

(2) When the remote control is set to the service

mode, the indoor control diagnoses the operation

condition and indicate the information of the

self-diagnosis on the display of the remote control

with the check codes. If a fault is detected, all

lamps on the indoor unit will flashes at 5Hz and it

will beep for 10 seconds (Pi, Pi, Pi....). The timer

lamp usually flashes (5Hz) during self-diagnosis.

10-4-1. How to use remote control in service mode

(1) Push [CHECK] button with a tip of pencil to set the

remote control to the service mode.

•“00” is indicated on the display of the remote

control.

•The timer lamp of the indoor unit flashes

continuously. (5 times per 1 sec.)

(4) Push [START/STOP] button to release the service

mode.

•The display of the remote control returns to as it

was before service mode was engaged.

(2) Push [TIMER 8] button.

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

beep once (Pi) and the display of the remote

control will change as follows:

•Check the unit with all 35 check codes (00 to 22)

as shown in Table 10-4-1.

•Push [TIMER 9] button to change the check

code backward.

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

seconds (Pi, Pi, Pi...).

Note the check code on the display of the remote

control.

•2-digits alphanumeric will be indicated on the

display.

•All lamps on the indoor unit will flash. (5 times

per 1 sec.)

(3) Push [CLR] button. After service finish for clear

service code in memory.

•“7F” is indicated on the display of the remote

control.

00 01 1d 1E02 22

Alphanumeric characters are used for the check code.

is 5. is 6.

is A. is B.

is C. is D.

Fig. 10-4-1

– 56 –

FILE NO. SVM-03008

10-4-2. Caution at servicing

(1) After servicing, push 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.

Table 10-4-1

Block distinction Operation of diagnosis function

Judgment and action

Check Block Check Cause of operation Air conditioner Remarks

code code status

Short-circuit or disconnec-

tion 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

compressor thermo.

Gas shortage

Gas leak

Operation command signal

is not sent to outdoor side.

Operation

continues.

Operation

continues.

All off

Operation

continues.

Operation

continues.

Operation

continues.

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.

Flashes when

trouble is

detected on

operation

command signal,

and normal status

when signal is

reset.

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 P.C. board.

2. When P.C. board is normal, check

the motor.

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 2 and 3 of the

indoor terminal block, replace

inverter P.C. board.

If signal stops between indoor

terminal block 2 and 3, replace

indoor P.C. board.

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.

Indoor

P. C .

board

etc.

Not

displayed

Connec-

ting cable

and serial

signal

– 57 –

FILE NO. SVM-03008

Block distinction Operation of diagnosis function

Judgment and action

Check Block Check Cause of operation Air conditioner Remarks

code code status

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 outdoor temp.

sensor

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

Four-way valve inverse error

(TC sensor value lowered

during heating operation.)

All off

Operation

continues.

All off

Operation

continues.

All off

Operation

continues.

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.

–––

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 outdoor temp. 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 heat exchanger

temp. sensor (TE).

2. Check P.C. board.

When 20 seconds passed after

startup, position-detect circuit error

occurred. : Replace compressor.

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 discharge temp. sensor (TD).

2. Degassing

3. Trouble on P.M.V.

1. Check power voltage. (220-240 V

+10%)

2. Overload operation of

refrigeration cycle

Check installation condition

(Short-circuit of outdoor diffuser.)

1. Check 4-way valve operation.

Ondoor

P. C .

board

Not

displayed

Ondoor

P. C .

board

Others

(including

compres-

sor)

– 58 –

FILE NO. SVM-03008

10-5. Judgment of Trouble by Every Symptom

10-5-1. Indoor unit (Including remote contro)

(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?

Turn off power supply once, and

5 second later, turn it on again.

Is OPERATION lamp flashing?

Is it possible to turn on

power supply by pushing

[START/STOP] button

on remote control?

Is voltage

(DC12 V or 5 V)

indicated on rear of

indoor control

board normal?

Does transmission mark

on remote control flash

normally, and is its signal

transmitted properly?

Is DC310-340 V

supplied to

primary side of

transfer switch?

Are DC15 V, 12 V

and 7 V supplied to

secondary side of

transfer switch?

Are DC15 V, 12 V

and 7 V supplied to

secondary side of

transfeor switch?

Does fan

motor connector

between 1 and 2

short-circuit?

Item by symptoms

Operation

Check Item

Considerable principle cause

Measures

Parts (R01, R04, DB01, C01,

C03, IC01 and T01) are defective.

Remote control is defective.

Refer to (5) Troubleshooting

for remote control .

Turn off breaker once

and turn it on again

after removing motor.

Refer to <Primary check>

or this problem is one step

short of power P.C. board block.

Transfer swith,

IC (IC01) for

power supply or

fan motor is

defective.

Unit operates normally.

Replace main

P.C. board

Replace motor.

Is fuse (F01)

of indoor control

board blown?

Microcomputer

is defective.

NO NO

YES

YES YES

YES

YES YES

•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.

– 59 –

FILE NO. SVM-03008

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

Turn on power supply.

Does operation

lamp flash?

YES YES

NO NO

Is wired connectly to white and black

lead wires of terminal block? Correct wirng.

To item of Power supply

is not turned on .

– 60 –

FILE NO. SVM-03008

(3) Only indoor fan motor does not operate.

(1) Is it possible to detect the power supply voltage (200 – 240 V) between 1 and 2 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 5 minutes after it is turned on,

to prevent a cold air from blowing in.)

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 control.

Turn off indoor unit and remove

connector from motor.

Then push START/STOP button

on remote control 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 5e and 3d

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 5e and 3d

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

5e and 3d of motor

connector (CN10)?

Is it possible to detect

DC 1V or more between

5e and 3d of

motor connector (CN10).

Is it possible to detect

DC 310−340 V between

1e and 3d of motor

connector (CN10).

(Motor connection condition)

Is it possible to detect DC 15 V

between 4e and 3d of

motor connector (CN10).

Is it possible to detect

DC 15 V between

4e and 3d 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

– 61 –

FILE NO. SVM-03008

(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 4 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.

P.C. board

CN10

6 (Blue)

5 (Yellow)

4 (White)

3 (Black)

2 —

1 (Red)

Black

Yellow

Indoor fan starts rotating when power supply is turned on.

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

Measure voltage between 2 (GND:BLACK)

and 3 (V line:YELLOW) of motor connector

(CN10) while indoor fan motor is rotating.

DC 1.0 V or more

P.C. board is defective.

Replace P.C. board.

Under DC 1.0 V

Motor is defective.

Replace motor.

– 62 –

FILE NO. SVM-03008

Press START/STOP

button.

Is transmission

mark indicated?

Press RESET button

on remote control

with tip of pencil.

Is receiver on

indoor unit exposed

to direct sunlight?

Is there any

thyristor fluorescent

light nearby?

Does indoor unit

operate when

moving remote control

near receiver or

indoor unit?

Press START/STOP

button.

Batteries are

exhausted.

Is transmission mark

indicated?

Does indoor unit

beep and operate?

Remote control

is defective.

Does indoor unit

start to operate by

automatic restart

function?

Does radio sound

is affected by

remote control when

a signal is transmitted

at distance of 5 cm

from radio?

P.C. board is

defective.

Keep indoor unit

away from

thyristor

fluorescent light.

Avoid direct

sunlight. Replace

P.C. board. Replace

batteries. Normal

operation Replace

remote control.

The unit does not beep at all.

OPERATION lamp on

indoor unit is not indicated.

Note : After replacing batteries,

press the RESET button

with a tip of a pencil.

YES

NO NO

YES

(5) Troubleshooting for remote control

– 63 –

FILE NO. SVM-03008

Measure gas pressure.

Gas shortage

Pipe clogging

Thermo operation of compressor

Gas circulation amount is down.

Gas leak

10-5-2. Wiring Failure (Interconnecting and serial signal wire)

(1) Outdoor unit does not operate.

1) Is the voltage between indoor terminal block 2 and 3 varied?

Confirm that transmission from indoor to outdoor is correctly performed based on the following 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 V and 60 V.

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 dose 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)

To item of compressor does not operate.

Gas leak

P.M.V. is defective.

Miswiring of connecting wires of indoor/outdoor units

Clogging of pipe and coming-off TC sensor

Refer to the chart in 10-6.

Terminal block on indoor side

S5277G

Terminal block Tester

S5277G or equivalent (G or J type)

(Diode with rated voltage of 400 V

or more is acceptable.)

Red

White

– 64 –

FILE NO. SVM-03008

10-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E

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 ( Pi sound is heard if keeping pushed for 10 seconds.).

The operation enters temporary operation mode which fixes opening degree of P.M.V. and No. of revolution of

compressor. Check condensation at outlet of P.M.V., 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 connector of coil connected to inverter?

Is coil of the pulse modulation valve

(P.M.V.) correctly set?

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

If there is condensation at outlet (1/4 inch=∅6.35mm valve side),

the valve is clogged.

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?

NOTE :

After all the operations stopped by the remote control, the power keeps

being supplied to outdoor unit for approx. 3 minutes. If operating the air

conditioner by remote control again just after all the operations stopped by the

remote control, positioning of the valve is not performed when outdoor unit

is activated because supplying power to the outdoor unit is not interrupted.

After positioning of the valve, activate the compressor and the outdoor fan.

It takes approx. 7 seconds for positioning of the valve, and sound ticktack

(hitting sound to stopper) is heard for approx. 0.5 seconds at least of that

period. As the sound is low, check sound by using screwdriver, etc.

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

NOTE :

The temperature sensors which are used to control electronic control valve

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

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

Set it correctly.

Replace coil valve.

Replace valve.

Add gas.

– 65 –

FILE NO. SVM-03008

10-7. How to Diagnose Trouble in Outdoor Unit

10-7-1. Summarized inner diagnosis of inverter assembly

Diagnosis/Process flowchart Item Contents Summary

Preparation

Check

Operation

Measurement

Check

Stop

Check

Measurement

If fuse was blown,

be sure to check the

electrolytic capacitor

and diode block. (DB01)

•Connect discharge

resistance (approx.

100Ω40W) or soldering

iron (plug) between +, –

terminals of the electrolytic

capacitor (500µF)

of C14 (with printed

CAUTION HIGH VOLT-

AGE) on P.C. board.

OK if 500µF →

DC280 to 380 V

Remove CN300 by pushing

the part an arrow because

CN01 is a connector with

lock.

→Resistance between

phases should be approx.

55 to 77Ω.

→Should be 10MΩ or

more.

Turn “OFF” the power

breaker, and remove 3P

connector which connects

inverter and compressor.

•Check whether 25 A fuse

on the control board

assembly is blown or not.

(F01)

Turn on power breaker, and

operate the air conditioner in

COOL mode by short-circuit

of the timer.

Measure terminal voltage of

electrolytic capacity.

500µF: 400WV x 3

After operation, turn off the

power breaker after 2

minutes 20 seconds passed,

and discharge the electrolytic

capacity by soldering iron.

Check voltage between

motor phases.

•Is not winding

between 1-2, 2-3, or

1-3 opened or

short-circuited?

•Is not frame grounded with

1, 2 or 3?

Discharging position

(Discharging period

10 seconds or more)

Plug of

soldering

iron

A B C

YES

Remove

connector of

compressor.

Check 15 A fuse

(Part No.F01).

Replace fuse.

Check

electrolytic

capacitor,

diode block

(DB01), etc.

Check

terminal voltage

of electrolytic

capacitor.

Check

electrolytic

capacitor,

diode

(DB01), etc.

Does outdoor

fan rotate?

Does LED on control

board flash or go on?

Remove connector

CN300 of outdoor

fan motor, and using

a tester, check

resistance value

between every phase

at motor side

Replace

outdoor

fan motor.

Table 10-7-1

– 66 –

FILE NO. SVM-03008

Check

Operation

→OK if 10MΩ or more →

OK if 0.51Ω → 0.57Ω

(Check by a digital tester.)

a) One or two of three

voltages should be 5 V,

and others should be 0V.

(When all are 0V or 5 V,

it is not accepted.)

b) When rotating the fan

slowly with hands, the

voltage between pins

should move from 0V to 5 V.

(Check it with an analog

tester.)

Check winding resistance

between phases of

compressor, 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 breaker, and

perform the operation. (Stops

though activation is

prompted.)

Check operation within 2

minutes 20 seconds after

activation stopped.

<Output check of fan motor

position detect signal>

While connecting connector

5P (CN301) for position

detection, using a tester,

measure voltage between

1-5. Between 5-4 : 5 V

(2) Inspection procedures

1) When a P.C. board is judged to be defective,

check for disconnection, burning, or discolora-

tion 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 (5 V, 12 V, 15 V),

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.

Diagnosis/Process flowchart Item Contents Summary

}

Check

winding of

compressor.

Check

fan motor

position

detect

signal.

Replace

com-

pressor.

CBA

Replace

outdoor

fan

motor.

Replace control

board assembly.

Replace

control board. Replace

compressor.

Check

compressor

winding

resistance.

10-8. How to Check Simply the Main Parts

10-8-1. 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 connec-

tors on the P.C. board, hold the whole housing.

Do not pull at the lead wire.

– 67 –

FILE NO. SVM-03008

Table 10-8-1

(3) Check procedures

No. Procedure Check points (Symptom) Causes

1 Turn off the power supply and

remove the P.C. board assembly

from electronic parts base. Remove

the connecting cables from the

terminal block.

2 Remove the connector of the motor

and turn on the power supply. If

OPERATION lamp flashes (once

per second), it is not necessary to

check steps (1 to 3) in the right

next column.

3 Push [START/STOP] button once to

start the unit. (Do not set the mode

to Fan Only or On-Timer operation.)

4 Shorten the line of the restart delay

timer and start unit.

5 Push [START/STOP] button once to

start the unit.

•Shorten the time of 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 (compressor) operates

continuously in the above

condition.)

6 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 temperature.

7 Connect the motor connector to the

motor and turn on the power supply.

Start the unit the following condition

•Set the operation mode to FAN.

•Set the fan speed level to HIGH.

(The unit (compressor) operates

continuously in the above

condition.)

Check whether or not the fuse (F01)

is blown.

Check power supply voltage :

1. Between TP2 and TP3

(AC 220-240 V)

2. Between e and d (DC 310-340 V)

3. Between d of C10 and output side

of IC08 (DC 15 V)

4. Between 12 V and GND

5. Between 5 V and GND

Check power supply voltage :

1. Between CN23 and CN24

(DC 15-60 V)

Check whether or not all lamps

(OPERATION, TIMER, PRE. DEF,

FILTER and Hi POWER) are

indicated for 3 seconds and they

return to normal 3 seconds later.

1. Check whether or not the

compressor operates.

2. Check whether or not the

OPERATION lamp flashes.

1. Check whether or not the

compressor operates.

2. Check whether or not the OPERA-

TION lamp flashes.

1. Check it is impossible to detect the

voltage (DC 15 V) between 3 and 4

of the motor terminals.

2. The motor does not operate. (But it

is possible to receive the signal

from the remote control.)

3. The motor rotates but vibrates

strongly.

Impulse voltage was applied or the

indoor fan motor short-circuited.

1. The terminal block or the cross-

over cable is connected wrongly.

2. The capacitor (C01), line filter

(L01), resistor (R01), or the diode

(DB01) is defective.

3. IC01, IC02 and T01 are defective.

4. IC01, IC02 and T01 are defective.

5. IC01, IC02, IC07 and T01 are

defective.

IC03 and IC04 are defective.

The lamps 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

exchanger sensor is loose.

(The connector is disconnected.)

(CN01)

3. The heat exchanger sensor and

the P.C. board are defective.

(Refer to Table 10-4-1.)

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

exchanger sensor short-circuited.

(CN01)

3. The heat exchanger sensor and

the P.C. board are defective.

(Refer to Table 10-4-1.)

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

1. The indoor fan motor is defective

(Protected operation of P.C.

board.)

2. The connection or the motor

connector is loose.

3. The P.C. board is defective.

– 68 –

FILE NO. SVM-03008

10-8-2. P.C. board layout

[1] Sensor characteristic table

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

GND

+12V

+5V

Bottom View

(For the Top View, refer to page 65.)

100

TA, TC, TO, TE, TS

100203040

Temperature (°C)

Resistance value (kΩ)

– 69 –

FILE NO. SVM-03008

1 Room temp. (TA) sensor

Heat exchanger (TC) sensor

2 Remote control

3 Louver motor

MP24GA

4 Indoor fan motor

Disconnect the connector and measure the resistance value with tester.

(Normal temp.)

To item of How to judge whether remote control is good or bad of the Judgment

of trouble by symptom.

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

(Under normal temp. 25°C)

Since judgment of DC motor is difficult on the single motor, refer to 10-5-1. (3)

10-8-3. Indoor unit (Other parts)

No. Part name Checking procedure

10-8-4. Outdoor unit

1 Compressor

(Model : DA91A1F-45F)

2 Outdoor fan motor

(Model : ICF-140-43-1)

3 Compressor thermo. Bimetal type

(Model : US-622KXTMQO-SS)

4 Outdoor temperature sensor

(TO), discharge temperature

sensor (TD), suction temperature

sensor (TS), outdoor heat

exchanger temperature sensor

(TE)

Temperature 10°C 20°C 25°C 30°C 40°C

Sensor

TA, TC (kΩ) 20.7 12.6 10.0 7.9 4.5

No. Part name Checking procedure

White Black

Red

Position Resistance value

1 to 2

1 to 3 380±40Ω

1 to 4

1 to 5

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

Measure the resistance value of winding by using the tester.

For details, refer to Section 10-9.

Check conduction by using the tester.

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

(Normal temperature)

TGa : Heat pump model only.

TO, TS, TE : Refer to the TA, TC characteristic table in Indoor

(Refer to Table 10-8-3, No.1).

Position Resistance value

Yellow - Pink 5 to 20kΩ

Under 20°C

Position Resistance value

Red - White

White - Black 0.51 to 0.57Ω

Black - Red

Temperature 10°C 20°C 30°C 40°C 50°C

Sensor

TA, TC (kΩ) 105 64 41 27 18

– 70 –

FILE NO. SVM-03008

1 Electrolytic capacitor 1. Turn OFF the power supply breaker.

(For raising pressure, smoothing) 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 show in

continuity test by the tester.

C12, C13, C14 → 500µF/400V

2 Converter module 1. Turn OFF the power supply breaker.

2. Discharge all four capacitors completely.

3 Check that the normal rectification characteristics are shown in continuity

test by the tester.

10-8-5. Checking Method for Each Part

Case that product is good

Pointer swings once, and

returns slowly. When

performing test once again

under another polarity, the

pointer should return.

No. Part name Checking procedure

Resistance value

in good product

Diode check IGBT check

Tester rod

−

Resistance value

in good product

Ω

Tester rod

−

– 71 –

FILE NO. SVM-03008

If the resistance value between

1 (Yellow lead) − 4 (Pink lead)

of the connector

(CN301 : Motor position detection)

is 5k to 20kΩ, it is normal.

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 and CN301)

of the outdoor fan motor from the inverter.

(Outdoor P.C. board error)

Fan motor error

YES

CN300

CN301

10-9. 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 ten seconds though it starts 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.

FILE NO. SVM-03008

– 72 –

11-1. Indoor Unit

11. HOW TO REPLACE THE MAIN PARTS

No. Part name Procedures Remarks

24-Screws

2 2

2 Screws

3 Drain guide

5 TC Sensor

6 Screws 4

2-Connectors

3 Left shaft 2 Center shaft

How to remove the front panel

1) Stop operation of the air conditioner and turn off

its main power supply.

2) Pull the air inlet grille toward you to open it and

remove the air inlet grille.

Then remove the 4 screws fixing the front panel.

3) Open the horizontal louver, and then remove the

front panel from the back body by pulling it

toward you.

How to mount the front panel

Mount the front panel in position and make sure

all hooks are locked.

How to remove the electrical part.

1) Remove the front panel with the procedure 1.

2) Remove the screw holding the electrical part

cover.

3) Remove the drain guide.

4) Disconnect the connector (6P) for the fan motor

and the connector (5P) for the louver motor from

the P.C. board assembly.

5) Pull out the TC sensor from the sensor holder.

6) Remove each screw for the ground wire, the

electrical part box and the LED unit. Then

remove the LED unit and the electrical part box

from the main unit.

How to mount the electrical part.

1) Fix the electrical part box by the upper hook of

the back body.

2) Tighten 2 screws on the electrical part box.

3) Connect the 2 connectors and arrange the

wiring same as original condition and then

tighten the screw to fix the LED unit to the back

body.

4) Attach the TC sensor to the holder.

5) Tighten the screw for the ground wire.

6) Mount the drain guide (the TC sensor wire

should be covered with the drain guide).

7) Tighten the screw of the electrical part cover.

1) Remove the front panel and the electrical part

with the procedure 2.

2) Remove the center shaft of the horizontal louver

from the back body.

3) Remove the left shaft from the back body.

4) Remove the horizontal louver from the back

body.

1Front panel

2Electrical part

3Horizontal louver

6 2-Screws

FILE NO. SVM-03008

– 73 –

1) Remove the front panel, electrical part and the

horizontal louver with the procedure 3.

2) Remove the pipe holder on the rear side of the

main unit.

3) Remove 2 screws of the heat exchanger on the

base bearing side.

4) Remove 2 screws of the heat exchanger on the

left side (upper and lower) from the back body,

and then pull out the upper side of the heat

exchanger slowly.

1) Remove the front panel and the electrical part

with the procedure 2.

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

3) Remove 2 screws fixing the motor band (R).

4) Pull out the fan motor.

4Heat exchanger

5Fan motor

2 Pipe holder

3 2-Screws

4 2-Screws

No. Part name Procedures Remarks

Reference

line

Pull out the lead

wires of the fan motor

from this hole.

Reference line

When mouting the fan motor,

put the R end of the connector

cover this reference line.

Connector cover

Mounting the fan motor as shown in

figure below.

FILE NO. SVM-03008

– 74 –

1) Remove the front panel, electrical part,

horizontal louver and the heat exchanger with

the procedure 4.

2) Remove 2 screws of the band motor (L) and

other 2 screws of the band motor (R) and then

remove the cross flow fan.

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

disconnect the fan and the fan motor.

Notice

For position of the fan motor connector and

drawing out of the lead cables, refer to the

procedure 5.

Fix the cross flow fan with the set screw at the

position where the gap between the back body and

the right surface of the cross flow fan is 4.5 mm.

1) Remove the front panel, electrical part,

horizontal louver, heat exchanger and the cross

flow fan with the procedure 5and 6.

2) Remove the 2 screws fixing the base bearing.

3) Remove the bearing from the base bearing.

If the housing protrudes from the base bearing,

put the housing in position and attach the

bearing to the base bearing.

2 2-Screws (R)

2 2-Screws (L)

2 2-Screws

No. Part name Procedures Remarks

6Cross flow fan

7Base bearing

4.5 mm

3 Set screws

FILE NO. SVM-03008

– 75 –

Fuse C01

T01 IC01 C02 R01

R04 CN10

C03

R05

L01

DB01

RY01 CN13

IC03

IC02

CN04

1) Turn the power supply off to stop the operation

of air conditioner.

2) Remove the front panel.

•Remove the 4 fixing screws.

3) Remove the electrical part base.

1Common

procedure

11-2. Microcomputer

Replace the thermal fuse, terminal

block, microcomputer ass’y and the

P.C. board ass’y

<P.C. board layout>

Top View

No. Part name Procedures Remarks

FILE NO. SVM-03008

– 76 –

11-3. Outdoor Unit

1. Detachment

1) Stop operation of the air conditioner, and turn off

the main switch of the breaker for the air

conditioner.

2) Remove the valve cover. (ST1T∅4 x 10s 1 pc.)

•After removing screw, remove the valve cover

pulling it downward.

3) Remove wiring cover (ST1T∅4 x 10s 2 pcs.),

and then remove connecting cable.

4) Remove the upper cabinet.

(ST1T∅4 x 10s 2 pcs.)

•After removing screws, remove the upper

cabinet pulling it upward.

2. Attachment

1) Attach the upper cabinet.

(ST1T∅4 x 10s 2 pcs.)

•Hook the rear side of the upper cabinet to

claw of the rear cabinet, and then put it on the

front cabinet.

2) Perform cabling of connecting cable, and attach

the wiring cover.

•Insert the upper part into the upper cabinet,

insert claw which has been hooked to the

lower part into the square hole, and then fix it

with screw. (ST1T∅4 x 10s 1 pc.)

3) Attach the valve cover. (ST1T∅4 x 10s 1 pc.)

•Insert the upper part to the upper cabinet,

set hook claw of the valve cover to square

holes (at three positions) of the main unit,

and attach it pushing upward.

1. Detachment

1) Perform work of item 1 of 1.

2) Remove screw (ST1T∅4 x 10s 2 pc.) of the

front cabinet and inverter cover and screws

(ST1T∅4 x 10s 3 pcs.) of the front cabinet and

lower part.

•The left side of the front is made to insert to

the rear cabinet, so remove it pulling upward.

2. Attachment

1) Insert claw at the left side of the front into the

rear cabinet.

2) Hook the lower part at the right side of the front

to concave part of the bottom plate. Insert claw

of the rear cabinet into square hole of the front

cabinet.

3) Attach the removed screws to the original

positions.

1Common

procedure

2Front cabinet

No. Part name Procedures Remarks

Upper cabinet

Wiring cover

Valve cover

Square hole

Claw

Concave section

FILE NO. SVM-03008

– 77 –

1) Perform work of item 1 of 1.

2) Remove screw (ST1T∅4 x 10s 2 pc.) 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 in the upper part of the

upper cabinet, perform work of 2.

Be careful to check the inverter because

high-voltage circuit is incorporated in it.

3) Perform discharging by connecting e, d

polarity by discharging resistance (approx.

100Ω40W) or plug of soldering iron to e, d

terminals of the C14 (printed “CAUTION HIGH

VOLTAGE” is attached.) electrolytic capacitor

(500 µF) 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 the ee

e,dd

d polarity with screw-

driver, etc. for discharging.

4) Remove screw (ST1T∅4 x 10s 2 pc.) fixing the

main body and the inverter box.

5) Remove various lead wires from the holder at

upper part of the inverter box and wiring holder

at right side of the terminal block.

6) Remove the lead wire from the bundled part at

left side of the terminal block.

7) Pull the inverter box upward.

8) Disconnect connectors of various lead wires.

Requirement :

As each connector has a lock

mechanism, avoid to remove the

connector by holding the lead wire,

but by holding the connector.

3Inverter

assembly

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.

No. Part name Procedures Remarks

Inverter cover

P. C. board

(Soldered surface)

Discharging position

(Discharging period

10 seconds or more)

Plug of

soldering

iron

Terminal block

Bundled

part

Holder

FILE NO. SVM-03008

– 78 –

1) Disconnect lead wires and connectors

connected from the control board

assembly to other parts.

1. Lead wires

•Connection with terminal block :

3 wires (Black, White, Orange)

•Connection with compressor :

Remove the connector (3P)

•Connection with reactor :

Remove the relay connectors from P07, 08

(2P, White) and P12, 13 (2P, Yellow).

2. Connectors

CN300 : Outdoor fan (3P, White)

CN301 : Outdoor fan position detection

(5P, White)

CN701 : 4-way valve (3P, Yellow)

CN600 : TE sensor (2P, White)

CN601 : TD sensor (3P, White)

CN603 : TS sensor (3P, White)

CN602 : TO sensor (2P, White)

CN500 : Case thermo. (2P, White)

CN703 : Pulse modulating valve

(6P, White)

2) Remove the control board assembly from

P.C. board base.

1. Main control board assembly side

•Remove two claws of P.C. board base, and

remove upward the heat sink with hands.

•Remove three screws fixing the heat sink

and main control board assembly side, and

replace the board with a new one.

1) Perform work of item 1 of 1, 1 and 2, 3.

2) Remove fixed screws fixing to the bottom plate.

(ST1T∅4 x 10s 3 pcs.)

3) Remove fixed screws fixing to the heat

exchanger. (ST1T∅4 x 10s 2 pcs.)

4) Remove fixed screw fixing to the valve mounting

plate. (ST1T∅4 x 10s 1 pc.)

4Control board

assembly

5Rear cabinet

CN300, CN301 and CN701, etc. at the

control board assembly side are

connectors with locks. Therefore,

remove the connector while pushing

the part indicated by an arrow.

No. Part name Procedures Remarks

CN701

CN500

CN703 CN602 CN301

CN300

CN603

CN601 CN600

P.C. board base

P.C. board

When mounting a new board, check

that the board is correctly set in the

groove of base holder of P.C. board

base.

Reactor

FILE NO. SVM-03008

– 79 –

1) Perform work of item 1 of 1 and 2.

2) Remove the flange nut fixing the fan motor and

the propeller fan.

•Flange nut is loosened by turning clockwise.

(To tighten the flange nut, turn counterclock-

wise.)

3) Remove the propeller fan.

4) Disconnect the connector for fan motor from the

inverter.

5) Remove the fixing screws (3 pcs.) holding by

hand so that the fan motor does not fall.

1) Perform work of item 1 of 1 and 2, 3, 4, 5.

2) Extract refrigerant gas.

3) Remove the partition board.

(ST1T∅4 x 10s 2 pcs.)

4) Remove the sound-insulation material.

5) Remove the terminal cover of the

compressor, and disconnect lead wire of the

compressor thermo. and the compressor from

the terminal.

6) Remove pipe connected to the compressor with

a burner.

7) Remove the fixing screw of the bottom plate

and heat exchanger.

(ST1T∅4 x 10s 2 pc.)

8) Remove the fixing screw of the bottom plate

and valve clamping plate.

(ST1T∅4 x 10s 2 pcs.)

9) Pull upward the refrigeration cycle.

10) Remove the nut fixing the compressor to the

bottom plate.

1) Perform work of item 1 of 1 and 3.

2) Remove lead wires clung in holder on the

partition board.

3) Remove the screw fixing the reactor.

(ST1T∅4 x 10s 2 pcs.)

6Fan motor

7Compressor

8Reactor

No. Part name Procedures Remarks

Fan motor

Propeller fan

Flange nut

Valve

clamping

plate

Compressor

thermo.

Compressor

Partition

board

Reactor

FILE NO. SVM-03008

– 80 –

1. Detachment

1) Perform work of item 1 of 1, and 2, 3, 5.

2) Turn the coil clockwise (counterclockwise) by

90 degrees, and remove coil from the pulse

modulating valve.

2. Attachment

1) Set take-out part of the lead wire of coil to the

coil inserting position of the pulse modulating

valve, and attach the coil.

2) Turn the coil by 90 degrees, set surely the

concave part at lower part of the coil to the

positioning hole of the pulse modulating valve,

and then fix the coil.

The pulse modulating valve has A room

side and B room side. After mounting it,

check that coil at B room side (Red

marking is marked on the pulse modulat-

ing valve.) is connected to CN13 of the

control board assembly.

1. Detachment

1) Perform work of item 1 of 1, and 2.

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 claw of the fan guard in the hole of the

front cabinet. Push the hooking claws

(10 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.

9Pulse modulating

valve coil

!Fan guard

No. Part name Procedures Remarks

Take-out part

of lead wire

Notch

Coil inserting

position

Coil inserting

position

Coil fix

position

Positioning

hole

Hooking claw

Minus screwdriver

FILE NO. SVM-03008

– 81 –

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 connector side

and strip and 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.

NOTES:

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.

"Replacement of

temperature

sensor for

servicing only

Common service

parts of sensor

TO, TS, TE, TD

These are parts for

servicing sensors.

Please check that

the accessories

shown in the right

table are packed.

Part name Q’ty Remarks

1 Sensor 1 Length: 3 m

2 Sensor Spring (A) 1 For spare

3 Sensor Spring (B) 1 For spare

4 Thermal constringent tube 3 Including one spare

5 Color tape 1 9 colors

6 Terminal 3

No. Part name Procedures Remarks

Cutting here

Thermal

constringent tube

Soldered part

Dryer

Winding the color tape

200

100

Thermal

sensor part Connector

Cutting here

100

FILE NO. SVM-03008

– 82 –

<P.C. board layout>

MCC-813

FILE NO. SVM-03008

– 83 –

12. EXPLODED VIEWS AND PARTS LIST

12-1. Indoor Unit (E-Parts Assy)

Location Part Description

No. No.

401 43T69319 Temperature Sensor, TC 10kΩ 25°C

402 43T60001 Terminal, 2P AC300V, 20A

403 43T69320 Temperature Sensor, TA 10kΩ 25°C

Location Part Description

No. No.

404 43T62003 Cord Clamp

405 43169079 P.C. Board ASSY, WRS-LED

406 43T69322 P.C. Board, MCC-867

406

405

402

401

404

403

FILE NO. SVM-03008

– 84 –

12-2. Indoor Unit

Location Part Description

No. No.

201 43T00366 Front Panel Assy

202 43T09316 Inlet Grille Assy

203 43T03302 Back Body Assy

204 43T80301 Air Filter

205 43T09309 Horizontal Louver

206 43T08350 LED Panel Assy

207 43T70002 Drain Hose

208 43T79301 Cap Drain

209 43T21321 Motor, Louver, MP24GA, DC 12V

210 43T44320 Refrigeration Cycle Assy

211 43T47006 Pipe, Delivery ∅6.35

212 43T47305 Pipe, Suction ∅8.00

214 43T11301 Pipe Shield

215 43T19302 Holder Sensor

216 43T49302 Plate of EVA Seal

217 43T49006 Holder, Plate EVA Seal

Location Part Description

No. No.

218 43T79302 Guide Drain

219 43T22002 Bearing

220 43T39301 Base, Bearing

221 43T20302 Cross Flow Fan

222 43T39302 Band Motor-L

223 43T21327 Motor, Fan, ICF-340-30-2, DC 340V

224 43T39303 Band Motor-R

225 43T82301 Plate, Installation

226 43T69306 Remote Control

227 43T83003 Holder Remote Control

228 43T85325 Owner’s Manual

229 43T62302 Terminal Cover

231 43T60317 Cord Motor Louver

232 43T60316 Cord Motor Fan

233 43T07303 Holder Pipe

234 43T01003 Mark

217

210

211

212

201

204

202

204

234 206

228

229

205

220

219

215

218

217

214

208

203

225

207

222

223

224

209

231

232

226

Electric Parts

Assembly

227

221

233

216

FILE NO. SVM-03008

– 85 –

12-3. Outdoor Unit

Location Part Description

No. No.

01 43T00377 Cabinet, Front, Assy

02 43T00381 Cabinet, Back, Assy

03 43T42304 Base, Assy

04 43T00380 Cabinet, Upper, Assy

05 43T09318 Guard, Fan

06 43T52310 Cover, Packed Valve

07 43T62311 Cover, Wiring, Assy

08 43T41336 Compressor

09 43T43330 Condenser, Assy

10 43T46317 Valve, Packed 6.35 Dia.

11 43T46320 Valve, Packed 9.52 Dia.

12 43T47020 Bonnet, 6.35 Dia.

13 43T47021 Bonnet, 9.52 Dia.

14 43T03303 Fixing Plate Valve, Assy

15 43T47008 Tube, Capillary

Location Part Description

No. No.

16 43T46326 Body-PMV

17 43T63305 Coil-PMV

18 43T58303 Reactor

19 43T54304 Thermostat, Bimetal

20 43T63005 Holder, Thermostat, Bimetal

21 43T20307 Fan, Propeller

22 43T21334 Motor, Fan

23 43T47001 Nut, Flange

24 42T47324 Bolt, Compressor (M6)

25 43T49308 Cushion, Rubber

26 43T46323 Valve, 4-way

27 43T63304 Coil, 4-way, Assy

28 43T63306 Holder, Sensor

29 43T79305 Nipple, Drain

FILE NO. SVM-03008

– 86 –

12-4. Outdoor Unit (E-Parts Assy)

Location Part Description

No. No.

701 43T62312 Heatsink

702 43T69345 P.C. Board

703 43T60027 Terminal 6P

704 43T60326 Fuse

Location Part Description

No. No.

705 43T50305 Temperature Sensor

706 43T50304 Temperature Sensor

707 43T62313 Base-Plate-P.C.

701 702

707

706

705

703

TE Sensor (∅6)

TS Sensor (∅6)

TO Sensor (∅6)

TD Sensor (∅4)

704

FILE NO. SVM-03008

– 87 –

TOSHIBA CARRIER CORPORATION

Toshiba Ras 13Uav E2 Service Manual

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