Mitsubishi PEFY-P20VMA(L)-E, PEFY-P25VMA(L)-E, PEFY-P32VMA(L)-E, PEFY-P40VMA(L)-E, PEFY-P50VMA(L)-E Service Manual

Air-Conditioners

TECHNICAL & SERVICE MANUAL

2009

Models

PEFY-P20VMA(L)-E, PEFY-P71VMA(L)-E
PEFY-P25VMA(L)-E, PEFY-P80VMA(L)-E
PEFY-P32VMA(L)-E, PEFY-P100VMA(L)-E
PEFY-P40VMA(L)-E, PEFY-P125VMA(L)-E
PEFY-P50VMA(L)-E, PEFY-P140VMA(L)-E
PEFY-P63VMA(L)-E

For use with R410A, R407C, & R22

Safety Precautions

Read before installation and performing electrical work

Thoroughly read the following safety precautions prior to installation.
Observe these safety precautions for your safety.
This equipment may have adverse effects on the equipment on the same power supply system.
Contact the local power authority before connecting to the system.

Symbol explanations

WARNING

This symbol indicates that failure to follow the instructions exactly as stated poses the risk of serious injury or death.

CAUTION

This symbol indicates that failure to follow the instructions exactly as stated poses the risk of serious injury or dam-

age to the unit.

Indicates an action that must be avoided.

Indicates important instructions.

Indicates a parts that requires grounding.

Indicates that caution must be taken with rotating parts. (This symbol is on the main unit label.) <Color: Yellow>

Indicates that the parts that are marked with this symbol pose a risk of electric shock. (This symbol is on the main
unit label.) <Color: Yellow>

WARNING

Carefully read the labels affixed to the main unit.

WARNING

Ask your dealer or a qualified technician to install the unit.

Improper installation by the user may result in water leak­age, electric shock, or fire.

Properly install the unit on a surface that can withstand its
weight.

Unit installed on an unstable surface may fall and cause in­jury.

Only use specified cables. Securely connect each cable so
that the terminals do not carry the weight of the cable.

Improperly connected cables may produce heat and start a
fire.

Take appropriate safety measures against wind gusts and
earthquakes to prevent the unit from toppling over.

Improper installation may cause the unit to topple over and
cause injury or damage to the unit.

Only use accessories (i.e., air cleaners, humidifiers, electric
heaters) recommended by Mitsubishi Electric.

Do not make any modifications or alterations to the unit.
Consult your dealer for repair.

Improper repair may result in water leakage, electric shock,
or fire.

Do not touch the heat exchanger fins with bare hands.

The fins are sharp and pose a risk of cuts.

In the event of a refrigerant leak, thoroughly ventilate the
room.

If gaseous refrigerant leaks out and comes in contact with
an open flame, toxic gases will be generated.

Properly install the unit according to the instructions in the
Installation Manual.

Improper installation may result in water leakage, electric
shock, or fire.

Have all electrical work performed by an authorized electri­cian according to the local regulations and the instructions
in this manual. Use a dedicated circuit.

Insufficient power supply capacity or improper installation
of the unit may result in malfunctions of the unit, electric
shock, or fire.

HWE0812A GB

ii

WARNING

Keep electrical parts away from water.

Wet electrical parts pose a risk of electric shock, smoke, or
fire.

Securely attach the control box cover.

If the cover is not installed properly, dust or water may infil­trate and pose a risk of electric shock, smoke, or fire.

Only use the type of refrigerant that is indicated on the unit
when installing or relocating the unit.

Infiltration of any other types of refrigerant or air into the unit
may adversely affect the refrigerant cycle and may cause
the pipes to burst or explode.

When installing the unit in a small space, take appropriate
precautions to prevent leaked refrigerant from reaching the
limiting concentration.

Leaked refrigerant gas will displace oxygen and may cause
oxygen starvation. Consult your dealer before installing the
unit.

Consult your dealer or a qualified technician when moving
or reinstalling the unit.

Improper installation may result in water leakage, electric
shock, or fire.

After completing the service work, check for a refrigerant
leak.

If leaked refrigerant is exposed to a heat source, such as a
fan heater, stove, or electric grill, toxic gases will be gener­ated.

Do not try to defeat the safety features of the unit.

Forced operation of the pressure switch or the temperature
switch by defeating the safety features for these devices, or
the use of accessories other than the ones that are recom­mended by Mitsubishi Electric may result in smoke, fire, or
explosion.

Consult your dealer for proper disposal method.

Do not use a leak detection additive.

Precautions for handling units for use with R410A

CAUTION

Do not use the existing refrigerant piping.

A large amount of chlorine that may be contained in the re­sidual refrigerant and refrigerator oil in the existing piping
may cause the refrigerator oil in the new unit to deteriorate.

Use refrigerant piping materials made of phosphorus deox­idized copper. Keep the inner and outer surfaces of the
pipes clean and free of such contaminants as sulfur, oxides,
dust, dirt, shaving particles, oil, and moisture.

Contaminants in the refrigerant piping may cause the refrig­erator oil to deteriorate.

Store the piping materials indoors, and keep both ends of
the pipes sealed until immediately before brazing. (Keep el­bows and other joints wrapped in plastic.)

Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerator oil to deteriorate or cause the
compressor to malfunction.

Use a small amount of ester oil, ether oil, or alkyl benzene
to coat flares and flanges.

Infiltration of a large amount of mineral oil may cause the re­frigerator oil to deteriorate.

Charge the system with refrigerant in the liquid phase.

If gaseous refrigerant is drawn out of the cylinder first, the
composition of the remaining refrigerant in the cylinder will
change and become unsuitable for use.

Only use R410A.

The use of other types of refrigerant that contain chloride
may cause the refrigerator oil to deteriorate.

Use a vacuum pump with a check valve.

If a vacuum pump that is not equipped with a check valve is
used, the vacuum pump oil may flow into the refrigerant cy­cle and cause the refrigerator oil to deteriorate.

Prepare tools for exclusive use with R 410A. Do not use the
following tools if they have been used with the conventional
refrigerant: gauge manifold, charging hose, gas leak detec­tor, check valve, refrigerant charge base, vacuum gauge,
and refrigerant recovery equipment.

If the refrigerant or the refrigerator oil that may be left on these
tools are mixed in with R410A, it may cause the refrigerator oil
in the new system to deteriorate.
Infiltration of water may cause the refrigerator oil to deteriorate.
Leak detectors for conventional refrigerants will not detect an
R410A leak because R410A is free of chlorine.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of the refrigerant
in the cylinder will change and become unsuitable for use.

Exercise special care when handling tools for use with R410A.

Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerator oil to deteriorate.

HWE0812A GB

ii

CONTENTS

I Features

[1] Features.................................................................................................................................... 1

II Components and Functions

[1] Components and Functions...................................................................................................... 2

III Specfications

[1] Specifications............................................................................................................................ 4

1.Specfications .......................................................................................................................... 4

2.Electrical component specifications........................................................................................ 7

IV Outlines and Dimensions

[1] Outlines and Dimensions.......................................................................................................... 8

V Wiring Diagram

[1] Wiring Diagram ....................................................................................................................... 10

VI Refrigerant System Diagram

[1] Refrigerant system diagram.................................................................................................... 12

VII Troubleshooting

[1] Troubleshooting ...................................................................................................................... 13

1.Check methods..................................................................................................................... 13

2.DC fan motor (fan motor/indoor control board)..................................................................... 17

3.Address switch setting .......................................................................................................... 18

4.Voltage test points on the control board ............................................................................... 19

5.Dipswitch setting (Factory setting)........................................................................................ 20

VIII Disassembly Procedure

[1] Disassembly Procedure.......................................................................................................... 23

1.Control box ........................................................................................................................... 23

2.Thermistor (Intake air) .......................................................................................................... 24

3.Drainpan ............................................................................................................................... 25

4.Thermistor (Gas pipe) (Liquid pipe) ...................................................................................... 26

5.Fan and fan motor ................................................................................................................ 27

6.Heat exchanger .................................................................................................................... 28

HWE0812A GB

HWE0812A GB

[ I Features ]

I Features

[1] Features

Model Cooling capacity/Heating capacity

kW

PEFY-P20VMA(L)-E 2.2/2.5

PEFY-P25VMA(L)-E 2.8/3.2

PEFY-P32VMA(L)-E 3.6/4.0

PEFY-P40VMA(L)-E 4.5/5.0

PEFY-P50VMA(L)-E 5.6/6.3

PEFY-P63VMA(L)-E 7.1/8.0

PEFY-P71VMA(L)-E 8.0/9.0

PEFY-P80VMA(L)-E 9.0/10.0

PEFY-P100VMA(L)-E 11.2/12.5

PEFY-P125VMA(L)-E 14.0/16.0

PEFY-P140VMA(L)-E 16.0/18.0

HWE0812A GB

- 1 -

[ II Components and Functions ]

II Components and Functions

[1] Components and Functions

1. Indoor (Main) Unit

(1) In case of rear inlet (2) In case of bottom inlet

Air inlet

Air outlet Air outlet

Air inlet

2. Remote Controller
[PAR-21MAA]

Once the operation mode is selected, the unit will remain in the selected mode until changed.

(1) Remote Controller Buttons

1 [Set Temperature] Button 7 [Vane Control] Button
2 [Timer Menu] Button 8 [Ventilation] Button

[Monitor/Set] Button [Operation] Button

3 [Mode] Button 9 [Check/Clear] Button

[Back] Button 10 [Test Run] Button

4 [Timer On/Off] Button 11 [Filter] Button

[Set Day] Button [ ] Button

5 [Louver] Button 12 [ON/OFF] Button

[Operation] Button 13 Position of built-in room thermistor

6 [Fan Speed] Button 14 [Set Time] Button

Keep the remote controller out of direct sunlight to ensure accurate measurement of room temperature.
The thermistor at the lower right-hand section of the remote controller must be free from obstructions to ensure accurate mea-

surement of room temperature.

HWE0812A GB

- 2 -

[ II Components and Functions ]

(2) Remote Controller Display

A Current time/Timer time I Louver swing

B Centralized control indicator J Ventilation

C Timer OFF indicator K Filter sign

D Timer mode indicator L Sensor position

E Operation mode display: COOL, DRY, AUTO,

FAN, HEAT

M Room temperature

F Function mode indicator N Vane setting

G Preset temperature O Fan speed

H Power indicator P Operation lamp

HWE0812A GB

- 3 -

[ III Specfications ]

III Specfications

[1] Specifications

1. Specfications

Model PEFY-

P20VMA(L)-E

PEFY-

P25VMA(L)-E

PEFY-

P32VMA(L)-E

PEFY-

P40VMA(L)-E

Power supply Voltage V 1-phase 220-230-240

Frequency Hz 50/60

Cooling capacity

Heating capacity

Power consumption

*1

*1

*2

Cooling kW 0.06(0.04) 0.06(0.04) 0.07(0.05) 0.09(0.07)

kW 2.2 2.8 3.6 4.5

kW 2.5 3.2 4.0 5.0

Heating kW 0.04(0.04) 0.04(0.04) 0.05(0.05) 0.07(0.07)

Current consumption

*2

Cooling kW 0.53(0.42) 0.53(0.42) 0.55(0.44) 0.64(0.53)

Heating kW 0.42(0.42) 0.42(0.42) 0.44(0.44) 0.53(0.53)

External finish Galvanized

Dimensions Height mm 250

Width mm 700 900

Depth mm 732

Net weight

*2

kg 23(22) 26(25)

Heat exchanger Cross fin(Aluminium fin and copper tube)

Fan Type Sirocco fan x 1

Airflow rate
(Low-Mid-High)

External static
pressure

3

m

/min 6.0-7.5-8.5 6.0-7.5-8.5 7.5-9.0-10.5 10.0-12.0-

Pa 35/50/70/100/150

14.0

Motor Output kW 0.085

Air filter PP Honeycomb fabric (washable)

Refrigerant pipe
dimensions (R410A)

Gas (Brazed
connection)

Liquid (Brazed

mm[in.] ø12.7[ø1/2]

mm[in.] ø6.35[ø1/4]

connection)

Refrigerant pipe
dimensions (R22)

Gas (Brazed
connection)

Liquid (Brazed

mm[in.] ø12.7[ø1/2]

mm[in.] ø6.35[ø1/4]

connection)

Drain pipe dimensions mm[in.] O.D. 32[1-1/4]

Operating noise(Low-Mid-High) 35Pa dB (A) 23-24-25 23-24-25 23-25-28 23-26-29

50Pa 23-25-26 23-25-26 23-26-29 23-27-30

2m 2m

Measurement location 1

Measured in anechoic room.

*

Aux. duct

1.5m

Aux. duct

70Pa 23-26-28 23-26-28 24-27-30 24-28-31

100Pa 24-27-30 24-27-30 25-28-32 26-29-33

150Pa 25-30-34 25-30-34 28-32-36 29-33-37

35Pa 26-27-28 26-27-28 28-30-34 28-30-34

50Pa 26-28-29 26-28-29 28-30-34 28-30-34

2m

Measurement location 2

Measured in anechoic room.

*

1m

1.5m

70Pa 26-29-31 26-29-31 29-32-36 29-32-36

100Pa 27-30-33 27-30-33 29-33-37 29-33-37

150Pa 28-33-37 28-33-37 31-35-40 32-36-40

*1 <Cooling> Indoor temperature: 27°CDB/19°CWB (81°FDB/66°FWB) Outdoor temperature: 35°CDB (95°FDB)
<Heating> Indoor temperature: 20°CDB (68°FWB) Outdoor temperature: 7°CDB/6°CWB (45°FDB/43°FWB)
*2 Figures in the parentheses indicate drainpump-less Model (L).

HWE0812A GB

- 4 -

[ III Specfications ]

Model PEFY-

P50VMA(L)-E

PEFY-

P63VMA(L)-E

PEFY-

P71VMA(L)-E

PEFY-

P80VMA(L)-E

Power supply Voltage V 1-phase 220-230-240

Frequency Hz 50/60

Cooling capacity

Heating capacity

Power consumption

*1

*1

*2

Cooling kW 0.11(0.09) 0.12(0.10) 0.14(0.12) 0.14(0.12)

kW 5.6 7.1 8.0 9.0

kW 6.3 8.0 9.0 10.0

Heating kW 0.09(0.09) 0.10(0.10) 0.12(0.12) 0.12(0.12)

Current consumption

*2

Cooling kW 0.74(0.63) 1.01(0.90) 1.15(1.04) 1.15(1.04)

Heating kW 0.63(0.63) 0.90(0.90) 1.04(1.04) 1.04(1.04)

External finish Galvanized

Dimensions Height mm 250

Width mm 900 1100

Depth mm 732

Net weight

*2

kg 26(25) 32(31)

Heat exchanger Cross fin(Aluminium fin and copper tube)

Fan Type Sirocco fan x

Airflow rate
(Low-Mid-High)

External static
pressure

3

m

/min 12.0-14.5-

Pa 35/50/70/100/150

1

17.0

13.5-16.0-

19.0

Sirocco fan x 2

14.5-18.0-

21.0

14.5-18.0-

21.0

Motor Output kW 0.085 0.121

Air filter PP Honeycomb fabric (washable)

Refrigerant pipe
dimensions (R410A)

Gas (Brazed con­nection)

Liquid (Brazed

mm[in.] ø12.7[ø1/2] ø15.88[ø5/8]

mm[in.] ø6.35[ø1/4] ø9.52[ø3/8]

connection)

Refrigerant pipe
dimensions (R22)

Gas (Brazed con­nection)

Liquid (Brazed

mm[in.] ø15.88[ø5/8]

mm[in.] ø9.52[ø3/8]

connection)

Drain pipe dimensions mm[in.] O.D. 32[1-1/4] O.D. 32[1-1/4]

Operating noise(Low-Mid-High) 35Pa dB (A) 24-28-31 25-28-32 26-29-33 26-29-33

Aux. duct

50Pa 25-29-32 25-29-33 26-29-34 26-29-34

70Pa 26-30-33 26-30-34 26-30-35 26-30-35

2m 2m

Measurement location 1

Measured in anechoic room.

*

1.5m

Aux. duct

100Pa 27-31-34 27-31-35 29-33-37 29-33-37

150Pa 29-34-38 29-34-38 32-37-41 32-37-41

35Pa 28-31-35 29-32-35 30-33-37 30-33-37

50Pa 28-32-35 29-32-36 30-34-38 30-34-38

2m

Measurement location 2

Measured in anechoic room.

*

1m

1.5m

70Pa 29-33-37 30-33-38 31-36-39 31-36-39

100Pa 30-34-38 31-35-39 33-37-41 33-37-41

150Pa 32-37-41 33-38-41 36-41-44 36-41-44

*1 <Cooling> Indoor temperature: 27°CDB/19°CWB (81°FDB/66°FWB) Outdoor temperature: 35°CDB (95°FDB)
<Heating> Indoor temperature: 20°CDB (68°FWB) Outdoor temperature: 7°CDB/6°CWB (45°FDB/43°FWB)
*2 Figures in the parentheses indicate drainpump-less Model (L).

HWE0812A GB

- 5 -

[ III Specfications ]

Model PEFY-

P100VMA(L)-E

PEFY-

P125VMA(L)-E

PEFY-

P140VMA(L)-E

Power supply Voltage V 1-phase 220-230-240

Frequency Hz 50/60

Cooling capacity

Heating capacity

Power consumption

*1

*1

*2

Cooling kW 0.24(0.22) 0.34(0.32) 0.36(0.34)

kW 11.2 14.0 16.0

kW 12.5 16.0 18.0

Heating kW 0.22(0.22) 0.32(0.32) 0.34(0.34)

Current consumption

*2

Cooling kW 1.47(1.36) 2.05(1.94) 2.21(2.10)

Heating kW 1.36(1.36) 1.94(1.94) 2.10(2.10)

External finish Galvanized

Dimensions Height mm 250

Width mm 1400 1600

Depth mm 732

Net weight

*2

kg 42(41) 46(45)

Heat exchanger Cross fin(Aluminium fin and copper tube)

Fan Type Sirocco fan x 2

Airflow rate
(Low-Mid-High)

External static
pressure

3

m

/min 23.0-28.0-33.0 28.0-34.0-40.0 29.5-35.5-42.0

Pa 35/50/70/100/150

Motor Output kW 0.244

Air filter PP Honeycomb fabric (washable)

Refrigerant pipe
dimensions (R410A)

Refrigerant pipe
dimensions (R22)

Gas (Brazed con­nection)

Liquid (Brazed
connection)

Gas (Brazed con­nection)

Liquid (Brazed
connection)

mm[in.] ø15.88[ø5/8]

mm[in.] ø9.52[ø3/8]

mm[in.] ø19.05[ø3/4]

mm[in.] ø9.52[ø3/8)]

Drain pipe dimensions mm[in.] O.D. 32[1-1/4]

Operating noise(Low-Mid-High) 35Pa dB (A) 28-32-36 31-35-39 31-35-40

Aux. duct

50Pa 28-33-37 32-36-40 33-37-42

70Pa 30-35-39 32-37-41 34-38-43

2m 2m

Measurement location 1

Measured in anechoic room.

*

1.5m

Aux. duct

100Pa 31-36-40 33-39-42 35-39-44

150Pa 33-38-43 37-40-44 37-41-45

35Pa 31-36-40 35-40-44 36-41-45

50Pa 32-37-41 35-40-44 36-41-45

2m

Measurement location 2

Measured in anechoic room.

*

1m

1.5m

70Pa 33-38-42 37-41-45 38-42-46

100Pa 35-39-43 38-42-46 39-43-47

150Pa 37-42-45 39-44-47 40-45-48

*1 <Cooling> Indoor temperature: 27°CDB/19°CWB (81°FDB/66°FWB) Outdoor temperature: 35°CDB (95°FDB)
<Heating> Indoor temperature: 20°CDB (68°FWB) Outdoor temperature: 7°CDB/6°CWB (45°FDB/43°FWB)
*2 Figures in the parentheses indicate drainpump-less Model (L).

HWE0812A GB

- 6 -

[ III Specfications ]

2. Electrical component specifications

Component Sym-

bol

Room temperature

TH21

thermistor

Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

PEFY-

P20VMA(L)-E

PEFY-

P25VMA(L)-E

PEFY-

P32VMA(L)-E

Liquid pipe thermistor TH22 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

Gas pipe thermistor TH23 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

Fuse FUSE 250V 6.3A

Fan motor 8-pole, Output 85W SIC-70CW-D885-1

Linear expansion valve LEV 12VDC Stepping motor drive port diameter ø3.2 (0~2000 pulse)

Power supply terminal
block

Transmission terminal
block

TB2

TB5

TB15

(L, N, ) 250V 20A

(1, 2) 250V 15A, (M1, M2, S) 250V 20A

Drain float switch DS Open/short detection

Initial contact resistance 500 mΩ or less

Component Sym-

bol

Room temperature

TH21 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

PEFY-

P40VMA(L)-E

PEFY-

P50VMA(L)-E

PEFY-

P63VMA(L)-E

PEFY-

P71VMA(L)-E

PEFY-

P80VMA(L)-E

thermistor

Liquid pipe thermistor TH22 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

Gas pipe thermistor TH23 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

Fuse FUSE 250V 6.3A

Fan motor 8-pole, Output 85W

SIC-70CW-D885-2

8-pole, Output 121W

SIC-70CW-D8121-1

Linear expansion valve LEV 12VDC Stepping motor drive port diameter ø3.2 (0~2000 pulse)

Power supply terminal

TB2 (L, N, ) 250V 20A

block

Transmission terminal
block

TB5

TB15

(1, 2) 250V 15A, (M1, M2, S) 250V 20A

Drain float switch DS Open/short detection

Initial contact resistance 500 mΩ or less

Component Sym-

PEFY-P100VMA(L)-E PEFY-P125VMA(L)-E PEFY-P140VMA(L)-E

bol

Room temperature
thermistor

TH21

Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

Liquid pipe thermistor TH22 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

Gas pipe thermistor TH23 Resistance 0°C/15kΩ

, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

Fuse FUSE 250V 6.3A

Fan motor 8-pole, Output 244W SIC-101CW-D8244-1

Linear expansion valve LEV 12VDC Stepping motor drive port diameter ø3.2 (0~2000 pulse)

Power supply terminal
block

Transmission terminal
block

TB2

TB5

TB15

(L, N, ) 250V 20A

(1, 2) 250V 15A, (M1, M2, S) 250V 20A

Drain float switch DS Open/short detection

Initial contact resistance 500 mΩ or less

HWE0812A GB

- 7 -

[ IV Outlines and Dimensions ]

IV Outlines and Dimensions

[1] Outlines and Dimensions

1. PEFY-P20, 25, 32, 40, 50, 63, 71, 80, 100, 125, 140VMA-E

112

21018

112

11

J

Suspension bolt hole

4 - 14 x 30 Slot

2.9
ø

2 x E -

15

Access door

777

50

K

11112

J

Less than 700mm

450

More than 300

(A)

450

50

250~300

H

Note2

L

K x (M - 1) = N

G21

C

A

Air

inlet

Air

outlet

100 x (E - 1) = F

D (Duct)

Access door

(B)

Ceiling surface

More than 10mm

K

B (Suspension bolt pitch)

Less than 300mm

0

-10

65

(Actual length)

More than 20mm

J

6

10

100

73

30

20

P - ø2.9

23

643 (Suspension bolt pitch)

57

100

58

Air Filter

32)
ø

Drain hose (I.D.

Control box

Drain pump

Drain pipe

732

238

32 700

<accessory>

41

32)
ø

(O.D.

10

122

40

23

KL

K x (M - 1) = N

K

J

6

2.9
ø

P -

Terminal block (Transmission)

250

217

33

100

178 (Duct)

112

Terminal block (Power source)

32)
ø

Drain pipe (O.D.

(Spontaneous draining)

356

67

136

2.9
ø

2 x 2 -

6.35
ø

Liquid pipe

2

12.7

Gas pipe

ø

1

10P10

10

N

7804

990

4

M

LK

30015044

330

JH

54

49

800

1200

1000 260

858800G658

1058

F

600

1000

7

E

11

D

660800

1060

C

1200

1000

B

115 4

700 754

900 954 860 9

110 0

9.52
ø

15.88
ø

12

1280

5

320

54

1500

1358

1300

14

1360

1500

1454

1400

12

1480

5

370

54

1700

1558

1500

16

1560

1700

1654

1600

Model A

Refrigerant piping

Brazing connection (liquid)

2

40

Refrigerant piping

Brazing connection (gas)

1

PEFY-P40, 50VMA-E

PEFY-P20,25,32VMA-E

PEFY-P63,71,80VMA-E

PEFY-P100,125VMA-E

PEFY-P140VMA-E

(A) Space required for service and maintenance.

(B) Provide an access door for maintenance at the bottom.

Note 1 Use M10 suspension bolts. (not supplied)

2 Provide an access door for maintenance at the bottom.

3 The dimensions in the table are those of the PEFY-P63, 71, 80, 100, 125, 140VMA-E models, which have 2

fans. The PEFY-P20~50VMA-E model have 1 fans.

4 To connect an intake duct, uninstall the air filter on the unit, and install a locally procured air filter on the intake

duct on the intake side.

HWE0812A GB

- 8 -

[ IV Outlines and Dimensions ]

2. PEFY-P20, 25, 32, 40, 50, 63, 71, 80, 100, 125, 140VMAL-E

112 11

112

32)
ø

<accessory>

Drain hose (I.D.

0

-10

32

(Actual length)

Air Filter

Control box

J

LK

K x (M - 1) = N

K

9.52

J

6

2.9
ø

P -

Terminal block (Power source)

Terminal block (Transmission)

250

217

32)
ø

6.35
ø

Liquid pipe

2

12.7
ø

Gas pipe

1

10P10

10

N

7804

990

4

M

LK

30015044

330

JH

49

54

ø

15.88
ø

12

1280

5

320

54

12

1480

5

370

54

Access door

777

450

More than 300

(A)

450

0

50

250~30

H

Note2

50

112

21018

112

11

J

K x (M - 1) = N

G

C

A

Air

inlet

Access door

(B)

Ceiling surface

More than 10mm

KLK

B (Suspension bolt pitch)

More than 20mm

J

6

P - ø2.9

21

23

800

1000 260

1200

Suspension bolt hole

4 - 14 x 30 Slot

2.9
ø

2 x E -

15

Air

outlet

100 x (E - 1) = F

D (Duct)

100

10

73

30

100

20

732

643 (Suspension bolt pitch)

57

Refrigerant piping
2

24

10

32 700

122

40

23

Brazing connection (liquid)

100

33

178 (Duct)

Drain pipe (O.D.

356

67

136

2.9
ø

2 x 2 -

Refrigerant piping

Brazing connection (gas)

1

858800G658

1058

F

600

1000

7

E

11

D

660800

1060

C

1200

1000

B

1154

700 754

900 954 860 9

1100

Model A

PEFY-P40, 50VMAL-E

PEFY-P20,25,32VMAL-E

PEFY-P63,71,80VMAL-E

(A) Space required for service and maintenance.

(B) Provide an access door for maintenance at the bottom.

Note 1 Use M10 suspension bolts. (not supplied)

2 Provide an access door for maintenance at the bottom.

3 The dimensions in the table are those of the PEFY-P63, 71, 80, 100, 125, 140VMAL-E models, which have

2 fans. The PEFY-P20~50VMAL-E model have 1 fans.

4 To connect an intake duct, uninstall the air filter on the unit, and install a locally procured air filter on the intake

duct on the intake side.

1500

1700

1558

1358

1500

1300

14

16

1560

1360

1500

1700

1454

1654

1400

1600

PEFY-P100,125VMAL-E

PEFY-P140VMAL-E

HWE0812A GB

- 9 -

[ V Wiring Diagram ]

V Wiring Diagram

[1] Wiring Diagram

1. PEFY-P20, 25, 32, 40, 50, 63, 71, 80, 100, 125, 140VMA(L)-E

PULL BOX

FUSE (16A)

BREAKER (16A)

TO OUTDOOR UNIT

BC CONTROLLER

TO MA REMOTE

TB15

1

2

REMOTE CONTROLLER

CONTROLLER

TB5

M1

M2

S (SHIELD)

1

ACL

1

TO NEXT INDOOR UNIT

TB2

N

L

2

P. B .

2

AC220-240V

50,60Hz

POWER SUPPLY

DC280-340V

Rectifier circuit

MS

3~

Fan motor

INSIDE SECTION OF CONTROL BOX

I.B.

LED1

(Red)

CN27

SW4

(Red)

LED2

SW1

SWA

SW5

CND

(Red)

351

CN105

3

(Blue)

1

CN3A

SW2

DSA

SW14

CN2A

OFF

SWC

(Black)

SWE

ON

SW3

SW12

F01

U

2

(Blue)

CN90

SW11

ZNR01

ZNR02

1

CN2M

CN32

U

(Blue)

(Blue)

CNXA2

CNXB2

CN51

CN52

(Green)

CN44

CN60

CNP

1

CN41

(Red)

CN4F

21653

X10

X01

1

2

1

CNXC2

3

1

CN20

124

3

213

4

(Blue)

53214 4 4567121123

3

CNXB1 CNMFCNXA1CNXC1

431

2

542

124

3

2

4

CN4F

ONLY FOR PEFY-P·VMA-E

M

1~

Drainpump

TH21

t°

A

FOR PEFY-P·VMA-E

REFER TO "A" FOR PEFY-P·VMAL-E

FS

TH23

TH22

t° t°

M

LEV

HWE0812A GB

- 10 -

[ V Wiring Diagram ]

Table.1 SYMBOL EXPLANATION

SYM-

BOL

NAME SYM-

BOL

NAME SYM-

I.B. Indoor controller board CN32 Connector (Remote switch) SW2

P.B. Power supply board CN41 Connector (HA terminal-A) SW3

TB2 Power source terminal block CN51 Connector (Centrally control) SW4

TB5 Transmission terminal block CN52 Connector (Remote indica-

tion)

TB15 Transmission terminal block CN90 Connector (Wireless) SWE

F01 Fuse AC 250V 6.3A CN105 Connector (IT terminal) SW11

ZNR01,02Varistor CN2A Connector (0-10V Analog in-

put)

DSA Arrester FS Float switch SW14

X01 Aux. relay TH21 Thermistor (inlet air temp.de-

tection)

BOL

(I.B.)

(I.B.)

(I.B.)

SW5
(I.B.)

(I.B.)

(I.B.)

SW12

(I.B.)

(I.B.)

SWA

(I.B.)

NAME

Switch (for capacity code)

Switch (for mode selection)

Switch (for model selection)

Switch (for mode selection)

Connector (emergency opera­tion)

Switch (1s digit address set)

Switch (10ths digit address
set)

Switch (BRANCH No.)

Switch (for static pressure se­lection)

X10 Aux. relay TH22 Thermistor (piping temp.de-

tection / liguid)

ACL AC reactor (Power factor im-

provement)

CN27 Connector (Damper) SW1

TH23 Thermistor (piping temp. de-

tection / gas)

Switch (for mode selection)

SWC

(I.B.)

(I.B.)

Note 1 Wiring to TB2, TB5, and TB15 indicated by the double-dashed lines is on-site work.

2 terminal block, connector.

Switch (for static pressure se­lection)

HWE0812A GB

- 11 -

[ VI Refrigerant System Diagram ]

VI Refrigerant System Diagram

[1] Refrigerant system diagram

(A)

(B)

(G)

(D)

(H)

(F)

(I)

(A) Gas pipe thermistor TH23

(B) Gas pipe

(C) Liquid pipe

(D) Brazed connections

(E) Strainer (#100 mesh)

(F) Linear expansion valve

(G) Liquid pipe thermistor TH22

(H) Heat exchanger

(I) Room temperature thermistor TH21

Capacity PEFY-

P20, 25, 32, 40VMA(L)-E

Gas pipe ø12.7 [1/2] R410A: ø12.7 [1/2]

Liquid pipe ø6.35 [1/4] R410A: ø6.35 [1/4]

PEFY-

P50VMA(L)-E

R22: ø15.88 [5/8]

R22: ø9.52 [3/8]

(C)

(E)(E)

PEFY-

P63, 71, 80VMA(L)-E

ø15.88 [5/8] R410A: ø15.88 [5/8]

ø9.52 [3/8] ø9.52 [3/8]

P100, 125, 140VMA(L)-E

PEFY-

R22: ø19.02 [3/4]

HWE0812A GB

- 12 -

[ VII Troubleshooting ]

VII Troubleshooting

[1] Troubleshooting

1. Check methods

1. Component and check points

(1) Thermistor

Room temperature thermistor (TH21)
Liquid pipe thermistor (TH22)
Gas pipe thermistor (TH23)

Disconnect the connector and measure the resistance between terminals with a tester.
(Ambient temperature 10°C - 30°C)

Normal Abnormal

4.3kΩ - 9.6kΩ Open or short

(Refer to the thermistor characteristic graph below.)

1) Thermistor characteristic graph

Low-temperature thermistor

Room temperature thermistor (TH21)
Liquid pipe thermistor (TH22)
Gas pipe thermistor (TH23)
Drain sensor (DS)

50

Thermistor R
Multiplier of B = 3480 kΩ 2%

Rt = 15 exp { 3480( ) }

= 15 kΩ 3%

0

1

273+t

1

273

0°C 15kΩ
10°C 9.6kΩ
20°C 6.3kΩ
25°C 5.2kΩ

40

30

(B)

20

30°C 4.3kΩ
40°C 3.0kΩ

(A) Temperature (°C)

10

(B) Resistance (kΩ)

0

-20 -10 0 10 20 30 40 50

(A)

(2) Fan motor (CNMF)

Refer to the page on "DC fan motor (fan motor/indoor control board)."

(3) Linear expansion valve

Disconnect the connector, and measure the resistance between terminals with a tester.
Refer to the next page for details.

Normal Abnormal

200 kΩ 10%

M

LEV

(F)

(E)

(D)

(C)

(B)

(A)

CN60

1
2
3
4
5
6

1-5 2-6 3-5 4-6 Open or short

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

(A) Brown (D) Orange

(B) Red (E) Yellow

(C) Blue (F) White

HWE0812A GB

- 13 -

[ VII Troubleshooting ]

1) Summary of linear expansion valve (LEV) operation

The LEV is operated by a stepping motor, which operates by receiving a pulse signal from the indoor control board.
The LEV position changes in response to the pulse signal.

Indoor control board and LEV connection

(G)

12VDC

(J)

(C)

4

(A)

6

(E)

2

3

(F)

M

5

1

(D)

(B)

(A) Brown (F) White

(B) Red (G) Control board

(C) Blue (H) Connection (CN60)

(D) Orange (I) Drive circuit

(E) Yellow (J) Linear expansion valve

Pulse signal output and valve operation

Phase

number

1234

Output pulse

ø1 ON OFF OFF ON

ø2 ON ON OFF OFF

ø3 OFF ON ON OFF

ø4 OFF OFF ON ON

(A)

(B)

(C)

(D)

(E)

(F)

(H)

6

5

4

3

2

1

(I)

The output pulse changes in the following order:
When the valve closes 1 -> 2 -> 3 -> 4 -> 1

When the valve opens 4 -> 3 -> 2 -> 1 -> 4

When the valve position remains the same, all output signals will be OFF.
If any output signal is missing or if the signal remains ON, the motor vibrates and makes clicking noise.

HWE0812A GB

- 14 -

[ VII Troubleshooting ]

2) LEV operation

(a) Close

(b) Open

(c) Fully open valve (2000 pulses)

(d) No. of pulses

(a)

(f)

(b)

(c)

(d)

(e)

(e) Extra tightning (80 - 100 pulse)

(f) Valve opening degree

When the power is turned on, a pulse signal of 2200 pulses is output (valve closure signal), to bring the valve to position A.
When the valve is operating normally, it is free of vibration noise. If the valve locks or when it goes from point E to A in the

figure, it makes louder noise than would be heard when there is an open phase.

Check for abnormal sound/vibration by placing the metal tip of a screwdriver against the valve and the handle side against

your ear.

3) Troubleshooting

Symptom Checking Criteria Remedy

Circuit failure on
the microcomputer

Disconnect the connectors on the control board, and connect LEDs to test the cir­cuit as shown below.

6

5

4

3

2

1 k

LED

1

Pulse signals are output for 10 seconds when the main power is turned on. If there
are LEDs that do not light up at all or remain lit after the pulses are turned off, there
is a problem with the driving circuit.

Locked LEV The motor will idle and make small clicking noise if it is run while the LEV is locked.

If this clicking noise is heard both when the valve is fully closed and while it is being
opened, it indicates a problem.

Disconnected or
shorted LEV motor

easure the resistance between the coils with a tester (red-white, red-orange,
brown-yellow, brown-blue). The normal range of resistance is 150 Ω 10%

coils

Replace the in­door control
board if driving
circuit failure is
detected.

Replace the LEV.

Replace the LEV.

HWE0812A GB

- 15 -

[ VII Troubleshooting ]

Symptom Checking Criteria Remedy

Valve closure fail­ure (leaky valve)

To check the LEV on the indoor unit, check the indoor unit liquid pipe temperature
that appears on the operation monitor on the outdoor unit's multi control board while
operating the indoor unit in question in the FAN mode and the other indoor units in
the cooling mode.

(A) Termistor (TH21)

(A)

LEV

Normally, the LEV is fully closed while the unit is in the FAN mode. If the valve is
leaky, liquid pipe thermistor reading will be lower than normal. If it is significantly
lower than the inlet temperature on the remote controller, valve closure failure is
suspected. If the amount of leakage is insignificant, replacement of LEV is unnec­essary unless it is causing a problem.

Misconnections of
connectors or con­tact failure

(4) Drain-up mechanism

Measure the resistance between the terminals with a tester.
(coil temperature 20°C)

Perform a visual check for disconnected connectors.
Perform a visual check of lead wire color.

Replace the LEV
if the amount of
leakage is great.

Disconnect the
connectors on
the control board
and perform a
continuity test.

Normal Abnormal

1

3

340 Ω Open or short

(5) Drain float switch (CN4F)

Disconnect the connector, and measure the resistance between terminals with a tester.

(A) Moving part

(A)

1

(C)

(B)

(B) Switch

(C) Magnet

2
3
4

(A)

Position of the moving part Normal Abnormal

Up Short (any position but short)

Down Open (any position but open)

HWE0812A GB

- 16 -

[ VII Troubleshooting ]

2. DC fan motor (fan motor/indoor control board)

1. CAUTION

A high voltage is applied to the connector for connection to the fan motor (CNMF).
Do not unplug the connector CNMF with the unit energized to avoid damage to the indoor control board and fan motor.

2. Troubleshooting

Symptom: Indoor unit fan does not run.

Check fan motor connector contact
(CNMF).

Is the fan motor connector

No

Fix the connection.

(CNMF) fully inserted?

Yes

Check the power supply.

Measure the voltage at the indoor control board.

310 - 340VDC (same with the voltage between fan connector 1 (+) and 4(-))

Power supply voltage

V

DC

15VDC (same with the voltage between fan connector 5 (+) and 4(-))

1 - 6.5VDC (same with the voltage between fan connector 6 (+) and 4(-))

[Values for Vsp are the values that are measured with the fan motor in operation.
Vsp is 0V when the fan motor is stopped.]

Is the voltage within the

No

Replace the indoor control board.

normal range?

Yes

Check the fan motor position thermistor signal.
Get the motor to make a full rotation or more, and measure the voltage at the test point

FG

.

V
(same with the voltage between fan connector 7 (+) and 4(-))

Are 0VDC and 15VDC

No

Replace the motor.

displayed alternately?

Yes

Replace the indoor control board.

HWE0812A GB

- 17 -

[ VII Troubleshooting ]

3. Address switch setting

Make sure that power to the unit is turned off.

(A)

(B)

ON

OFF

(A) Indoor unit control board

(B) Factory setting (all models)

1. When using an ME remote controller, set the address with the rotary switches (SW11, SW12).

Address setting is not required when the unit remote controller is used.

On-site address setting is required for the indoor units to run.

2. Address settings vary in different systems.
Refer to the section on address setting in the outdoor unit installation manual.

3. Address is set with a combination of SW12 (10's digit) and SW11 (1's digit).
To set the address to "3," set SW12 to "0" and SW11 to "3."

To set the address to "25," set SW 12 to "2" and SW 11 to "5."

ON

OFF

HWE0812A GB

- 18 -

[ VII Troubleshooting ]

4. Voltage test points on the control board

1. PEFY-P20, 25, 32, 40, 50, 63, 71, 80, 100, 125, 140VMA(L)-E

CN2M

CN3A

SW2

SW4

CN41

CN51
CN52

CN20

CN4F

CN44

SWE

F01 Fuse(AC 250V 6.3A)

CND Power supply voltage (220 -

240VAC)

CN2M For M-NET transmission cable

connection (24 - 30VDC)

SWE Emergency operation

SW2 Capacity setting

SW4 Function setting

SW3 Function setting

CN32 Remote start/stop adapter

CN3A For MA remote controller cable

connection
(10 - 13 VDC (Between 1 and 3.))

CN52 Remote display

CN51 Centralized control

CN41 JAMA standard HA terminal A

CN44 Thermistor (liquid/gas tempera-

ture)

CND

CNP

SW3

Indoor controller board

CN32

F01

C25(*1)

CNMF

CN4F Float thermistor

CN20 Thermistor (Inlet temperature)

CNMF Fan motor output

1 - 4: 310 - 340 VDC
5 - 4: 15 VDC
6 - 4: 0 - 6.5 VDC
7 - 4: Stop 0 or 15 VDC

Run 7.5 VDC
(0 - 15 pulse)

CNP Drain-up mechanism output

(200VAC)

(*1)

Voltage on the (-) side of PC51

V

FG

and C25
(Same with the voltage between 7
(+) and 4 (-) of CNMF)

VCCVoltage between the C25 pins

15 VDC
(Same with the voltage between 5
(+) and 4 (-) of CNMF)

Vsp Voltage between the C53 pins

0VDC (with the fan stopped)
1 - 6.5VDC (with the fan in opera­tion)
(Same with the voltage between 6
(+) and 4 (-) of CNMF)

PC51(*1)

Power supply board

HWE0812A GB

C53(*1)

- 19 -

[ VII Troubleshooting ]

5. Dipswitch setting (Factory setting)

1. Function setting

(1) SW1

Switch position Function Switch setting

ON OFF

1 Active Thermistor (Intake air

thermistor)

2 Filter clogging detection Available Unavailable

3 Filter life 2500 hr 100 hr

4 Outdoor air intake Enabled Disabled

5 Remote display Thermo-ON signal Fan output

6 Humidifier operation During heating mode During heating operation

7 Fan speed Low Very low

8 Fan speed at heating Thermo-OFF Preset fan speed Follows the setting of SW1-7

9 Auto restart after power failure Enabled Disabled

10 Power start/stop Enabled Disabled

1) Adress board

Built-in thermistor on the remote
controller

Indoor unit

Factory setting

(2) SW3

Switch position Function Switch setting

ON OFF

1 Unit type Cooling only Heat pump

2- - -

3- - -

4- - -

5- - -

6- - -

7- - -

8 Heating 4-deg up Disabled Enabled

9- - -

10 - - -

1) Indoor control board
Dipswitch settings must be made while the unit is stopped.

Factory setting

PEFY-P25, 40, 63, 71, 80, 100, 125, 140VMA(L)-EPEFY-P20VMA(L)-E PEFY-P32, 50VMA(L)-E

HWE0812A GB

- 20 -

[ VII Troubleshooting ]

2. Capacity code setting

(1) SW2

1) Indoor control board
Dipswitch settings must be made while the unit is stopped.

Factory setting
The switches are set to correspond to the unit capacity.

PEFY-P25VMA(L)-EPEFY-P20VMA(L)-E PEFY-P32VMA(L)-E PEFY-P40VMA(L)-E

PEFY-P50VMA(L)-E PEFY-P63VMA(L)-E PEFY-P71VMA(L)-E PEFY-P80VMA(L)-E

PEFY-P100VMA(L)-E PEFY-P125VMA(L)-E PEFY-P140VMA(L)-E

3. Model setting

(1) SW4

1) Indoor control board
Dipswitch settings must be made while the unit is stopped.

Factory setting

Note:
Changes made to the dipswitches SW1, SW2, and SW3 will become effective when the unit comes to a stop (remote controller
off). There is no need to power cycle the unit.

4. Power voltage setting

(1) SW5

1) Indoor control board
Dipswitch settings must be operated with the main power turned OFF.

Factory setting Set SW5 to 240V side when the power supply is 240 volts.

220V

(208V)

240V

(230V)

When the power supply is 220 and 230 volts, set SW5 to 220V side.

HWE0812A GB

- 21 -

[ VII Troubleshooting ]

5. External static pressure

(1) SWA, SWC

1) Indoor control board

All models Factory

35Pa

2

3
2

1

1

SWA SWC

50Pa

3

2

2
1

1

SWA SWC

70Pa

2

3
2

1

1

SWA SWC

100Pa

2

3
2

1

1

SWA SWC

150Pa

3

2

2
1

1

SWA SWC

setting

3
2
1

2

1

SWA SWC

Note:
Changes that are made to the dipswitches SWA and SWC immediately become effective regardless of the unit's operation
status (RUN/STOP) or the remote controller status (ON/OFF).

6. 1s and 10ths digits

(1) SW11, SW12 (Rotary switch)

The use of a network remote controller (PAR-F27MEA) requires address setting.

1) Indoor control board
Address settings must be made while the unit is stopped.

Factory setting

7. Connection No. setting

(1) SW14 (Rotary switch)

This switch is used when the unit connected to an R2 series of outdoor unit.

1) Indoor control board

Factory setting

Note:
Changes to the dipswitches SW11, SW12, SW14, and SW15 must be made while the unit is stopped and the remote controller
is OFF.

HWE0812A GB

- 22 -

[ VIII Disassembly Procedure ]

VIII Disassembly Procedure

[1] Disassembly Procedure

1. Control box

Exercise caution when removing heavy parts.

1. Removing the control box cover
(1) Remove the three fixing screws on the cover (A) to re-

move it.

(A)

Fig.1

Fig.2

HWE0812A GB

- 23 -

[ VIII Disassembly Procedure ]

2. Thermistor (Intake air)

Exercise caution when removing heavy parts.

1. Remove the control box cover according to the procedure
in section [1].

2. Remove the thermistor.

(1) Pull out the thermistor holder (B) and thermistor (C) on

the control box.

(B), (C)

Fig.3

HWE0812A GB

- 24 -

[ VIII Disassembly Procedure ]

3. Drainpan

Exercise caution when removing heavy parts.

1. Removing the filter and the bottom plate

(1) Push down the tab on the filter, and pull out the filter in

the direction of the arrow 1.

(2) Remove the fixing screws on the bottom plate (D), (E) to

remove it.

2. Removing the drainpan

(1) Pull out the drain pan in the direction of the arrow 2.

Note

Drain the water out of the drain pan before removing

it.

Fig.4

Fig.5

(D)

(E)

HWE0812A GB

- 25 -

[ VIII Disassembly Procedure ]

4. Thermistor (Gas pipe) (Liquid pipe)

Exercise caution when removing heavy parts.

1. Remove the drain pan according to the procedure in sec­tion [1].

2. Removing the Heat exchanger cover

(1) Remove the four fixing screws on the heat exchanger cov-

er (F) to remove it.

3. Removing the thermistor

(1) Remove the thermistor (G) from the thermistor holder (H)

on the copper tube.

HEX

(F)

Fig.6

Thermistor size
Liquid pipe: ø8mm
Gas pipe: ø6mm

(G), (H)

Fig.7

HWE0812A GB

- 26 -

[ VIII Disassembly Procedure ]

5. Fan and fan motor

Exercise caution when removing heavy parts.

1. Removing the filter and the bottom plate

(1) Push down the tab on the filter, and pull out the filter in the

direction of the arrow 1.

(2) Remove the fixing screws on the bottom plate (J) to re-

move it.

(J)

Fig.8

(a) Tab

2. Removing the fan casing (bottom half)

(1) Squeeze the tabs on the fan casing to remove it in the di-

rection of arrow 2.

3. Removing the motor cable

(1) Remove the motor cable threw the rubber bush.

4. Removing the fan motor and the Sirocco fan

(1) Remove the two motor fixing screws to remove the motor

and the Sirocco fan in the direction of arrow 3.

(a)

Fig.9

Fig.10

(2) Remove the four fan case fixing screws to take the top

half of the fan casing off.

Fig.11

HWE0812A GB

- 27 -

[ VIII Disassembly Procedure ]

6. Heat exchanger

Exercise caution when removing heavy parts.

1. Remove the drain pan according to the procedure in section
[1].

2. Remove the heat exchanger cover according to the proce­dure in section [4] 2.

3. Removing the cover

(1) Remove the five fixing screws on the cover (K) to remove it.

4. Removing the Heat exchanger

(1) Remove the fixing screws on the heat exchanger (M) to re-

move it.

(K)

Fig.12

(K) Pipe support plate

Fig.13

(M)

HWE0812A GB

- 28 -

Jun. 2009 HWE0812A New publication, effective Jun. 2009

Specifications subject to change without notice