Mitsubishi Electronics Split Type Heat Pump Air Conditioners Pmfy P08Nbmu E Users Manual OC341B 1.qxp

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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

No. OC341

REVISED EDITION-B

INDOOR UNIT

CONTENTS

1. TECHNICAL CHANGES·······················2

2. FEATURES ···········································2

3. PART NAMES AND FUNCTIONS ········3

4. SPECIFICATION···································5

5. OUTLINES AND DIMENSIONS············9

6. WIRING DIAGRAM·····························10

REFRIGERANT SYSTEM DIAGRAM

···12

8. MICROPROCESSOR CONTROL·······13

9. TROUBLESHOOTING························20

10. DISASSEMBLY PROCEDURE···········27

11. PARTS LIST········································30

12. RoHS PARTS LIST·····························33

July 2007

R410A / R22

NOTE:

• This manual describes only

service data of the indoor units.

• RoHS compliant products have

<G> mark on the spec name

plate.

• For servicing RoHS compliant

products, refer to the RoHS

PARTS LIST.

Revision:

• PMFY-P06/08/12/15NBMU-E1are

added in REVISED EDITION-B.

• Some descriptions have been

modified.

• Please void OC341 REVISED

EDITION-A.

PMFY-P06NBMU-E PMFY-P06NBMU-E

PMFY-P06NBMU-E1

PMFY-P08NBMU-E PMFY-P08NBMU-E

PMFY-P08NBMU-E1

PMFY-P12NBMU-E PMFY-P12NBMU-E

PMFY-P12NBMU-E1

PMFY-P15NBMU-E PMFY-P15NBMU-E

PMFY-P15NBMU-E1

Indoor unit

[Model names] [Service Ref.]

OC341B--1.qxp 07.7.11 1:29 PM Page 1

2FEATURES

1. Fresh Air Intake

Air recycled indefinitely can become stale and stagnant with air quality suffering significantly. Fresh air is the

answer and it is for this reason that the PMFY- series takes in air directly from outdoors. This fresh air intake

allows you to enjoy the comfort of crisp, refreshing air in the confines of your living or working space.

2. Light and Compact

The main unit weighs only 31 lb. and the panel merely 7 lb. This makes the PMFY- series one of the lightest in the

industry. The unit size is also quite small, having been standardised to a strikingly compact 33-5/8 inch. All of

this make the chore of installation and maintenance that much simpler and easier.

Models Cooling capacity / Heating capacity

PMFY-P06NBMU-E 6,000 / 6,700 Btu/h

PMFY-P08NBMU-E 8,000 / 9,000 Btu/h

PMFY-P12NBMU-E 12,000 / 13,500 Btu/h

PMFY-P15NBMU-E 15,000 / 17,000 Btu/h

Indoor Unit

1TECHNICAL CHANGES

PMFY-P06NBMU-E ➔PMFY-P06NBMU-E1

PMFY-P08NBMU-E ➔PMFY-P08NBMU-E1

PMFY-P12NBMU-E ➔PMFY-P12NBMU-E1

PMFY-P15NBMU-E ➔PMFY-P15NBMU-E1

1. FAN MOTOR(MF) has been changed.

2. CONTROLLER BOARD(I.B) has been changed.

OC341B--1.qxp 07.7.11 1:29 PM Page 2

PART NAMES AND FUNCTIONS

Guide vane

Air flow can be changed to horizontal

by moving the guide vane to the left or right.

Air intake

Returns air from room.

Filters

Remove dust and pollutants

from return air.

Auto Air Swing Vane

Disperses airflow up and

down and adjusts the angle

of airflow direction.

Horizontal Air Outlet

● Indoor Unit

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Temperature setting buttons

Down

Timer Menu button

(Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back

Ahead

Timer On/Off button

(Set Day button)

Opening the

lid

ON/OFF button

Fan Speed button

Filter button

(<Enter> button)

Test Run button

Check button (Clear button)

Airflow Up/Down button

Louver button

( Operation button)

To return operation

number

Ventilation button

( Operation button)

To go to next operation

number

Built-in temperature sensor

● Wired remote controller

Once the controllers are set, the same operation mode can be repeated by simply pressing the ON/OFF button.

OC341B--1.qxp 07.7.11 1:29 PM Page 3

● Wired remote controller

●

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

OFF

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

Note:

“PLEASE WAIT” message

This message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure.

“NOT AVAILABLE” message

This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have).

If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as

far as any of the indoor units is equipped with the function.

Display Section

For purposes of this explanation,

all parts of the display are shown

as lit. During actual operation, only

the relevant items will be lit.

Identifies the current operation

Shows the operating mode, etc.

*Multilanguage display is available.

“Centrally Controlled” indicator

Indicates that operation from the

remote controller has been prohib-

ited by a master controller.

“Timer is Off” indicator

Indicates that the timer is off.

Temperature Setting

Shows the target temperature.

Day-of-Week

Shows the current day of the week.

Time/Timer Display

Shows the current time, unless the simple or Auto Off

timer is set.

If the simple or Auto Off timer is set, the time to be

switched off is shown.

“Sensor” indication

Displayed when the remote controller

sensor is used.

“Locked” indicator

Indicates that remote controller but-

tons have been locked.

“Clean The Filter” indicator

To be displayed on when it is time to

clean the filter.

Timer indicators

The indicator comes on if the corre-

sponding timer is set.

Up/Down Air Direction indica-

tor

Shows the direction of the

outcoming airflow.

“One Hour Only” indicator

Room Temperature display

Shows the room temperature. The room

temperature display range is 46~102°F.

The display blinks if the temperature

is less than

46°F or 102°F

or more.

Louver display

Indicates the action of the swing louver.

Does not appear if the louver is not

running.

(Power On indicator)

Indicates that the power is on.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in

Ventilation mode.

Displayed if the airflow is set to

low or downward during COOL

or DRY mode. (Operation varies

according to model.)

The indicator goes off in one hour,

when the airflow direction also

changes.

OC341B--1.qxp 07.7.11 1:29 PM Page 4

4SPECIFICATION

4-1. SPECIFICATIONS

Note 1. Rating conditions

Cooling: Indoor: D.B. 80°F W.B. 67°F

outdoor: D.B. 95°F W.B. 75°F

Heating: Indoor: D.B. 70°F

outdoor: D.B. 47°F W.B. 43°F

Note 2. The number indicated in < > is for the grille.

W3. Air flow and the noise level are indicated as Low - Medium2 - Medium1 - High.

Item

V·Hz

Btu/h

—

in.

—

CFM

in W.G.

—

[in.

lb.

Cooling capacity

Power

Heat exchanger

Insulator

Air filter

Fan ✕ No

Air flow W3

Pipe

dimensions

Field drain pipe size

Noise level W3

Product weight

Exterior

(munsell symbol)

Fan motor

output

External

static pressure

Liquid

side

Gas

side

Heating capacity

Dimensions

Height

Width

Depth

Electric characteristic

Input

Cooling

Heating

Cooling

Heating

Current

PMFY-P06NBMU-E

PMFY-P06NBMU-E1

PMFY-P08NBMU-E

PMFY-P08NBMU-E1

PMFY-P12NBMU-E

PMFY-P12NBMU-E1

PMFY-P15NBMU-E

PMFY-P15NBMU-E1

Single phase 208-230V 60Hz

6,000

6,700

0.042

0.20

8,000

9,000

0.042

0.20

12,000

13,500

0.044

0.21

15,000

17,000

0.054

0.26

250-280-300-320

32-34-36-37

230-250-280-300

27-30-33-35

270-300-340-370

33-35-37-39

Unit : Galvanized sheets · Standard grilles : ABS resin acrylic coating Munsell<6.4Y 8.9/0.4>

9-1/16<1-3/16>

31-15/16<39-3/8>

15-9/16<18-1/2>

Cross fin

Line flow fan ✕ 1

0.028

Polyethylene sheet

PP honey comb fabric

1/2"

1/4"

1" O.D. (PVC pipe VP-20 connectable)

31<7>

F a n

OC341B--1.qxp 07.7.11 1:29 PM Page 5

4-2. ELECTRICAL PARTS SPECIFICATIONS

Parts name

Service Ref.

Symbol

TH21

TH22

TH23

FUSE

LEV

TB2

TB5

TB15

Resistance 30˚F/15.8k", 50˚F/9.6k", 70˚F/6.0k", 80˚F/4.8k", 90˚F/3.9k", 100˚F/3.2k"

250V 6A

Thermistor resistance 30_F/6.3k", 50_F/3.9k", 70_F/2.5k", 80_F/2.0k", 90_F/1.6k", 100_F/1.3k"

(L1, L2, GR) Rated to 330V 30A

(M1, M2, S) Rated to 250V 20A

(1,2) Rated to 250V 10A

Liquid pipe thermistor

Gas pipe thermistor

Drain pump

Drain sensor

Linear expansion valve

PMFY-P06NBMU-E

PMFY-P06NBMU-E1

PMFY-P08NBMU-E

PMFY-P08NBMU-E1

PMFY-P12NBMU-E

PMFY-P12NBMU-E1

PMFY-P15NBMU-E

PMFY-P15NBMU-E1

Room temperature

thermistor

Fuse

(Indoor controller board)

Fan motor

Vane motor

Power supply

terminal block

Transmission

terminal block

DC Brushless Motor

8-pole OUTPUT 28W

PN0H28-MB

MSFJC 20M23

12V/380

PJV-1063

208-240V 50/60Hz

DC12V Stepping motor drive

port dimension [

3.2

(0~2000pulse)

EDM-40YGME

MA-remote controller

terminal block

wNote : Refer to WIRING DIAGRAM for the supplied voltage.

OC341B--1.qxp 07.7.11 1:29 PM Page 6

4-3. AIR CAPACITY TAKEN FROM OUTSIDE

PMFY-P·NBMU-E series are capable of taking air from outside. When taking air from outside, the duct fan is used.

The air capacity should be 20% or less of the airflow SPEC(Hi).

PMFY-P06NBMU-E

PMFY-P06NBMU-E1

PMFY-P08NBMU-E

PMFY-P08NBMU-E1

PMFY-P12NBMU-E

PMFY-P12NBMU-E1

PMFY-P15NBMU-E

PMFY-P15NBMU-E1

300 CFM

320 CFM

370 CFM

60 CFM

64 CFM

74 CFM

Air flow (Hi) Air capacity taken from outsideService Ref.

(Knockout)

4-{1/8

Fresh air intake hole (Knockout)

Fresh air intake hole

90-

{4-

13/16

{

3-15/16

4-1/4

9-13/16 11-3/8

(Unit:inch)

CN51

Multiple remote

controller adapter

PAC-SA88HA-E

Indoor controller board

Distance between indoor

controller board and relay

must be within 33 feet.

Be sure to secure insulation

material by tape, etc.

5Green

Yellow

Orange

Connector (5P)

Indoor unit side Multiple remote

controller adapter

PAC-SA88HA-E Be sure to secure insulation

material by tape, etc.

CN51

indoor unit

board Red

Brown

Installation at site

Curve in the

right graphs

Duct characteristics

at site

Operation in conjunction with duct fan (Booster fan)

●Whenever the indoor unit is operating, the duct fan

operates.

(1)Connect the optional multiple remote controller

adaptor (PAC-SA88HA-E) to the connector CN51

on the indoor controller board.

(2)Drive the relay after connecting the 12V DC relay

between the Yellow and Orange connector lines.

(w)Use a relay of 1W or smaller.

MB: Electromagnetic switch power relay for duct fan.

X: Auxiliary relay (12V DC LY-1F)

How to read curves

0.2

Static pressure (in.W.G.)

0.1

-0.1

-0.2

-0.3

-0.4 010

Air flow (CFM)

Characteristic diagram of air capacity taken from outside of PMFY-P·NBMU-E

30 40 50 60 70 80

2 intake

1 intake

Q…Designed amount of fresh air

intake <CFM>

A…Static pressure loss of fresh air

intake duct system with air flow

amount Q <in. W.G>

B…Forced static pressure at air condi-

tioner inlet with air flow amount Q

<in. W.G>

C…Static pressure of booster fan with

air flow amount Q <in. W.G>

D…Static pressure loss increase

amount of fresh air intake duct

system for air flow amount Q

<in. W.G>

E…Static pressure of indoor unit with

air flow amount Q <in. W.G>

Qa…Estimated amount of fresh air

intake without D <CFM>

OC341B--1.qxp 07.7.11 1:29 PM Page 7

4-4. NOISE CRITERION CURVES

10 63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING

FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PMFY-P06NBMU-E

PMFY-P06NBMU-E1High

NOTCH

Medium1

Medium2

Low

SPL(dB)

LINE

10 63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PMFY-P08NBMU-E

PMFY-P12NBMU-E

PMFY-P08NBMU-E1

PMFY-P12NBMU-E1

High

NOTCH

Medium1

Medium2

Low

SPL(dB)

LINE

10 63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PMFY-P15NBMU-E

PMFY-P15NBMU-E1High

NOTCH

Medium1

Medium2

Low

SPL(dB)

LINE

UNIT

5ft

MICROPHONE

CEILING

OC341B--1.qxp 07.7.11 1:29 PM Page 8

5OUTLINES AND DIMENSIONS

Details of fresh air intake hole

Knockout

4-{1/8(2.8) Burring hole

Fresh air intake hole

4-5/16 (110)

9-1/16(230)

9-1/2

(235) or more

4-5/16

(110)

Suspension bolt(M10 or W 3/8)

Panel(grille):PMP-16BMU

Installation space required around indoor unit

Mounting plate

6-15/16(176)

Panel(grille):PMP-16BMU

Lower view

2-3/8(60) 1-9/16(40)

7-7/8(200)

23-5/8(600)

7-7/8(200)

Top

Air outlet(lower)

1-13/18(46)

1-11/16(43)

13/16(20) 13/16(20)

2-1/16(53)

2-11/16(69)

9-3/8(247)

1-3/16(30)

Right side

Outer line of grille

Center line of unit

29-7/8(759)

1-1/32(26)

31-15/18(811) suspension bolt pitch2-15/18(74.5)

37-13-16(960) ceiling opening13/16(20)

1-1/32(26)

2-15/18(74.5)

13/16(20)

39-3/8(1000) outer side of grille

11/16(17.5) 11/16(17.5)

1-25/32(45)

13-3/8(340) Suspension bolt pitch

1-25/32(45)

16-15/16(430)

Ceiling opening

18-1/2(470)

Outer side of grille

13/16(20)

Terminal block for power supply

Terminal block for transmission

31-15/16(812)

3-3/8(96)

Left side

Front drain pan

Electrical box

Drainage pipe

PVC pipe:

VP-20[O.D.{1"(26)]

Refrigerant pipe(gas)

O.D.{1/2"(12.7)

Refrigerant

pipe(liquid)

O.D.{1/4"(6.35)

Ceiling panel

Drain pan Ceiling

panel

O.D.{1/2"({12.7)

PVC pipe:VP-20[I.D.{31/32"({25)]

O.D.{1/4"({6.35)

O.D.{1-11/16({43)

Drainage piping

Gas pipe

Liquid pipe

Pipe cover

Refrigerant

piping

39-3/8(1000) outer side of grille

18-1/2(470) Outer side of grille

{1-31/32(50)

2-3/16(56)

9-1/16(230)

3-3/8(96)

13/16(20)

13/32(10)

11-7/8(302)

10(254)

7-13/16(198)

5-9/16(141)

29-7/8(759)

15-9/16(395)

90-

{4-

13/6(122)

{3-15/16(

100)

4-1/4

(108)

9-13/16(250) 11-3/8(288.5)

Same line

Terminal block for

remote controller

PMFY-P06NBMU-E PMFY-P06NBMU-E1

PMFY-P08NBMU-E PMFY-P08NBMU-E1

PMFY-P12NBMU-E PMFY-P12NBMU-E1

PMFY-P15NBMU-E PMFY-P15NBMU-E1

Unit : in. (mm)

OC341B--1.qxp 07.7.11 1:29 PM Page 9

6WIRING DIAGRAM

Note

1.At servicing for outdoor unit, always follow the wiring diagram of outdoor unit.

2.In case of using MA-Remote controller, please connect to TB15. (Remote controller wire is non-polar.)

3.In case of using M-NET, please connect to TB5. (Transmission wire is non-polar.)

4.Symbol [S] of TB5 is the shield wire connection.

5.Symbols used in wiring diagram above are, : terminal block, :connecter.

6.The setting of the SW2, SW3 dip switches differs in the capacity for the detail, refer to the fig : w1.

7.Please set the switch SW5 according to the power supply voltage.

CN51

CN52

SW2

SW3

SW4

A.B Address board

SW1

SW5

SW11

SW12

Mode selection

Voltage selection

Address setting 1st digit

Address setting 2nd digit

SW14 Connection No.

Centrally control

Remote Indication

Switch

Capacity code

Mode selection

Model selection

ZNR Varistor

X1 Aux.relay Drain pump

FUSE Fuse (6A / 250V)

LED1 Power supply (I.B)

LED2 Power supply (I.B)

T Transformer

TH21

Thermistor Room temp. detection

(32

/15k", 77

/5.4k")

Pipe temp. detection / Liquid

(32

/15k", 77

/5.4k")

Pipe temp. detection / Gas

(32

1/15k", 77

/5.4k")

LEV Linear expansion valve

TH22

TH23

Fan motor (with inner thermo)

Vane motor

TB15 MA-Remote Controller

[Legend]

Symbol Name

I.B Indoor controller board

CN25

CN27

CN32

Connector Humidifier

Damper

Remote switch

Symbol Name Symbol Name

Drain sensor

Drain water lifting-up mech.

TB2

TB5 Transmission

Terminal

block

Power supply

Models

P06

P08

P12

P15

SW2

123456

OFF

123456

OFF

123456

OFF

123456

OFF

SW3

1234567

OFF

1234567

OFF

123456

OFF

123456

OFF

Mark Meaning Function

Power supply for

MA-Remote controller

Main power supply (Indoor unit:208-230V)

Power on ➝ Lamp is lit.

LED on indoor board for service

LED1

Main power supply

Power supply for MA-Remote controller

on ➝ Lamp is lit.

LED2

MF FAN

(

WHT

)

LED2

LED1

1(BLU)

(M-NET)

CN2M

BLU

TB5

TB2

PULL BOX

FUSE(15A)

BREAKER

(15A)

(

SHIELD)

TO OUTDOOR UNIT

BC CONTROLLER

REMOTE CONTROLLER

DC24-30V

1CN3A

(BLU)

ORN

TB15

TO MA-REMOTE

CONTROLLER

DC8.7-13V

POWER SUPPLY

~ / N 208—230V 60Hz

TO NEXT INDOOR UNIT

3 2 1

(BLK)

GAS

CN29

2 1

(WHT)

LIQUID

CN21

2 1

DS TH23 TH22

(RED)

INTAKE

CN20

(WHT)

LEV

CN60

(GRN)

REMOTE

INDICATION

CN52

2 1 6 5 4 3 2 1

(GRN)

VANE

CN6V

6 5 4 3 2 1 2 1

1 2 3 4 5

TH21

(WHT)

DRAIN

CN31

LEV MV

CN25

2 1

CN27 8

12345678910

SW3

123456

SW2

12345

SW4

OFF

(RED)

ADDRESS

CN81

(RED)

ADDRESS

CN42

(WHT)

REMOTE

SWITCH

CN32

3212 13

(WHT)

CNP

CND

(RED)

FUSE

250V

BRN

RED

ORN

YLW

GRN

BLU

BRN

ORN

YLW

RED

WHT

(WHT)

CENTRALLY

CONTROL

CN51

RED

BLU

GRN / YLW

See fig : w1

8 7 6 5 4 3 2 1

4321

SW14SWC

CONNECTION

No.

SW11

1ST

DIGIT

SW12

2ND

DIGIT

3RD

DIGIT

12345678910

SW1

SW5

230V208V

(RED)

ADDRESS

CN82

(RED)

ADDRESS

CN43

A.B

I.B

<w2>

(w2)Use copper supply wire.

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E

OC341B--1.qxp 07.7.11 1:29 PM Page 10

Note

1.At servicing for outdoor unit, always follow the wiring diagram of outdoor unit.

2.In case of using MA-Remote controller, please connect to TB15. (Remote controller wire is non-polar.)

3.In case of using M-NET, please connect to TB5. (Transmission line is non-polar.)

4.Symbol [S]of TB5 is the shield wire connection.

5.Symbols used in wiring diagram above are, : terminal block, :connector.

6.The setting of the SW2, SW3 dip switches differs in the capacity for the detail, refer to the fig :w1.

7.Please set the switch SW5 according to the power supply voltage.

CN51

CN52

SW2

SW3

SW4

A.B Address board

SW1

SW5

SW11

SW12

Mode selection

Voltage selection

Address setting 1st digit

Address setting 2nd digit

SW14 Connection No.

Centrally control

Remote Indication

Switch

Capacity code

Mode selection

Model selection

ZNR Varistor

X1 Aux.relay Drain pump

FUSE Fuse (6A / 250V)

LED1 Power supply(I.B)

LED2 Power supply(I.B)

T Transformer

TH21

Thermistor Room temp. detection

(32°F/15k

Ω,

77°F/5.4k

Ω)

Pipe temp. detection / Liquid

(32°F/15k

Ω,

77°F/5.4k

Ω)

Pipe temp. detection / Gas

(32°F/15k

Ω,

77°F/5.4k

Ω)

LEV Linear expansion valve

TH22

TH23

Fan motor

Vane motor

TB15 MA-Remote Controller

[Legend]

Symbol Name

I.B Indoor controller board

CN25

CN27

CN32

Connector Humidifier

Damper

Remote switch

Symbol Name Symbol Name

Drain sensor

Drain water lifting-up mech.

TB2

TB5 Transmission

Terminal

block

Power supply

Models

P06

P08

P12

P15

SW2

123456

OFF

123456

OFF

123456

OFF

123456

OFF

SW3

1234567

OFF

1234567

OFF

123456

OFF

123456

OFF

<fig:w1>

Mark Meaning Function

Power supply for

MA-Remote controller

Main power supply (Indoor unit:208-230V)

Power on Lamp is lit.

LED on indoor board for service

LED1

Main power supply

Power supply for MA-Remote controller

on Lamp is lit.

LED2

MF FAN

(WHT)

LED2

LED1

1(BLU)

(M-NET)

CN2M

BLU

TB5

TB2

PULL BOX

FUSE

(15A)

BREAKER

(15A)

(SHIELD)

TO OUTDOOR UNIT

BC CONTROLLER

REMOTE CONTROLLER

DC24-30V

CN3A

(BLU)

ORN

TB15

TO MA-REMOTE

CONTROLLER

DC8.7-13V

POWER SUPPLY

~ / N 208-230V 60Hz

TO NEXT INDOOR UNIT

(BLK)

GAS

CN29

(WHT)

LIQUID

CN21

DS TH23 TH22

(RED)

INTAKE

CN20

(WHT)LEV

CN60

(GRN)

REMOTE

INDICATION

CN52

(GRN)VANE

CN6V

6161

2121212131

TH21

(WHT)

DRAIN

CN31

LEV

CN25 21

CN27 8

12345678910

SW3

123456

SW2

12345

SW4

OFF

(RED)

ADDRESS

CN81

(RED)

ADDRESS

CN42

(WHT)

REMOTE

SWITCH

CN32

(WHT)

CNP

CND

(RED)

FUSE

BRN

RED

ORN

YLW

GRN

BLU

BRN

ORN

YLW

RED

WHT

(WHT)

CENTRALLY

CONTROL

CN51

RED

BLU

GRN / YLW See fig : w1

SW14SWC

CONNECTION

No.

SW11

1ST

DIGIT

SW12

2ND

DIGIT

3RD

DIGIT

12345678910

SW1

SW5

230V208V

(RED)ADDRESS

CN82

(RED)

ADDRESS

CN43

A.B

I.B

<w2>

<w2>Use Copper Supply Wire.

t°t°t°t°

PMFY-P06NBMU-E1PMFY-P08NBMU-E1PMFY-P12NBMU-E1PMFY-P15NBMU-E1

OC341B--1.qxp 07.7.11 1:29 PM Page 11

REFRIGERANT SYSTEM DIAGRAM7

Strainer (#100mesh)

Strainer pipe (#100mesh)

Strainer

(#100mesh)

Strainer

(#50mesh)

Heat exchanger

Thermistor TH21

Thermistor TH23

<Gas pipe temperature

detection>

Thermistor TH22

<Liquid pipe temperature

detection>

Linear expansion valve

w1w2

Gas pipe

Liquid pipe

Flare connection

Gas pipe

Liquid pipe

[1/2"(12.7)

[1/4"(6.35)

Item

Service Ref.

Capillary tube w1

Capillary tube w2

O.D.[4.6 o I.D.[3.4 o R200 O.D.[3.6 o I.D.[2.4 o R200

O.D.[3.6 o I.D.[2.4 o R80

PMFY-P06/ P08/ P12/ P15NBMU-E

PMFY-P06/ P08/ P12/ P15NBMU-E1

PMFY-P06/ P08NBMU-E

PMFY-P06/ P08NBMU-E1

PMFY-P12/ P15NBMU-E

PMFY-P12/ P15NBMU-E1

Unit:in.(mm)

Unit:mm

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E

PMFY-P06NBMU-E1PMFY-P08NBMU-E1PMFY-P12NBMU-E1PMFY-P15NBMU-E1

OC341B--1.qxp 07.7.11 1:29 PM Page 12

8 MICROPROCESSOR CONTROL

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

OFF

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

INDOOR UNIT CONTROL

8-1. COOL OPERATION

1Press POWER ON/OFF button.

2Press the operation MODE button to display COOL.

3Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the or button is

pressed once. Cooling 67 to 87°F.

Control modes Control details

1-1. Functions regulated by temperature

• Room temperature ] desired temperature + 2°F ···Thermo ON

• Room temperature [ desired temperature ···Thermo OFF

1-2. Anti-freezing control

Detected condition : When the liquid pipe temp. (TH22) is 32°F or less in 16

minutes from compressors start up, anti-freezing control

starts and the thermo

stat

OFF.

Released condition : The timer which prevents reactivating is set for 3 minutes,

and anti-freezing control is cancelled when any one of the

following conditions is satisfied.

1Liquid pipe temp. (TH22) turns to be 50°F or above.

2The condition of the thermostat OFF becomes

complete by thermoregulating, etc.

3The operation mode becomes a mode other than COOL.

4 The operation stops.

1-3. Compressor time delay

• 3 minutes minimum off cycle.

By the remote controller setting (switch of 4 speeds)

2. Fan

1. Functions regulated

by temperature

Remarks

Type Fan speed notch

[Low], [Medium2], [Medium1], [High]

4 speeds

To be continued to the next page

OC341B--1.qxp 07.7.11 1:29 PM Page 13

→

Control modes Control details

3-1. Drain pump control

• Always drain pump ON during the COOL and DRY mode operation.

(Regardless of the thermostat ON/ OFF)

• When the operation mode is changed from COOL or DRY to any other mode

(including Stop), the drain pump continues to run for 3 minutes.

Drain sensor function

• The indoor circuit board energizes the drain sensor at a fixed voltage for a fixed

duration. After energizing, the circuit board then compares the drain sensor’s

temperature to the one before energizing, and judges whether the sensor is in

the air or in the water.

Basic control system

• While drain pump is turned on, it will repeat the following control system and judge

whether the sensor is in the air or in the water.

•Drain sensor temperature rise (∆t)

•Temperature of drain sensor before current is applied (T0)

•Temperature of drain sensor after current is applied (T1)

[ ∆t = T1 – T0 ]

(1)Initial setting : Start at COOL mode and horizontal vane.

(2)Vane position : Horizontal →Downward A →Downward B →Downward C→Swing

(3)Restriction of the downward vane setting

When setting the downward vane A, B or C in [Medium1], [Medium2] or [Low] of

the fan speed notch, the vane changes to horizontal position after 1 hour has

passed.

4. Vane

(up/ down vane change)

3. Drain pump

Remarks

✻1

Drain sensor

Indoor controller

board

CN31

✻1

"Only 1 Hr"

appears on the

wired remote

controller.

Timing of

energizing

drain sensor

From the preceding page

OFF

Stand by for

a minute 30

sec. 30

sec.

Detect the

temperature

before

energizing.

(T0) Detect the

temperature

after

energizing.

(T1)

Judge whether

the sensor is in

the air or in the

water.

Stand by for

a minute

·······Repeat

OC341B--1.qxp 07.7.11 1:29 PM Page 14

Control modes Control details

1-1. Dry mode temperature is controlled by TH21.

Dry mode ON Room temperature ] desired temperature + 2°F

Dry mode OFF Room temperature [ desired temperature

1-2. Frozen prevention control

No control function

Indoor fan operation control depends on the compressor conditions.

3. Drain pump

1. Functions regulated

by temperature

Remarks

Room

temperature

3 min. passed since starting operation

Call

Room temperature (Ta)

Dry mode

time (min)

Dry mode

OFF

time (min)

Less than 64°F

Over 64°FON

OFF

Ta ] 83°F

83°F > Ta ] 79°F

79°F > Ta ] 75°F

75°F > Ta

Unconditional

Dry mode OFF

2. Fan

Note: Remote controller setting is not acceptable.

Dry mode

Fan speed notch

OFF

[Low]

Stop

4. Vane

(up/ down vane change)

Same control as COOL operation

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

OFF

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

8-2. DRY OPERATION

1Press POWER ON/OFF button.

2Press the operation MODE button to display DRY.

3Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the or button is

pressed once. Dry 67 to 87°F.

OC341B--1.qxp 07.7.11 1:29 PM Page 15

Control modes Control details

Set by remote controller.

2. Drain pump

Remarks

1. Fan

Type Fan speed notch

4 speeds type [Low], [Medium2], [Medium1], [High]

3. Vane

(up/ down vane change)

2-1. Drain pump control

The drain pump turns ON for the specified amount of time when any of the

following conditions is satisfied:

1 ON for 3 minutes after the operation mode is switched from COOL or DRY to

another operation mode (FAN).

2 ON for 6 minutes after the drain sensor is determined to be submerged

using the liquid level detection method given below.

3 ON for 6 minutes after indoor piping (liquid piping) temperature – indoor

room temperature [ -18°F, AND the drain sensor input is at the short or

open level.

(If condition 2 or 3 is still being met after the drain pump has been turned ON

for 6 minutes, the drain pump is kept ON for a further 6 minutes.)

2-2. Liquid level detection method

The liquid level is detected by determining whether or not the drain sensor is

submerged, based on the amount the temperature rises after self-heating the

sensor. This process is performed if any of the following conditions is satisfied:

1 Drain pump is ON.

2 Indoor piping (liquid piping) temperature – indoor room temperature [ -18°F

3 Indoor piping (liquid piping) temperature or indoor room temperature is at

the short or open level temperature.

4 Every 1 hour after the drain pump has been switched from ON to OFF.

Same as the control performed during the COOL operation, but with no restriction

on the vane's downward blow setting.

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

OFF

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

8-3. FAN OPERATION

1Press POWER ON/OFF button.

2Press the operation MODE button to display FAN.

OC341B--1.qxp 07.7.11 1:29 PM Page 16

Control modes Control details

1-1. Minimum compressor off cycle is 3 minutes.

• Room temperature [ desired temperature -2°F ···Thermo ON

• Room temperature ] desired temperature ···Thermo OFF

1. Functions

regulated by

temperature

Remarks

Controlled by the remote controller (4-speed)

Priority is given to below-mentioned control mode

2-1. Stand by (hot adjust) mode

2-2. Preheating exclusion mode

2-3. Thermo OFF mode (When the compressor off by the thermoregulating)

2-4. Cool air prevention mode (Defrosting mode)

2-1. Stand by (hot adjust) mode

The fan controller becomes the stand by (hot adjust) mode for the following

conditions.

1 When starting the HEAT operation

2 When the thermoregulating function changes from OFF to ON.

3 When releasing the HEAT defrosting operation

2. Fan

A: Stand by (hot adjust) mode start

B: 5 minutes have passed since the condition A or the indoor liquid pipe

temperature turned 95°F or more

C: 2 minutes have passed since the condition A

(Terminating the stand by (hot adjust) mode)

ACB

[Extra Low]

[Low]

Set fan speed by the remote controller

Hot adjust mode ✻1

2-2. Preheating exclusion mode

When the condition changes the auxiliary heater ON to OFF

(thermoregulating or operation stop, etc), the indoor fan operates in [Low] mode for

1 minute.

✻1

"STAND BY"

will be displayed

during the stand

by (hot adjust)

mode.

To be continued to the next page

✻1

This control is

same for the

model without

auxiliary heater.

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

OFF

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

8-4. HEAT OPERATION

1Press POWER ON/OFF button.

2Press the operation MODE button to display HEAT.

3Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the or button is

pressed once. Heating 63 to 83°F.

[DEFROST]

The [DEFROST] symbol is only displayed during the defrost operation.

[STANDBY]

The [STANDBY] symbol is only displayed during hot adjust mode.

OC341B--1.qxp 07.7.11 1:29 PM Page 17

→

Control modes Control details

2. Fan

Remarks

2-3. Thermo OFF mode

When the thermoregulating function changes to OFF, the indoor fan operates in

[Extra low].

2-4. Heat defrosting mode

The indoor fan stops.

No drain pump operation

However, when the control changes from COOL or DRY operation, the drain pump

operates for 3 minutes.

(1) Initial setting : OFF → HEAT···[last setting]

When changing the mode from exception of HEAT to HEAT

operation ···[Downward C]

(2) Vane position :

Horizontal →Downward A →Downward B →Downward C→Swing

(3) Restriction of vane position

1 The vane is horizontally fixed for the following modes.

(The control by the remote controller is temporarily invalidated and controlled by

the unit.)

• Thermo OFF

• Stand by (hot adjust) [Extra low] mode

• Heat defrost mode

3. Drain pump

4. Vane control

(Up/ down vane

change)

From the preceding page

OC341B--1.qxp 07.7.11 1:29 PM Page 18

1. Drain pump

Control modes Control details

HEAT mode for room temperature < Desired temperature

COOL mode for room temperature ] Desired temperature

(1) HEAT mode → COOL mode

Room temperature ] Desired temperature + 3°F or 3 minutes has passed

(2) COOL mode → HEAT mode

Room temperature [ Desired temperature - 3°F or 3 minutes has passed

1. Initial value of

operation mode

Remarks

2. Mode change

Same control as cool operation

3. COOL mode

Same control as heat operation

4. HEAT mode

Control modes Control details

1-1. Drain pump control

The drain pump turns ON for the specified amount of time when any of the

following conditions is satisfied.

(regardless of whether the compressor is ON or OFF)

1 ON for 3 minutes after the operation mode is switched from COOL or DRY to

another operation mode (HEAT mode).

2 ON for 6 minutes after the drain sensor is determined to be submerged using the

liquid level detection method given below.

3 ON for 6 minutes after indoor piping (liquid piping) temperature – indoor room

temperature [ 14°F, and the drain sensor input is at the short or open level.

(If condition 2 or 3 is still being met after the drain pump has been turned ON for 6

minutes, the drain pump is kept ON for a further 6 minutes.)

1-2. Liquid level detection method

The liquid level is detected by determining whether or not the drain sensor is

submerged, based on the amount the temperature rises after self-heating the

sensor.

This process is performed if any of the following conditions is satisfied:

1 Drain pump is ON.

2 Indoor piping (liquid piping) temperature – indoor room temperature [ 14°F

(except during defrosting)

3 Indoor piping (liquid piping) temperature or indoor room temperature is at the

short or open level temperature.

4 Every 1 hour after the drain pump has been switched from ON to OFF.

Remarks

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

OFF

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

8-5. AUTO OPERATION [AUTOMATIC COOL/HEAT CHANGE OVER OPERATION]

1Press POWER ON/OFF button.

2Press the operation MODE button to display AUTO.

3Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the or button is

pressed once. Automatic 67 to 83°F.

When in AUTO mode, the unit will switch from either heat or cool

automatically to maintain the set temperature.

8-6. WHEN UNIT IS STOPPED

OC341B--1.qxp 07.7.11 1:29 PM Page 19

9TROUBLE SHOOTING

9-1. HOW TO CHECK THE PARTS

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E

PMFY-P06NBMU-E1PMFY-P08NBMU-E1PMFY-P12NBMU-E1PMFY-P15NBMU-E1

Parts name Check points

Disconnect the connector then measure the resistance with a tester.

(At the ambient temperature 50°F~86°F)

Disconnect the connector then measure the resistance with a tester.

Measure the resistance between the terminals with a tester.

(At the ambient temperature 68°F~86°F)

Measure the resistance between the terminals with a tester.

(At the ambient temperature 68°F)

Measure the resistance after 3 minutes have passed since the power supply was turned off.

(At the ambient temperature 32°F~140°F

Vane motor (MV)

Linear expansion

valve (LEV)

Drain pump (DP)

Drain sensor (DS)

Refer to the next page for the details.

Refer to the next

page for the details.

Thermistor (TH21)

<Room temperature

detection>

Thermistor (TH22)

<Liquid pipe temperature

detection>

Thermistor (TH23)

<Gas pipe temperature

detection>

Blue

Normal

4.3k"~9.6k"

Abnormal

Open or short

Abnormal

Open or short

Normal

0.6k"~6.0k"

Abnormal

Open or short

Normal

150k" i10%

White-Red Yellow-Brown Orange-Red Blue-Brown

NormalConnector Abnormal

380" i7% Open or short

Normal Abnormal

400"~480"Open or short

Brown — Yellow

Brown — Red

Brown — Orange

Brown — Green

Orange

Red

White

Blue

Brown

Yellow

Orange

Red

Brown

Green

Yellow

OC341B--1.qxp 07.7.11 1:29 PM Page 20

4[4

2[2

1[1

Controller board

Drive circuit

Connector (CN60)

DC12V

Brown

Red

Blue

Orange

Yellow

White

Blue

Brown

Yellow

Orange

Red

White

Linear expansion valve

11Operation summary of the linear expansion valve

• Linear expansion valves open/close through the use of a stepping motor after receiving the pulse signal from the indoor

controller board.

• Valve position can be changed in proportion to the number of pulse signals.

Note : Since the number of the connector at the controller board side and the relay connector are different, follow the color of

the lead wire.

Thermistor <Room temperature detection> (TH21)

Thermistor <Liquid pipe temperature detection> (TH22)

Thermistor <Gas pipe temperature detection> (TH23)

Thermistor R0=15k' ±3%

Fixed number of B=3480K ± 2%

Rt=15exp { 3480( ) }

30_F 15.8k'

50_F 9.6k'

70_F 6.0k'

80_F 4.8k'

90_F 3.9k'

100_F 3.2k'

Drain sensor (DS)

Thermistor R0=6.0k' ±5%

Fixed number of B=3390K ±2%

Rt=6exp { 3390( ) }

30_F 6.3k'

50_F 3.9k'

70_F 2.5k'

80_F 2.0k'

90_F 1.6k'

100_F 1.3k'

140_F 0.6k'

Thermistor for

lower temperature

273+(t-32)/1.8

273

273+(t-32)/1.8

273

Thermistor for

drain sensor

0-20 20 40 60 80 100 120

< Thermistor for lower temperature >

Temperature (°F)

Resistance (k")

20 40 60

100 120 140 170

< Thermistor for drain sensor >

Temperature (°F)

Resistance (k")

OC341B--1.qxp 07.7.11 1:29 PM Page 21

Output

(Phase)

Output

{2ON

{3OFF

{4OFF

OFF

22Linear expansion valve operation

33Trouble shooting

Open

Extra tightening (80~100pulse)

Pulse number

2000 pulse

Opening a valve

all the way

Valve position (capacity)

Closing a valve : 1 → 2 → 3 → 4 → 1

Opening a valve : 4 → 3 → 2 → 1 → 4

The output pulse shifts in above order.

• When linear expansion valve operation stops, all output phase

become OFF.

• At phase interruption or when phase does not shift in order, motor

does not rotate smoothly and motor will lock and vibrate.

• When the switch is turned on, 2200 pulse closing valve signal will be

send till it goes to point Ain order to define the valve position.

• When the valve moves smoothly, there is no sound or vibration

occurring from the linear expansion valves : however, when the

pulse number moves from Eto Aor when the valve is locked, more

sound can be heard than in a normal situation.

• Sound can be detected by placing the ear against the screw driver

handle while putting the screw driver tip to the linear expansion

valve.

LED1k"

Symptom Check points

Operation circuit fail-

ure of the micro

processor

Disconnect the connector on the controller board, then con-

nect LED for checking.

When power is turned on, pulse signals will send for 10

seconds. If the LED does not light or keeps lighting even

after the signals stop, that means some failures in the

operation circuit.

Countermeasures

Exchange the indoor con-

troller board at drive circuit

failure.

Linear expansion

valve mechanism is

locked.

Valve doesn't close

completely.

Wrong connection of

the connector or

contact failure

To check the linear expansion valve, operate the indoor unit

in fan mode and at the same time operate other indoor units

in cooling mode, then check the pipe temperature <liquid

pipe temperature> of the indoor unit by the

outdoor multi controller board operation

monitor. During fan operation, linear

expansion valve is closed completely and if

there is any leaking, detecting temperature

of the thermistor will go lower. If the detect-

ed temperature is much lower than the tem-

perature indicated in the remote controller,

it means the valve is not closed all the way. It is not neces-

sary to exchange the linear expansion valve, if the leakage is

small and not affecting normal operation.

Thermistor

(Liquid pipe)

Linear

expansion

valve

Motor will idle and make a ticking noise when the motor is

operated while the linear expansion valve is locked. This

ticking sound is the sign of the abnormality.

Check the color of lead wire and missing terminal of the con-

nector.

Exchange the linear

expansion valve.

Exchange the linear

expansion valve.

If large amount of refriger-

ant is leaked, exchange

the linear expansion valve.

Disconnect the connector

at the controller board,

then check the continuity.

Measure the resistance between each coil (white-red, yellow-

brown, orange-red, blue-brown) with a tester. It is normal if

the resistance is in the range of 150Ω±10%.

Short or breakage of

the motor coil of the

linear expansion

valve

OC341B--1.qxp 07.7.11 1:29 PM Page 22

9-2. TROUBLESHOOTING

Notes

· High voltage is applied to the connecter (FAN) for the fan motor. Give attention to the service.

· Do not pull out the connector (FAN) for the motor with the power supply on, doing so may result in damage to the board.

Self check

Conditions : The indoor fan does not rotate.

Turn OFF the power supply.

Wiring contact check

Contact of fan motor connector (FAN)

Contact of power supply cable.

Fan motor check

Measure the resistance between the fan motor connecter 1(+) and 3(–).

(With the connector pulled out from the board)

Turn ON the power supply.

Power supply check

Check the voltage of the indoor controller board with the connector (FAN) connected to the board.

Approx. 294~325V DC between the connecter (FAN) 1(+) and 3(–)

Fan motor position sensor signal check

Rotate the fan motor more than one turn slowly and check the voltage between

the connector (FAN) 6(+) and 3(–) with the connector (FAN) connected to the board.

Indoor controller board fuse check

Turn off the power supply and check if there is

any broken wire by using a tester.

Check method of indoor fan motor (fan motor / controller board)

Correct wiring connection.

Replace the fan motor.

Is the resistance 1M" or more?

Replace the fuse.

Replace the fan motor.

Does the voltage repeat 0V DC and 15V DC ?

Replace the indoor controller board.

Is the voltage normal?

Is the fuse normal?

Was contact good?

Yes

OC341B--1.qxp 07.7.11 1:29 PM Page 23

9-3. FUNCTION OF DIP SWITCH

PMFY-P·NBMU-E PMFY-P·NBMU-E

Switch Function Remarks

OFF 123456789

Address board

Operation by switch

ON OFF

Pole

Built-in remote controller

Provided

2,500h

Effective

Fan operation at Heating mode

Low w

Setting air flow

Effective

Filter clogging detection

Filter cleaning sign

Fresh air intake

Humidifier control

Air flow at

Heat thermo OFF

Auto restart function

Power ON/OFF by breaker

Indoor unit

Not provided

100h

Not effective

Thermo ON operation at

Heating mode

Extra low w

Depends on SW1-7

Not effective

Cooling only

Available

Second setting w6

Horizontal angle

Effective

Not effective

—

Heat pump / Cool only

Louver

Vane

Vane swing function

Vane horizontal angle

Vane cooling limit angle setting w4

Heating 4deg. up

Target superheat setting w5

Target sub cool setting w5

Heat pump

Not available

First setting

Down B, C

Not effective

Effective

—

SW1

Function

setting

SW2

Capacity

code

setting

1~6

1~5

SW3

Function

setting

SW4

Model

Selection

(Setting

for

PMFY

series)

Changing the opening of linear

expansion valve when the

thermostat is OFF

Thermistor <Room temperature

detection> position

OFF 123456789

Indoor controller board

(

) At cooling mode, each

angle can be used only

1 hour.

Do not use SW3-9, 10 as trouble

might be caused by the usage

condition.

w6 Second setting

means first setting.

Indoor controller board

Set for each capacity.

Indoor controller board

(

) SW 3-9 setting

PMFY-P06, P08NBMU-E=ON

PMFY-P12, P15NBMU-E=OFF

SW 3-10 setting

PMFY-P06, P08NBMU-E=ON

PMFY-P12, P15NBMU-E=OFF

OFF 12345

OFF

MODELS

PMFY-P06NBMU-E

PMFY-P08NBMU-E

PMFY-P12NBMU-E

PMFY-P15NBMU-E

SW 2 MODELS SW 2

123456

OFF 123456

Under

suspension

Under

suspension

Before

power

supply

Before

power

supply

Effective

timing

Switching remote

controller display Indicating if the

thermo is ON Indicating fan operation

ON/OFF

In case replacing the indoor controller board, make sure to set the switch to the

initial setting, which is shown below.

SW 1-7

OFF

SW 1-8

OFF

SW 1-8

Extra low

Low

Setting air flow

stop

OC341B--1.qxp 07.7.11 1:29 PM Page 24

220V

(208V) 240V

(230V)

Rotary switchRotary switch

SW14

Connection

No.

setting

SW5

Voltage

Selection

SW11

1st digit

address

setting

SW12

2nd digit

address

setting

Address setting should be done when M-NET

remote controller is being used.

This is the switch to be used when the indoor

unit is operated with R2 series outdoor unit

as a set.

If the unit is used at the 230V area,

set the voltage to 230V.

If the unit is used at the 208V, set the voltage

to 208V.

Address board

Address board

Address board

SW12

SW11

SW12 SW11

SW14

220V

(208V) 240V

(230V)

Switch Pole RemarksOperation by switch Effective

timing

Before

power

supply

OC341B--1.qxp 07.7.11 1:29 PM Page 25

9-4. TEST POINT DIAGRAM

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E

PMFY-P06NBMU-E1PMFY-P08NBMU-E1PMFY-P12NBMU-E1PMFY-P15NBMU-E1

LED1

Power supply (I.B)

(Indoor unit :

208-230V)

CNP

Drain pump output

(DP)

Between 11 to 33

208-230V AC

FUSE

6.3A 250V

FAN

Fan motor output

(MF)

CN2M

Connect to the terminal block (TB5)

(M-NET transmission connecting wire)

24-30V DC (non-polar)

CN3A

Connect to the terminal block (TB15)

(MA-Remote controller connecting wire)

Between 11 to 338.7-13V DC (Pin11(+))

CN29

Pipe temperature

thermistor/Gas

(TH23)

CN60

Linear expansion

valve output (LEV)

CN31

Drain sensor (DS)

CN51

Centrally control

SW2

Capacity setting

CN52

Remote indication

CN6V

Vane motor output

(MV)

CN20

Room temperature

thermistor (TH21)

CN25

Connecter

(Humidifier)

CN27

Connector

(Damper)

SW3

Function setting

CN32

Connector

(Remote switch) SW4

Model selection

CND

Connect to the

terminal block (TB2)

(Power supply for

indoor controller

board connecting

wire)

Between 11 to 33

208-230V AC

LED2

Power supply (R.B)

CN21

Pipe temperature

thermistor/Liquid

(TH22)

CN41

HA terminal-A

OC341B--1.qxp 07.7.11 1:29 PM Page 26

DISASSEMBLY PROCEDURE10

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

1. Removing the intake grille

(1) Press the of the air intake grille.(See figure 1)

(2) Put your fingers on both ends of the air intake grille and let

it down after the grille clicks.

PUSH

Opening the air intake grille

(1) Press the of air intake grille, and pull down both

ends with your fingers after the grille clicks.

(See figure 1)

(2) Pull out the handle of air intake grille toward you.

(See figure 2)

(3) Unhook the string, which secures air intake grille.

(See figure 3)

PUSH

Removing the air intake grille

Be careful when removing heavy parts.

Photo 1

Figure 1

Air filter

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E

PMFY-P06NBMU-E1PMFY-P08NBMU-E1PMFY-P12NBMU-E1PMFY-P15NBMU-E1

Figure 2

Figure 3

OC341B--1.qxp 07.7.11 1:29 PM Page 27

3. Removing the nozzle

Note when the nozzle is removed.

· The insulation material (white) which prevents water

drop is mounted to the side of vane motor. Remove the

insulation material before removing nozzle.

(See figure 4)

·After completing the service, re-mount the insulation

material as before as shown in right figure.

·After service, mount the double layer insulation

without fail.

The hard material side should be faced toward the

nozzle. (See figure 4)

(1) Remove the panel.

(2) Remove the room temperature thermistor.

(3) Unhook the claws in the middle of nozzle and remove the

drain pan. (5 screws) (See photo 2)

(4) Remove the nozzle side of the heat exchanger.(2 screws)

(5) Remove the address board cover.

(6) Remove the electrical parts cover.

(7) Disconnect the connector of vane motor.

(8) Remove the insulation material (white) on the right side of

nozzle.

(9)Remove the nozzle. (6 screws)

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

2. Removing the electrical parts box

(1) Remove the panel.

(2) Remove the address board cover.

(3) Remove the electrical parts cover.

(4) Disconnect the connectors of

fan motor, vane motor,

drain pump, room temperature thermistor,

pipe temperature thermistor,

condenser/evaporator temperature thermistor,

and drain sensor on the electrical controller board.

(5) Disconnect the lead wire and earth wire from terminal

block.

(6)Remove the electrical parts box.

4. Removing the vane motor

(1) Remove the nozzle. Refer to above-mentioned 3

Removing the nozzle.

(2) Remove the vane motor.

Photo 5

Photo 4

Photo 3

Photo 2

Vane motor

Nozzle

Vane motor

Nozzle

Drain pan

Hard side of insulation

Insulation material

Electrical parts

Soft side of insulation

Room temperature thermistor

Nozzle

Claw in middle

of nozzle

Electrical parts

cover

Figure 4

Heat exchanger

Address board

cover

Vane motor

OC341B--1.qxp 07.7.11 1:29 PM Page 28

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

5. Removing the drain pump

(1) Remove the panel.

(2) Unhook the claw in the middle of nozzle and remove the

drain pan.

(3) Remove the address board cover.

(4) Remove the electrical parts cover.

(5) Disconnect the connector of drain pump.

(6) Remove the drain hose.

(7) Remove the drain pump.(2 screws)

6. Removing the fan motor and line flow fan

(1) Remove the panel.

(2) Unhook the claw in the middle of nozzle and remove the

drain pan.

(3) Unscrew 2 screws at the nozzle side of the heat exchanger.

(4) Remove the address board cover.

(5) Remove the electrical parts cover.

(6) Disconnect the connector of vane motor, fan motor and

drain pump.

(7) Remove the nozzle side of the heat exchanger.(2 screws)

(8) Remove the nozzle.

(9) Remove the drain pump.

(10) Unscrew 2 screws in the motor support.

(11) Remove the fan motor and line flow fan. (The fan motor

and line flow fan can be removed without removing the

heat exchanger.)

Photo 6 Drain pump

Fan motor

Drain sensor

Photo 7

Fan motor

Line flow fan

7. Removing the thermistor<Room temperature detection>

(1) Remove the panel.

(2) Remove the address board cover.

(3) Remove the electrical parts cover.

(4) Remove the thermistor. <intake temperature detector>

(5) Disconnect the lead wire from the cord clamp. (5 points)

(6) Disconnect the connector (CN20) on the indoor controller

board.

8. Removing the thermistor

(1) Remove the panel.

(2) Remove the address board cover.

(3) Remove the electrical parts cover.

(4) Remove the drain pan.

(5) Remove the thermistor <Gas pipe temperature detection>

/<Liquid pipe temperature detection>.

(6) Disconnect the lead wire from the cord clamp.

(7) Disconnect the connector (CN21)/(CN29) on the indoor

controller board.

OC341B--1.qxp 07.7.11 1:29 PM Page 29

11 PARTS LIST (non-RoHS compliant)

PANEL PARTS FOR

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E

PMP-16BMU

AIR OUTLET GRILLE

LATCH

PANEL HOOK

GRILLE CATCH

L.L.FILTER

INTAKE GRILLE

GRILLE CATCH

RECEIVER COVER

MAGNET

SCREW CAP

No. Part No. Part Name Specification

Q'ty/set Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

PMP-16BMU

T7W E11 003

R01 E00 055

R01 E00 099

R01 E01 054

R01 E01 500

R01 E02 500

TW7 E01 691

R01 E00 054

R01 E00 648

R01 E00 044

R01 E00 096

10 11

OC341B--1.qxp 07.7.11 1:29 PM Page 30

FUNCTIONAL PARTS

PMFY-P06NBMU-E

PMFY-P08NBMU-E

PMFY-P12NBMU-E

PMFY-P15NBMU-E

PMFY-P · NBMU-E

TH21

TH22

TH23

LEV

BEARING MOUNT

SLEEVE BEARING

LINE FLOW FAN

STABILIZER ASSY

VANE SLEEVE

HEAT EXCHANGER

DRAIN PAN ASSY

THERMISTOR

GUIDE VANE

THERMISTOR

LINEAR EXPANSION VALVE

VANE

VANE MOTOR

CASING ASSY

SENSOR HOLDER

DRAIN SENSOR

DRAIN PUMP

MOTOR SUPPORT

FAN MOTOR

RUBBER MOUNT

DRAIN PIPE ASSY

SCREW ASSY

ROOM

LIQUID

GAS

No. Part No. Part Name Specification

Q'ty/set Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

06/ 08 12/ 15

R01 22A 102

R01 005 103

R01 E02 114

R01 E00 079

R01 E00 092

T7W K08 480

T7W K09 480

R01 E10 529

R01 E00 202

R01 E00 038

R01 E01 202

R01 E03 202

R01 E66 401

R01 E01 002

R01 E01 223

R01 E00 110

R01 31K 241

R01 E01 266

T7W E07 355

R01 E00 130

R01 E14 220

R01 E07 105

R01 E00 527

R01 E01 673

Part number that is circled is not shown in the figure.

OC341B--2.qxp 07.7.11 1:30 PM Page 31

ELECTRICAL PARTS

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E

TB2

TB5

TB15

A.B

I.B

TERMINAL BLOCK

ADDRESS BOARD

CABLE ASSY

INDOOR CONTROLLER BOARD

3P (L1,L2,G)

3P (M1,M2,S)

2P(1,2)

with POWER BOARD

No. Part No. Part Name Specification

Q'ty/set Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

PMFY-P

06/08/12/15

NBMU-E

T7W E11 716

T7W E17 716

R01 556 246

T7W E00 294

R01 E00 304

T7W E43 310

CNP

FAN

CN60 CN6V

RG79L094H01

OC341B--2.qxp 07.7.11 1:30 PM Page 32

12 RoHS PARTS LIST

PANEL PARTS FOR

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E

PMFY-P06NBMU-E1PMFY-P08NBMU-E1PMFY-P12NBMU-E1PMFY-P15NBMU-E1

PMP-16BMU

AIR OUTLET GRILLE

LATCH

PANEL HOOK

GRILLE CATCH

L.L.FILTER

INTAKE GRILLE

GRILLE CATCH

RECEIVER COVER

MAGNET

SCREW CAP

No.

RoHS

Part No. Part Name Specification

Q'ty/set Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

PMP-16BMU

T7W E16 003

R01 E01 055

R01 E01 099

R01 E07 054

R01 E14 500

R01 E15 500

T7W E04 691

R01 E06 054

R01 E01 648

R01 E01 044

R01 E04 096

10 11

OC341B--2.qxp 07.7.11 1:30 PM Page 33

FUNCTIONAL PARTS

PMFY-P06NBMU-E

PMFY-P08NBMU-E

PMFY-P12NBMU-E

PMFY-P15NBMU-E

PMFY-P06NBMU-E1

PMFY-P08NBMU-E1

PMFY-P12NBMU-E1

PMFY-P15NBMU-E1

PMFY-

TH21

TH22

TH23

LEV

BEARING MOUNT

SLEEVE BEARING

LINE FLOW FAN

STABILIZER ASSY

VANE SLEEVE

HEAT EXCHANGER

DRAIN PAN ASSY

THERMISTOR

GUIDE VANE

THERMISTOR

LINEAR EXPANSION VALVE

VANE

VANE MOTOR

CASING ASSY

SENSOR HOLDER

DRAIN SENSOR

DRAIN PUMP

MOTOR SUPPORT

FAN MOTOR

RUBBER MOUNT

DRAIN PIPE ASSY

SCREW ASSY

ROOM

LIQUID

GAS

No.

RoHS

Part No. Part Name Specification

Q'ty/set Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

06/08 12/15

R01 23A 102

R01 E04 103

R01 E32 114

R01 E01 079

R01 E02 092

T7W H08 480

T7W H09 480

R01 E30 529

R01 H12 202

R01 E03 038

R01 H16 202

R01 H17 202

R01 H06 401

R01 E16 002

R01 E18 223

R01 E05 110

R01 32K 241

R01 E11 266

T7W E11 355

R01 E35 130

R01 E24 220

R01 E45 220

R01 E13 105

R01 E05 527

R01 E03 673

P·NBMU-E P·NBMU-E1

Part number that is circled is not shown in the figure.

OC341B--2.qxp 07.7.11 1:30 PM Page 34

ELECTRICAL PARTS

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E

PMFY-P06NBMU-E1PMFY-P08NBMU-E1PMFY-P12NBMU-E1PMFY-P15NBMU-E1

TB2

TB5

TB15

A.B

FUSE

I.B

TERMINAL BLOCK

ADDRESS BOARD

CABLE ASSY

FUSE

INDOOR CONTROLLER BOARD

3P (L1,L2,G)

3P (M1,M2,S)

2P(1,2)

250V, 6A

No.

RoHS

Part No. Part Name Specification

Q'ty/set Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

PMFY-P06/08/12/15

NBMU-E

NBMU-E1

T7W E41 716

R01 E27 246

R01 E21 246

T7W E01 294

R01 E07 304

T7W 420 239

T7W E59 310

T7W E67 310

CNP

FAN

CN60 CN6V

RG79L094H01

OC341B--2.qxp 07.7.11 1:30 PM Page 35

HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN

Distributed in Jul. 2007. No. OC341 REVISED EDITION-B PDF 9

Distributed in Aug. 2006. No. OC341 REVISED EDITION-A PDF 9

Distributed in Jun. 2005. No. OC341 PDF 10

Made in Japan

New publication, effective Jul. 2007

Specifications subject to change without notice

OC341B--2.qxp 07.7.11 1:30 PM Page 36

Mitsubishi Electronics Split Type Heat Pump Air Conditioners Pmfy P08Nbmu E Users Manual OC341B 1.qxp

PMFY-P12NBMU-E to the manual 9d0af49a-8359-41a4-82b3-f631e05bdb02

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