Mitsubishi HWE05070 Service Manual

SERVICE MANUAL

<indoor unit> Service ref.

Models

PEHD-P35EAH
PEHD-P50EAH
PEHD-P60EAH
PEHD-P71EAH
PEHD-P100EAH
PEHD-P125EAH
PEHD-P140EAH

TM

1. REFERENCE MANUAL ····························· 1

2. SAFETY PRECAUTION ···························· 2

3. PART NAMES AND FUNCTIONS ············· 4

4. SPECIFICATION ······································· 6

5. FAN PERFORMANCE AND
CORRECTED AIR FLOW ························ 8

6. OUTLINES & DIMENSIONS ···················· 12

7. WIRING DIAGRAM ·································· 14

8. REFRIGERANT SYSTEM DIAGRAM ······ 15

9. TROUBLESHOOTING ···························· 16

10

. DISASSEMBLY INSTRUCTIONS ············ 28

11

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

12

. OPTIONAL PARTS ·································· 36

CONTENTS

INDOOR UNIT

REMOTE CONTROLLER

ON/OFF

TEMP.

Series PEHD

/

PEAD

R407C

2005

SPLIT-TYPE, HEAT PUMP
AIR CONDITIONERS

NOTE:

• This manual describes only
service data of the indoor
units.

1

REFERENCE MANUAL

1

Service Ref.

PUHZ-RP35/50/60/71/100/125/140VHA
PUHZ-RP100/125/140YHA

PUHZ-RP71/100/125/140VHA-A

PUHZ-RP200/250YHA

PUHZ-RP200/250YHA-A

PU(H)-P·VGAA.UK
PU(H)-P·YGAA.UK

SUZ-KA·VA.TH

Service Manual No.

OC334

OC337

OC338

OC339

OC336

OC322

1-1. OUTDOOR UNIT’S SERVICE MANUAL

Series (Outdoor unit)

PUHZ-RP·VHA(-A)
PUHZ-RP·YHA(-A)

PU(H)-P·VGAA.UK
PU(H)-P·YGAA.UK

Manual No.

OCS01

OCS02

1-2. TECHNICAL DATA BOOK

2

SAFETY PRECAUTION

2

[2] Refrigerant recharging

(1) Refrigerant recharging process

1Direct charging from the cylinder.

·R407C cylinder are available on the market has a syphon pipe.

·Leave the syphon pipe cylinder standing and recharge it.

(By liquid refrigerant)

(2) Recharge in refrigerant leakage case

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release the refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of

liquid refrigerant.

[1] Cautions for service

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of

liquid refrigerant.

Cautions for units utilising refrigerant R407C

CAUTIONS RELATED TO NEW REFRIGERANT

Do not use the existing refrigerant piping.

The old refrigerant and lubricant in the existing piping
contains a large amount of chlorine which may cause the
lubricant deterioration of the new unit.

Use “low residual oil piping”

If there is a large amount of residual oil (hydraulic oil, etc.)
inside the piping and joints, deterioration of the lubricant
will result.

Use ESTER , ETHER or HAB as the lubricant to
coat flares and flange connection parts.

If large amount of mineral oil enter, that can cause
deterioration of refrigerant oil etc.

Use liquid refrigerant to charge the system.

If gas refrigerant is used to seal the system, the composition
of the refrigerant in the cylinder will change and performance
may drop.

Do not use a refrigerant other than R407C.

If another refrigerant (R22, etc.) is used, the chlorine in the
refrigerant may cause the lubricant deterioration.

Use a vacuum pump with a reverse flow check valve.

The vacuum pump oil may flow back into the refrigerant
cycle and cause the lubricant deterioration.

Store the piping to be used during installation
indoors with keep both ends sealed until just
before brazing.
(Store elbows and other joints in a plastic bag.)

If dust, dirt, or water enters the refrigerant cycle,
deterioration of the oil and compressor trouble may result.

Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.

Gravimeter

Unit

3

[3] Service tools

Use the below service tools as exclusive tools for R407C refrigerant.

No. Tool name Specifications

1 Gauge manifold ·Only for R407C.

·Use the existing fitting SPECIFICATIONS. (UNF7/16)

·Use high-tension side pressure of 3.43MPa·G or over.

2 Charge hose ·Only for R407C.

·Use pressure performance of 5.10MPa·G or over.

3 Electronic scale

4 Gas leak detector ·Use the detector for R134a or R407C.

5 Adapter for reverse flow check. ·Attach on vacuum pump.

6 Refrigerant charge base.

7 Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)

·Cylinder with syphon

8 Refrigerant recovery equipment.

4

PART NAMES AND FUNCTIONS

3

● Indoor Unit

In case of rear inlet

Air intake (sucks
the air inside the
room into the
unit)

Air outlet

In case of bottom inlet
(Only P35~60EAH)

A

A

5

For purposes of this explanation,
all parts of the display are shown
as lit. During actual operation, only
the relevant items will be lit.

˚F˚C

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON
OFF

Hr
AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

Identifies the current operation

Shows the operating mode, etc.
* Multilanguage display is sup-

ported.

“Centrally Controlled” indicator

Indicates that operation of the re­mote controller has been prohib­ited 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, shows the time
remaining.

“Sensor” indication

Displayed when the remote controller
sensor is used.

“Locked” indicator

Indicates that remote controller but­tons have been locked.

“Clean The Filter” indicator

Comes on when it is time to clean the
filter.

Timer indicators

The indicator comes on if the corre­sponding timer is set.

Up/Down Air Direction indica­tor

The indicator shows the direc­tion of the outcoming airflow.

“One Hour Only” indicator

Displayed if the airflow is set to
weak and downward during COOL
or DRY mode. (Operation varies
according to model.)
The indicator goes off after one
hour, at which time the airflow di­rection also changes.

Room Temperature display

Shows the room temperature. The room
temperature display range is 8–39°C.
The display flashes if the temperature
is less than 8 °C or 39 °C or more.

Louver display

Indicates the action of the swing louver.
Does not appear if the louver is station­ary.

(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.

• Remote controller

• Display

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

• Operation buttons

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Set Temperature buttons

Down

Up

Timer Menu button
(Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back

Ahead

Timer On/Off button
(Set Day button)

Opening the
door.

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 preceding operation
number.

Ventilation button
(

Operation button)

To next operation
number.

Built-in temperature sensor

Caution

● Only the Power on indicator lights when the unit is stopped and power supplied to the unit.

● If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available”

message.
If you are using the remote controller to drive multiple indoor units, this message will appear only if the feature is not
present at the parent unit.

● When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature indica-
tion (For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.

6

4

SPECIFICATION

INDOOR UNIT

Service Ref. PEHD-P35EAH PEHD-P50EAH
Power supply Single phase,50Hz,220-240V

Input ✻1 kW 0.13 0.13 <1.13> 0.15 0.15 <1.15>
Running current ✻1 A 0.55 0.55 <4.71> 0.63 0.63 <4.79>

External finish Galvanized sheets
Heat exchanger Plate fin coil

Fan

Booster heater ✻1 kW <1.0> <1.0>
Operation control & Thermostat Built in remote controller
Noise level (Lo-Hi) dB 34-38 36-40
Unit drain pipe O.D mm (in.) 32 (1-1/4)

Dimensions

Weight kg (lbs) 35 (77) 35 (77)

Starting current ✻1A ––––

Fan (drive) × No. Centrifugal (direct) × 2
Fan motor output kW 0.043 (at 70 Pa) 0.076 (at 70 Pa)
Airflow (Lo-Hi)
External static pressure Pa (mmAq) 30/70

W mm (in.) 935 (36-13/16)

D mm (in.) 700 (27-5/8)
H mm (in.) 295 (11-5/8)

3

m

/min (CFM)

Cooling Heating Cooling Heating

11-14 <388-494> 13.5-17 <477-600>

Service Ref.
Power supply

Input ✻1kW
Running current ✻1A

External finish
Heat exchanger

Fan

INDOOR UNIT

Booster heater ✻1kW
Operation control & Thermostat
Noise level (Lo-Hi) dB
Unit drain pipe O.D mm (in.)

Dimensions

Weight

Service Ref.
Power supply

External finish
Heat exchanger

Fan

INDOOR UNIT

Booster heater ✻1kW
Operation control & Thermostat
Noise level (Lo-Hi) dB
Unit drain pipe O.D mm (in.)

Dimensions

Weight kg (lbs)

Notes 1. Above data based on indicated voltage

Starting current ✻1A

Fan (drive) × No.
Fan motor output kW
Airflow (Lo-Hi)
External static pressure Pa (mmAq)

W mm (in.)

D mm (in.)
H mm (in.)

Input ✻1kW
Running current ✻1A
Starting current ✻1A

Fan (drive) × No.
Fan motor output kW
Airflow (Lo-Hi)
External static pressure Pa (mmAq)

W mm (in.)

D mm (in.)
H mm (in.)

Indoor Unit: Single phase 240V 50Hz
Outdoor Unit: Single phase 240V 50Hz / 3 phase 415V 50Hz

3

m

/min (CFM)

kg (lbs)

3

m

/min (CFM)

PEHD-P60EAH

Cooling Heating

PEHD-P71EAH PEHD-P100EAH

Cooling Heating Cooling Heating

0.40 0.40 <2.50> 0.62 0.62 <3.02>

1.70 1.70 <10.41> 2.64 2.64 <12.58>

–– ––

20-25 <706-883> 27-34 <953-1,200>

1,175 (46-1/8) 1,415 (55-11/16)

46 (101) 65 (143)

Single phase,50Hz,220-240V

0.17 0.17<1.67>

0.72 0.72<6.96>

––

0.15 0.27

<2.1> <2.4>

37-41 41-46

Galvanized sheets

Plate fin coil

Centrifugal (direct) × 2

0.116 (at 70 Pa)

17-21<600-741>

30/70
<1.5>

Built in remote controller

37-41

32 (1-1/4)

1,175 (46-1/8)

700 (27-5/8)
295 (11-5/8)

44 (97)

Single phase,50Hz,220-240V

Galvanized sheets

Plate fin coil

Centrifugal (direct)

70 (130)

Built in remote controller

32 (1-1/4)

740 (29-1/8)

325 (12-13/16)

× 2

7

Service Ref. PEHD-P125EAH PEHD-P140EAH
Power supply Single phase,50Hz,220-240V

Input ✻1 kW 0.64 0.64 <3.64> 0.66 0.66< 3.66>
Running current ✻1 A 2.72 2.72 <15.17> 2.79 2.79 <15.24>

External finish Galvanized sheets
Heat exchanger Plate fin coil

Fan

INDOOR UNIT

Booster heater ✻1 kW <3.0> <3.0>
Operation control & Thermostat Built in remote controller
Noise level (Lo-Hi) dB 44-50 46-51
Unit drain pipe O.D mm (in.) 32 (1-1/4)

Dimensions

Weight kg (lbs) 68 (150) 73 (161)

Notes 1. Above data based on indicated voltage

Starting current ✻1A ––––

Fan (drive) × No. Centrifugal (direct) × 2
Fan motor output kW 0.40
Airflow (Lo-Hi)
External static pressure Pa (mmAq) 70 (130)

W mm (in.) 1,415 (55-11/16) 1,715 (67-1/2)

D mm (in.) 740 (29-1/8)
H mm (in.) 325 (12-13/16)

Indoor Unit: Single phase 240V 50Hz
Outdoor Unit: Single phase 240V 50Hz / 3 phase 415V 50Hz

3

m

/min (CFM)

Cooling Heating Cooling Heating

33.5-42 <1,183-1,483> 36.5-46 <1,288-1,624>

8

PEHD-P35EAH

PEHD-P50EAH

5

FAN PERFORMANCE AND CORRECTED AIR FLOW

100

80

60

40

(1Pa 0.1mmAq)

20

External static pressure (Pa)

140

120

100

80

60

40

(1Pa 0.1mmAq)

External static pressure (Pa)

20

Fan Performance <30Pa>

Hi

Lo

8

610121416

Air Flow (CMM)

Fan Performance <70Pa>

Hi

Lo

Corrected Air Flow

Cooling

1.1

1.0

0.9

0.8

Correction factor

6810121416

Air flow (CMM)

Heating

1.3

1.2

1.1

1.0

Correction factor

0.9

0.8
6 8 10 12 14 16

Air flow (CMM)

Capacity

input

Air Flow (CMM)

140

120

100

(1Pa 0.1mmAq)

External static pressure (Pa)

160

140

120

100

Fan Performance <30Pa>

80

60

40

20

6 8 10 12 14 16 18 20

Fan Performance <70Pa>

80

10 126 8 14 16 18

Hi

Lo

Air Flow (CMM)

Hi

Corrected Air Flow

Cooling

1.1

1.0

0.9

0.8

Correction factor

8 10121416 18 20 22

Air flow (CMM)

Heating

1.3

1.2

1.1

1.0

Capacity

input

60

(1Pa 0.1mmAq)

40

External static pressure (Pa)

20

8 10121416182022

Lo

Air Flow (CMM)

Correction factor

0.9

0.8
8 10121416 18 20 22

Air flow (CMM)

9

Corrected Air Flow

Capacity
Input

1.1

1.0

0.9

0.8

12 16 20 24 28 32

Air flow (CMM)

Correction factor

Cooling

1.1

1.0

1.3

1.2

0.9

0.8
12 16 20 24 28 32

Air flow (CMM)

Correction factor

Heating

140

120

100

200

180

160

80

60

40

20

12 16 20 24 28 32

Air flow

(CMM)

Fan performance <130Pa>

External static pressure (Pa)

(1Pa 0.1mmAq)

140

120

100

180

160

80

60

40

20

12 16 20 24 28 32

Air flow

(CMM)

Fan performance <70Pa>

External static pressure (Pa)

(1Pa 0.1mmAq)

=

Lo

Hi

=

Hi

Lo

PEHD-P71EAH

PEHD-P60EAH

Fan Performance <30Pa>

120

100

80

60

40

(1Pa 0.1mmAq)

20

External static pressure (Pa)

8 1012141618202224

Fan Performance <70Pa>

140

120

100

80

Lo

Air Flow (CMM)

Corrected Air Flow

Capacity

input

Cooling

1.1

1.0

Hi

0.9

0.8

Correction factor

12 14 16 18 20 22 24 26

Air flow (CMM)

Heating

1.3

1.2

1.1

Hi

1.0

60

40

(1Pa 0.1mmAq)

External static pressure (Pa)

20

10 12 14 16 18 20 22 24 26

Lo

Air Flow (CMM)

Correction factor

0.9

0.8
12 14 16 18 20 22 24 26

Air flow (CMM)

10

PEHD-P100EAH

PEHD- P125EAH

Fan performance <130Pa>

200

180

160
140

120

100

80

=

60

Lo

40

(1Pa 0.1mmAq)

20

External static pressure (Pa)

26 28 30 32 34 36 38 40

Air flow

Corrected Air Flow

Cooling

1.1

(CMM)

Hi

Capacity
Input

Fan performance <70Pa>

220

200

180

160
140

120

100

80

=

60

40

(1Pa 0.1mmAq)

20

External static pressure (Pa)

24 26 28 30 32 34 36 38

Air flow

Heating

1.2

1.1

Hi

Lo

(CMM)

1.0

0.9

Correction factor

0.8
24 26 28 30 32 34 36 38 40

Air flow (CMM)

Fan performance <130Pa>

220

200

180

160
140

120

100

80

=

60

(1Pa 0.1mmAq)

40

20

External static pressure (Pa)

Lo

32 34 36 38 40 42 44 46 48

Air flow

(CMM)

Hi

1.0

0.9

Correction factor

0.8
24 26 28 30 32 34 36 38 40

Air flow (CMM)

Fan performance <70Pa>

220

200

180

160
140

120

100

80

=

60

(1Pa 0.1mmAq)

40

20

External static pressure (Pa)

32 34 36 38 40 42 44 46

Air flow

Hi

Lo

(CMM)

Corrected Air Flow

Cooling

1.1

1.0

0.9

Correction factor

0.8
32 34 36 38 40 42 44 46 48

Air flow (CMM)

Capacity
Input

Heating

1.2

1.1

1.0

0.9

Correction factor

0.8
32 34 36 38 40 42 44 46 48

Air flow (CMM)

11

PEHD-P140EAH

Fan performance <130Pa>

220

200
180

160
140
120

100

=

80

60

(1Pa 0.1mmAq)

40

20

External static pressure (Pa)

Lo

36

38 40 42 44 46 48 50

Air flow

Hi

52

(CMM)

Corrected Air Flow Capacity

Cooling

1.1

1.0

0.9

Correction factor

0.8
36 38 40 42 44 46

Input

48 50

Air flow (CMM)

52

Fan performance <70Pa>

200

180

160

140

120

=

100

80

(1Pa 0.1mmAq)

60

40

External static pressure (Pa)

20

Lo

36

38 40 42 44 46 48

Air flow

(CMM)

Heating

1.2

1.1

1.0

0.9

Correction factor

0.8
36 38 40 42 44 46

Air flow (CMM)

Hi

50

48

50 52

12

44

8

Air inlet

Air outlet

8

75

7

6

5

Keep duct-work length 850mm or more.
Be sure to apply the air filter (field supply) near the air inlet grille.

Service space:500 or more

Access door

Air outlet

Air inlet

4

3

1

2

365~465

50~150

243

159

197

558181

18

10

56 355

B

10-ø3(P35,50)
12-

ø3(P60)

10-ø3(P35,50)
12-

ø3(P60)

In case of bottom inlet

In case of rear inlet

(14×22)

Lifting bolt hole

3.5

3.5 288 3.5

21

10-ø3(P35,50)
12-

ø3(P60)

45

277

30D

450

450

282

85

81

A

81

256

40
15

10

179

10

30

35

24

640

227

256

10

30

40

A

81

A

29

80

10

10

E

13

13

61

176

176

109

BC

C B

C

8

7

6

5

4

3

2

1

Refrigerant piping flare connection (liquid ø9.52 copper tube):HP
Refrigerant piping flare connection (gas ø15.88 copper tube):LP
Drain R1(External thread)
Electrical parts box
Electric Heater
Drain Pump (Option)
Drain Pipe (Option) ··· Flexible joint VP-25(I.D.ø32)
Filter

Set

804830-

EDCBA

10441070290280

305772

1012

Model

P60

P35,50

6

OUTLINES & DIMENSIONS

1. INDOOR UNIT

PEHD-P35, 50, 60EAH

197

81

308

365~465

81

323

44

55

50~150

13

75

243

8

7

6

5

Service space:500 or more

Access door

Air outlet

4

3

1

2

Air inlet

45

122

307

113

12-ø3

(14×

22)

Lifting bolt hole

30

29

3.5 319 3.5

181

140

C

C B

B

450

450

282

10

35

210

81

A

81

A

53

40

261

30 680

169

30

20

10 10

37580

13

30

E

D

12-ø3

19.05158416104704601552P140

15.8810441070290

F

19.05

EDCBA

12841310370360

2801012

1252

Model

P100,125

P71

Keep duct-work length 850mm or more.
Be sure to apply the air filter (field supply) near the air inlet grille.

Refrigerant piping flare connection (liquid ø9.52 copper tube):HP
Refrigerant piping flare connection (gas øF copper tube):LP
Drain R1 (External thread)
Electrical parts box
Electric Heater
Drain Pump (Option)
Drain Pipe (Option) ··· Flexible joint VP25(I.D.ø32)
Filter

8

7

6

5

4

3

2

1

Set

PEHD-P71, 100, 125, 140EAH

13

2. REMOTE CONTROLLER

(Front view) (Side view) (Rear view)

120

130

19

83.5

46

14

7

WIRING DIAGRAM

P.B.

TO OUTDOOR UNIT

TO MA-REMOTE
CONTROLLER
DC8.7-13V

I.B.

P.B.

ZNR

FUSE

X1

X5

X6

X4

POWER SUPPLY
~(1PHASE)
230V 50Hz

12

L

INSIDE SECTION OF CONTROL BOX

12345

123

4

987654321

1

2

CN32

CN51

CN41

CN90

CN31

CN29CN21CN20

CN22

5731

13

CN3C

2
1

TH1 TH2 TH5

212

1

2

1

3

21

12

3

CN24

2

1

C

MF

12 534 6

1331

S2
S1

S3

TB4

TB5

1

2

12 534 6

BLU

RED

RED

RED

26H

FS2FS1

H

88H2

88H1

88H2

88H1

1

2

3

4

MF

C

12 534 6

DS

DP

(WHT)

(WHT)

(YLW)

(WHT)

(WHT)

(WHT)

(BLK)

(WHT)

(RED)

(BLU)

B
L
U

B
L
U

(WHT)

CN2D

BLK

WHT

(BLU)

B
L
U

B
L
U

BRN
ORN

YLW

(RED)

(WHT)

CNSK

CN2S

13

2

1

(RED)

(WHT)

(RED)

OFF

ON

SWE

SW2

SW1

2

1

(RED)

LED1
LED2
LED3

CN2L

(ORN)

31

CND

(RED)

CNDK

(BLU)

CNP

(WHT)

FAN

X1

X6X5X4

PE

TB2

L
N

1

3

CN31

FB

Optional parts

Optional parts

<PEHD-P71·100·125·140EAH>
External static
pressure 130Pa

<PEHD-P71·100·125·140EAH>
External static
pressure 70Pa

<PEHD-P35·50·60EAH>
External static

pressure 30Pa
<PEHD-P35·50·60EAH>
External static
pressure 70Pa

ON
OFF

12345

ON
OFF

12345

ON
OFF

12345

ON
OFF

12345

ON
OFF

12345

ON
OFF

12345

ON
OFF

12345

54321

OFF

ON

35EAH

50EAH

60EAH

71EAH

100EAH

125EAH

140EAH

Capacity cord
switch

Model selection
switch

SW2

SW1

MODELS

P
N
K

P
N
K

B
L
K

Y
L
W

O
R
N

B
L
K

W
H
T

B
L
K

W
H
T

B
L
K

W
H
T

W
H
T

B
R
N

O
R
N

(OPTIONAL PARTS)

CHOKE COILS

FERRITE CORE

HEATER CONTACTOR

HEATER THERMAL SWITCH

HEATER

THERMAL FUSE

DRAIN PUMP

RELAY(DRAIN PUMP)

X1

CONNECTOR(WIRELESS)

DP
DS

TRANSMISSION(INDOOR.OUTDOOR)

LED3

SWITCH(MODEL SELECTION)

SW1

SWITCH(CAPACITY CORD)

SW2

SWITCH(EMERGENCY OPERATION)

SWE

POWER SUPPLY(REMOTE CONTROLLER)

LED2

LED1

POWER SUPPLY(I.B.)

CN90

CN51

CONNECTOR(CENTRALLY CONTROL)

CN24 CONNECTOR(HEATER)

VARISTOR

FUSE(T6.3AL250V)

ZNR

FUSE

INDOOR POWER BOARD

HEATER

FB
L

COND./EVA. TEMP. THERMISTOR
(0

°C/15KΩ,25°C/5.4KΩ DETECT)

PIPE TEMP. THERMISTOR/LIQUID
(0

°C/15KΩ,25°C/5.4KΩ DETECT)

INTAKE AIR TEMP. THERMISTOR
(0

°C/15KΩ,25°C/5.4KΩ DETECT)

TERMINAL BLOCK(REMOTE CONTROLLER)

DRAIN SENSOR

DRAIN PUMP

TH5

TH2

TH1

TB5

(INDOOR/OUTDOOR CONNECTING LINE)

TERMINAL BLOCKTB4

TERMINAL BLOCK(HEATER)TB2

FAN MOTORMF

CAPACITOR(FAN MOTOR)C

NAMENAME

SYMBOLSYMBOL

NAME

RELAY(FAN MOTOR)

RELAY(FAN MOTOR)

CONNECTOR(HA TERMINAL-A)

CONNECTOR(REMOTE SWITCH)

INDOOR CONTROLLER BOARD

RELAY(FAN MOTOR)

CONNECTOR(LOSSNAY)

X6

X5

X4

FS1,2

88H1,2

26H

H

CN41

CN32

CN2L

I.B.

SYMBOL

NOTE 1.SINCE THE OUTDOOR SIDE ELECTRIC WIRING MAY CHANGE BE SURE

TO CHECK THE OUTDOOR UNIT ELECTRIC WIRING FOR SERVICING.

2.INDOOR AND OUTDOOR CONNECTING WIRES ARE MADE WITH POLARITIES,
MAKE WIRING MATCHING TERMINAL NUMBERS(S1,S2,S3).

3.SYMBOLS USED IN WIRING DIAGRAM ABOVE ARE,

:CONNECTOR, :TERMINAL.

4.THE WIRING BETWEEN MA-REMOTE CONTROLLER AND TB5 IS INCLUDED
IN THE PACKAGE.

PEHD-P35, 50, 60, 71, 100, 125, 140EAH

15

8

REFRIGERANT SYSTEM DIAGRAM

PEHD-P35, 50, 60, 71, 100, 125, 140EAH

Indoor unit

Indoor
heat
exchanger

Refrigerant flow in cooling
Refrigerant flow in heating

Strainer

Thermistor
TH5

Thermistor
TH2

Distributor
with strainer

16

9

TROUBLESHOOTING

<Error code display by self-diagnosis and actions to be taken for service (summary)>

Present and past error codes are logged and displayed on the wired remote controller or controller board of outdoor unit.
Actions to be taken for service and the inferior phenomenon reoccurrence at field are summarized in the table below. Check
the contents below before investigating details.

9-1. TROUBLESHOOTING

Unit conditions at service

Error code

Actions to be taken for service (summary)

The inferior phenomenon is
reoccurring.

Displayed

Not displayed

Judge what is wrong and take a corrective action
according to “SELF-DIAGNOSIS ACTION TABLE” (9-2).

Identify the cause of the inferior phenomenon and take
a corrective action according to “TROUBLESHOOTING
BY INFERIOR PHENOMENA ” (9-3).

The inferior phenomenon is
not reoccurring.

Logged

Not logged

1Consider the temporary defects such as the work of
protection devices in the refrigerant circuit including
compressor, poor connection of wiring, noise and etc.
Re-check the symptom, and check the installation
environment, refrigerant amount, weather when the
inferior phenomenon occurred, and wiring related.
2Reset error code logs and restart the unit after finishing
service.
3There is no abnormality in electrical components,
controller boards, and remote controller.

1Recheck the abnormal symptom.
2Identify the cause of the inferior phenomenon and take

a corrective action according to “TROUBLESHOOTING
BY INFERIOR PHENOMENA ” (9-3).
3Continue to operate unit for the time being if the cause
is not ascertained.
4There is no abnormality in electrical components,
controller boards, remote controller etc.

17

9-2. SELF-DIAGNOSIS ACTION TABLE

Note: Refer to the manual of outdoor unit for the details of display

such as F, U, and other E.

Error Code

Meaning of error code and detection method

Cause

Countermeasure

P1

Abnormality of room temperature
thermistor (TH1)

1 The unit is in three-minute resume

prevention mode if short/open of
thermistor is detected. Abnormal if the
unit does not reset normally after three
minutes. (The unit returns to normal
operation, if it has normally reset.)

2 Constantly detected during cooling,

drying, and heating operation.
Short: 90: or more
Open: -40: or less

1 Defective thermistor

characteristics.

2 Contact failure of connector

(CN20) on the indoor controller
board. (Insert failure)

3 Breaking of wire or contact

failure of thermistor wiring.

4 Defective indoor controller

board.

1–3 Check resistance value of thermistor.
0: ······15.0k"
10: ····9.6k"
20: ····6.3k"
30: ····4.3k"
40: ····3.0k"
If you put force on (draw or bend) the lead wire
with measuring resistance value of thermistor
breaking of wire or contact failure can be
detected.
2 Check contact failure of connector (CN20) on

the indoor controller board. Refer to 9-6.
Turn the power on again and check restart
after inserting connector again.

4 Check room temperature display on remote

controller.
Replace indoor controller board if there is
abnormal difference with actual room
temperature.

Turn the power off, and on again to operate
after check.

P2

Abnormality of pipe temperature
thermistor/Liquid (TH2)

1 The unit is in three-minute resume

prevention mode if short/open of
thermistor is detected. Abnormal if the
unit does not reset normally after three
minutes. (The unit returns to normal
operation, if it has normally reset.)

2 Constantly detected during cooling,

drying, and heating (except defrosting)
operation.
Short: 90: or more
Open: -40: or less

1 Defective thermistor

characteristics.

2 Contact failure of connector

(CN21) on the indoor controller
board. (Insert failure)

3 Breaking of wire or contact

failure of thermistor wiring.

4 Defective refrigerant circuit is

causing thermistor temperature
of 90: or more or -40: or
less.

5 Defective indoor controller board.

1–3 Check resistance value of thermistor.

For characteristics, refer to (P1) above.
2 Check contact failure of connector (CN21) on

the indoor controller board. Refer to 9-6. Turn
the power on and check restart after inserting
connector again.

4 Check pipe <liquid> temperature with remote

controller in test run mode. If pipe <liquid>
temperature is exclusively low (in cooling
mode) or high (in heating mode), refrigerant
circuit may have defective.

5 Check pipe <liquid> temperature with remote

controller in test run mode. If there is exclusive
difference with actual pipe <liquid> temperature,
replace indoor controller board.

Turn the power off, and on again to operate
after check.

P4

Abnormality of drain sensor (DS)

1 Suspensive abnormality, if short/open of

thermistor is detected for 30 seconds
continuously.
Turn off compressor and indoor fan.

2 Short/open is detected for 30 seconds

continuously during suspensive
abnormality.
(The unit returns to normal operation,

if it has normally reset.)

3 Detect the following condition.

• During cooling and drying operation.

• In case that pipe <liquid> temperature

- room temperature <-10deg

(Except defrosting)

• When pipe <liquid> temperature or
room temperature is short/open
temperature.

• During drain pomp operation.

1 Defective thermistor

characteristics

2 Contact failure of connector

(CN31) on the indoor controller
board. (Insert failure).

3 Breaking of wire or contact

failure of drain sensor wiring.

4 Defective indoor controller board.

1–3 Check resistance value of thermistor.

0: ······6.0k"
10: ····3.9k"
20: ····2.6k"
30: ····1.8k"
40: ····1.3k"
2 Check contact failure of connector (CN31) on

the indoor controller board. Refer to 9-6. Turn
the power on again and check restart after
inserting connector again.

4 Replace indoor controller board if drain

pump operates with the line of drain sensor
connector CN31-1 and 2 is short-circuited,
and abnormality reappears.

Turn the power off, and on again to operate
after check.

P5

Malfunction of drain pump (DP)

1 Suspensive abnormality, if thermistor

of drain sensor is let heat itself and
temperature rises slightly. Turn off
compressor and indoor fan.

2 Drain pomp is abnormal if the condition

above is detected during suspensive
abnormality.

3 Constantly detected during drain pomp

operation.

1 Malfunction of drain pump
2 Defective drain

Clogged drain pump
Clogged drain pipe

3 Attached drop of water at the

drain sensor

• Drops of drain trickles from
lead wire.

• Clogged filter is causing
wave of drain.

4 Defective indoor controller board.

1 Check if drain-up machine works.
2 Check drain function.
3 Check the setting of lead wire of drain sensor

and check clogs of the filter.

4 Replace indoor controller board if drain

pump operates with the line of drain sensor
connector CN31-1 and 2 is short-circuited
and abnormality reappears.
Refer to 9-6.

Turn the power off, and on again to operate
after check.

18

Error Code

Meaning of error code and detection method

Cause

Countermeasure

P6

Freezing/overheating protection is
working

1 Freezing protection (Cooling mode)

The unit is in six-minute resume prevention
mode if pipe <liquid or condenser/evap­orator> temperature stays under

-15: for three minutes, three minutes
after the compressor started. Abnormal
if it stays under -15: for three minutes
again within 16 minutes after six-minute
resume prevention mode.
<Frost prevention mode>
If pipe <liquid or condenser-evaporator>
temperature is 2: or below when 16
minutes has passed after compressor
starts operating, unit will start operating
in frost prevention mode which stops
compressor operation. After that, when
pipe <liquid or condenser/evaporator>
temperature stays 10: or more for 3
minutes, frost prevention mode will be
released and compressor will restart its
operation.

2 Overheating protection (Heating mode)

The units is in six-minute resume
prevention mode if pipe <condenser /
evaporator> temperature is detected as
over 70: after the compressor started.
Abnormal if the temperature of over
70: is detected again within 10 minutes
after six-minute resume prevention
mode.

P8

1 Slight temperature difference

between indoor room
temperature and pipe <liquid
or condenser / evaporator>
temperature thermistor

• Shortage of refrigerant

• Disconnected holder of pipe

<liquid or condenser /

evaporator> thermistor

• Defective refrigerant circuit

2 Converse connection of

extension pipe (on plural units
connection)

3 Converse wiring of indoor/

outdoor unit connecting wire
(on plural units connection)

4 Defective detection of indoor

room temperature and pipe
<condenser / evaporator>
temperature thermistor

5 Stop valve is not opened

completely.

(Cooling or drying mode)

1 Clogged filter (reduced airflow)
2 Short cycle of air path
3 Low-load (low temperature)

operation beyond the tolerance
range

4 Defective indoor fan motor

• Fan motor is defective.

• Indoor controller board is

defective.

5 Defective outdoor fan control
6 Overcharge of refrigerant
7 Defective refrigerant circuit

(clogs)

(Heating mode)

1 Clogged filter (reduced airflow)
2 Short cycle of air path
3 Over-load (high temperature)

operation beyond the tolerance
range

4 Defective indoor fan motor

• Fan motor is defective.

• Indoor controller board is

defective.

5 Defective outdoor fan control
6 Overcharge of refrigerant
7 Defective refrigerant circuit

(clogs)

8 Bypass circuit of outdoor unit

is defective.

(Cooling or drying mode)

1 Check clogs of the filter.
2 Remove shields.

4 Measure the resistance of fan motor's winding.

Measure the output voltage of fan's connector
(FAN) on the indoor controller board.
WThe indoor controller board should be

normal when voltage of AC 220~240V is
detected while fan motor is connected.
Refer to 9-6.

5 Check outdoor fan motor.
67 Check operating condition of refrigerant

circuit.

(Heating mode)

1 Check clogs of the filter.
2 Remove shields.

4 Measure the resistance of fan motor's

winding.
Measure the output voltage of fan's connector
(FAN) on the indoor controller board.
WThe indoor controller board should be

normal when voltage of AC 220~240V is
detected while fan motor is connected.
Refer to 9-6.

5 Check outdoor fan motor.
6~8Check operating condition of refrigerant

circuit.

Abnormality of pipe temperature

<Cooling mode>
Detected as abnormal when the pipe tem­perature is not in the cooling range 3 min­utes later of compressor start and 6 min­utes later of the liquid or condenser/evapo­rator pipe is out of cooling range.
Note 1) It takes at least 9 min. to detect.
Note 2) Abnormality P8 is not detected in

drying mode.
Cooling range : -3 deg ] (TH-TH1)
TH: Lower temperature between: liquid

pipe temperature (TH2) and con­denser/evaporator temperature (TH5)

TH1: Intake temperature

<Heating mode>
When 10 seconds have passed after the
compressor starts operation and the hot
adjustment mode has finished, the unit is
detected as abnormal when
condenser/evaporator pipe temperature is
not in heating range within 20 minutes.

Note 3) It takes at least 27 minutes to

detect abnormality.
Note 4) It excludes the period of defrosting

(Detection restarts when defrosting

mode is over)
Heating range : 3 deg [ (TH5-TH1)

1~4 Check pipe <liquid or condenser /

evaporator> temperature with room
temperature display on remote
controller and outdoor controller circuit
board.
Pipe <liquid or condenser / evaporator>
temperature display is indicated by
setting SW2 of outdoor controller circuit
board as follows.

23Check converse connection of extension

pipe or converse wiring of indoor/outdoor
unit connecting wire.

Conduct temperature check with outdoor
controller circuit board after connecting
‘A-Control Service Tool(PAC-SK52ST)’.

(

)

19

Error Code

Meaning of error code and detection method

Cause

Countermeasure

P9

Abnormality of pipe temperature ther­mistor / Condenser-Evaporator (TH5)

1 The unit is in three-minute resume pro-

tection mode if short/open of thermistor
is detected. Abnormal if the unit does
not get back to normal within three min­utes. (The unit returns to normal opera­tion, if it has normally reset.)

2 Constantly detected during cooling, dry-

ing, and heating operation (except
defrosting)
Short: 90: or more
Open: -40: or less

1 Defective thermistor

characteristics

2 Contact failure of connector

(CN29) on the indoor controller
board. (Insert failure)

3 Breaking of wire or contact

failure of thermistor wiring.

4 Temperature of thermistor is

90: or more or -40: or less
caused by defective refrigerant
circuit.

5 Defective indoor controller

board.

1–3 Check resistance value of thermistor.

For characteristics, refer to (P1) above.

2 Check contact failure of connector (CN29)

on the indoor controller board.
Refer to 9-6.
Turn the power on and check restart after
inserting connector again.

4 Operate in test run mode and check pipe

<condenser / evaporator> temperature with
outdoor controller circuit board. If pipe
<condenser / evaporator> temperature is
exclusively low (in cooling mode) or high (in
heating mode), refrigerant circuit may have
defective.

5 Operate in test run mode and check pipe

<condenser / evaporator> temperature with
outdoor control circuit board. If there is
exclusive difference with actual pipe
<condenser / evaporator> temperature
replace indoor controller board.
There is no abnormality if none of above
comes within the unit.
Turn the power off and on again to operate.

E0

or

E4

Remote controller transmission
error(E0)/signal receiving error(E4)

1 Abnormal if main or sub remote con-

troller can not receive normally any
transmission from indoor unit of refriger­ant address “0” for three minutes.
(Error code : E0)

2 Abnormal if sub remote controller could

not receive for any signal for two min­utes. (Error code: E0)

1 Abnormal if indoor controller board can

not receive normally any data from
remote controller board or from other
indoor controller board for three minutes.
(Error code: E4)

2 Indoor controller board cannot receive

any signal from remote controller for two
minutes. (Error code: E4)

1 Check disconnection or looseness of indoor

unit or transmission wire of remote controller.

2 Set one of the remote controllers “main”.

If there is no problem with the action above.

3 Check wiring of remote controller.

• Total wiring length: max.500m
(Do not use cablex 3 or more)

• The number of connecting indoor units:
max.16units

• The number of connecting remote con­troller: max.2units

When it is not the above-mentioned problem of

1~3
4 Diagnose remote controllers.

a) When “RC OK” is displayed,

Remote controllers have no problem.
Put the power off, and on again to check.
If abnormality generates again, replace
indoor controller board.

b) When “RC NG” is displayed,

Replace remote controller.
c) When “RC E3” is displayed,
d) When “ERC 00-06” is displayed,
[ c),d)→Noise may be causing abnormality. ]

∗ If the unit is not normal after replacing

indoor controller board in group control,
indoor controller board of address “0”
may be abnormal.

E3

or

E5

Remote controller transmission
error(E3)/signal receiving error(E5)

1 Abnormal if remote controller could not

find blank of transmission path for six
seconds and could not transmit.

(Error code: E3)

2 Remote controller receives transmitted

data at the same time, compares the
data, and when detecting it, judges
different data to be abnormal 30
continuous times. (Error code: E3)

1 Abnormal if indoor controller board could

not find blank of transmission path.

(Error code: E5)

2 Indoor controller board receives trans-

mitted data at the same time, compares
the data,and when detecting it, judges
different data to be abnormal 30
continuous times. (Error code: E5)

1 Set a remote controller to main, and the

other to sub.

2 Remote controller is connected with only one

indoor unit.

3 The address changes to a separate setting.

4~6 Diagnose remote controller.

a) When “RC OK”is displayed, remote con-

trollers have no problem.

Put the power off,and on again to check.
When becoming abnormal again, replace

indoor controller board.
b)When “RC NG”is displayed, replace

remote controller.
c)When “RC E3”or “ERC 00-66”is displayed,

noise may be causing abnormality.

1 Contact failure at transmission

wire of remote controller

2 All remote controllers are set

as “sub” remote controller. In
this case, E0 is displayed on
remote controller, and E4 is
displayed at LED (LED1, LED2)
on the outdoor controller circuit
board.

3 Mis-wiring of remote controller.
4 Defective transmitting receiving

circuit of remote controller

5 Defective transmitting receiving

circuit of indoor controller board
of refrigerant address “0”.

6 Noise has entered into the

transmission wire of remote
controller.

1 Two remote controller are set

as “main.”

(In case of 2 remote con-

trollers)

2 Remote controller is connected

with two indoor units or more.

3 Repetition of refrigerant

address.

4 Defective transmitting receiving

circuit of remote controller.

5 Defective transmitting receiving

circuit of indoor controller
board.

6 Noise has entered into trans-

mission wire of remote con­troller.

In case of checking pipe temperature
with outdoor controller circuit board,
be sure to connect A-control service
tool (PAC-SK52ST).

(

)

20

E6

1 Contact failure, short circuit or,

mis-wiring (converse wiring) of
indoor/outdoor unit connecting
wire

2 Defective transmitting receiving

circuit of indoor controller board

3 Defective transmitting receiving

circuit of indoor controller board

4 Noise has entered into indoor/

outdoor unit connecting wire.

∗ Check LED display on the outdoor control cir-

cuit board. (Connect A-control service tool,
PAC-SK52ST.)
Refer to EA-EC item if LED displays EA-EC.

1 Check disconnection or looseness of indoor/

outdoor unit connecting wire of indoor unit or
outdoor unit.

Check all the units in case of twin triple
indoor unit system.

2-4 Turn the power off, and on again to

check. If abnormality generates again,

replace indoor controller board or outdoor

controller circuit board.

∗ Other indoor controller board may have

defective in case of twin triple indoor unit
system.

E7

Indoor/outdoor unit communication
error (Transmitting error)

Abnormal if “1” receiving is detected 30
times continuously though indoor controller
board has transmitted “0”.

1 Defective transmitting receiving

circuit of indoor controller board

2 Noise has entered into power

supply.

3 Noise has entered into outdoor

control wire.

1-3 Turn the power off, and on again to

check. If abnormality generates again,

replace indoor controller board.

Indoor/outdoor unit communication
error (Signal receiving error)

1 Abnormal if indoor controller board

cannot receive any signal normally for
six minutes after putting the power on.

2 Abnormal if indoor controller board

cannot receive any signal normally for
three minutes.

3 Consider the unit abnormal under the

following condition: When two or more
indoor units are connected to one
outdoor unit, indoor controller board
cannot receive a signal for three minutes
from outdoor controller circuit board, a
signal which allows outdoor controller
circuit board to transmit signals.

Error Code

Meaning of error code and detection method

Cause

Countermeasure

Fb

Abnormality of indoor controller board

Abnormal if data cannot be normally read
from the nonvolatile memory of the indoor
controller board.

1 Defective indoor controller

board.

1 Replace indoor controller board.

E1

or

E2

Abnormality of remote controller con­trol board

1 Abnormal if data cannot be normally

read from the nonvolatile memory of the
remote controller control board.

(Error code: E1)

2 Abnormal if the clock function of remote

controller cannot be normally operated.

(Error code: E2)

1 Defective remote controller.

1 Replace remote controller.

21

(For the separate indoor/outdoor unit power sup-

ply system)

1 Power supply of 220~240V AC is not supplied to

indoor unit.

2 The connectors of the optional replacement kit are

not used.

3 Defective indoor controller board.

4 Defective indoor power board.

9-3. TROUBLESHOOTING BY INFERIOR PHENOMENA

Note: Refer to the manual of outdoor unit for the detail of remote

controller.

Phenomena

Cause

Countermeasure

(1)LED2 on indoor controller board

is off.

• When LED1 on indoor controller board is also off.

1 Power supply of rated voltage is not supplied to out-

door unit.

2 Defective outdoor controller circuit board.

3 Power supply of 220~240V is not supplied to indoor

unit.

4 Defective indoor power board.

5 Defective indoor controller board.

1 Check the voltage of outdoor power

supply terminal block (L, N) or (L

3, N).

• When AC 220~240V is not detected.
Check the power wiring to outdoor unit
and the breaker.

• When AC 220~240V is detected.
—Check 2 (below).

2 Check the voltage between outdoor

terminal block S1 and S2.

• When AC 220~240V is not detected.
Check the fuse on outdoor controller
circuit board.
Check the wiring connection.

• When AC 220~240V is detected.
—Check 3 (below).

3 Check the voltage between indoor terminal

block S1 and S2.

• When AC 220~240V is not detected.
Check indoor/outdoor unit connecting
wire for mis-wiring.

• When AC 220~240V is detected.
—Check 4 (below).

4 Check voltage output from CN2S on indoor

power board (DC13.1V). Refer to 9-6-1.

• When no voltage is output.
Check the wiring connection.

• When output voltage is between
DC12.5V and DC13.7V.

—Check 5 (below).

5 Check the wiring connection between

indoor controller board and indoor power
board. Check the fuse on indoor controller
board. If no problems are found, indoor
controller board is defective.

• When LED1 on indoor controller board is lit.

1 Mis-setting of refrigerant address for outdoor unit

(There is no unit corresponding to refrigerant
address “0”.)

1 Reconfirm the setting of refrigerant

address for outdoor unit

Set the refrigerant address to “0”.
(For grouping control system under
which 2 or more outdoor units are
connected, set one of the units to “0”.)
Set refrigerant address using SW1 (3-6)
on outdoor controller circuit board.

1 Check the voltage of indoor power supply

terminal block (L,N).

• When AC220~240V is not detected.
Check the power supply wiring.

• When AC220~240V is detected.

-Check 2 (below).

2 Check that there is no problem in the

method of connecting the connectors.

• When there are problems in the method
of connecting the connectors.
Connect the connector correctly refer­ring to installation manual of an optional
kit.

• When there is no problem in the
method of connecting the connectors.

-Check 3 (below).

3 Check voltage output from CNDK on

indoor controller board.

• When AC220~240V is not detected.
Check the fuse on indoor controller
board.
Check the wiring connection between
indoor power supply terminal block and
CND on indoor controller board.

• When AC220~240V is detected.

-Check 4 (below).

4 Check voltage output from CN2S on

indoor power board.

• When no voltage output.
Check the wiring connection between
CNDK on indoor controller board and
CNSK on indoor power board.
If no problem are found,indoor power
board is defective.

• When DC12.5~13.7V is detected.
Check the wiring connection between
CN2S on indoor power board and
CN2D on indoor power board.
If no problem are found,indoor con­troller board is defective.

22

Note: Refer to the manual of outdoor unit for the detail of remote

controller.

(3)Upward/downward vane

performance failure

1 The vane is not downward during defrosting and

heat preparation and when the thermostat is OFF in
HEAT mode. (Working of COOL protection function)

2 Vane motor does not rotate.

• Defective vane motor

• Breaking of wire or connection failure of connector

• Up/down vane setting is “No vanes”.

3 Upward/downward vane does not work.

• The vane is set to fixed position.

1 Normal operation (The vane is set to hor-

izontal regardless of remote control.)

2 Check 2 (left).

• Check the vane motor. (Refer to “How
to check the parts”.)

• Check for breaking of wire or connec­tion failure of connector.

• Check “Up/down vane setting”. (Unit
function selection by remote controller).

3 Normal operation (Each connector on

vane motor side is disconnected.)

Phenomena

Cause

Countermeasure

(2)LED2 on indoor controller board

is blinking.

• When LED1 on indoor controller board is also blinking.
Connection failure of indoor/outdoor unit connecting
wire

• When LED1 is lit.

1 Mis-wiring of remote controller wires

Under twin triple indoor unit system, 2 or more indoor
units are wired together.

2 Refrigerant address for outdoor unit is wrong or not

set.

Under grouping control system, there are some units
whose refrigerant address is 0.

3 Short-cut of remote controller wires
4 Defective remote controller

Check indoor/outdoor unit connecting wire
for connection failure.

1 Check the connection of remote con-

troller wires in case of twin triple indoor
unit system. When 2 or more indoor units

are wired in one refrigerant system,
connect remote controller wires to one of
those units.

2 Check the setting of refrigerant address

in case of grouping control system.

If there are some units whose refrigerant
addresses are 0 in one group, set one of
the units to 0 using SW1 (3-6) on outdoor
controller circuit board.

34 Remove remote controller wires and

check LED2 on indoor controller board.

• When LED2 is blinking, check the
short-cut of remote controller wires.

• When LED2 is lit, connect remote
controller wires again and:
if LED2 is blinking, remote controller
is defective; if LED2 is lit, connection
failure of remote controller terminal
block etc. has returned to normal.

(4)Receiver for wireless remote

controller

1 Weak batteries of wireless remote controller.

2 Contact failure of connector (CNB) on wireless

remote controller board.

(Insert failure)

3 Contact failure of connector (CN90) on indoor con-

troller board.(Insert failure)

4 Contact failure of connector between wireless

remote controller board and indoor controller board.

1 Replace batteries of wireless remote con-

troller.

2~4

Check contact failure of each connector.
If no problems are found of connector,
replace indoor controller board.
When the same trouble occurs even if
indoor controller board is replaced,
replace wireless remote controller
board.

23

9-4. When wired remote controller or indoor unit micro computer troubles

1. If there is not any other wrong when trouble occurs, emergency operation starts as the indoor controller board switch (SWE)
is set to ON.
During the emergency operation the indoor unit is as follows;

(1) Indoor fan high speed operation (2) Drain-up machine operation

2. When emergency operating for COOL or HEAT, setting of the switch (SWE) in the indoor controller board and outdoor unit
emergency operation are necessary.

3. Check items and notices as the emergency operation

(1) Emergency operation cannot be used as follows;

• When the outdoor unit is something wrong.

• When the indoor fan is something wrong.

• When drain over flow protected operation is detected during self-diagnosis. (Error code : P5)

(2) Emergency operation will be serial operation by the power supply ON/OFF.

ON/OFF or temperature, etc. adjustment is not operated by the remote controller.

(3) Do not operate for a long time as cold air is blown when the outdoor unit starts defrosting operation during heat emer-

gency operation.
(4) Cool emergency operation must be within 10 hours at most. It may cause heat exchanger frosting in the indoor unit.
(5) After completing the emergency operation, return the switch setting, etc. in former state.
(6) Since vane does not work at emergency operation, position the vane manually and slowly.

24

0

10

20

30

40

50

-20 -10 0 10 20 30 40 50

< Thermistor for lower temperature >

Temperature (:)

Resistance (K")

<Thermistor Characteristic graph>

Room temperature thermistor(TH1)
Pipe temperature thermistor(TH2)
Condenser/evaporator temperature
thermistor(TH5)

Thermistor R

0=15k" ±3%

Fixed number of B=3480k" ±2%

Rt=15exp { 3480( ) }

0: 15k"
10: 9.6k"
20: 6.3k"
25: 5.2k"
30: 4.3k"
40: 3.0k"

Thermistor for
lower temperature

1

273+t

1

273

9-5. HOW TO CHECK THE PARTS

Parts name Check points

Disconnect the connector then measure the resistance using a tester.
(Surrounding temperature 10:~30:)

(Refer to the thermistor)

Room temperature
thermistor (TH1)

Pipe temperature
thermistor (TH2)

Condenser/Evaporator
temperature thermistor
(TH5)

Normal

4.3k"~9.6k"

Abnormal

Open or short

25

9-6.TEST POINT DIAGRAM

9-6-1. Power board

PEHD-P35EAH, PEHD-P50EAH, PEHD-P60EAH, PEHD-P71EAH
PEHD-P100EAH, PEHD-P125EAH, PEHD-P140EAH

CNSK
Connect to the indoor controller board
(CNDK)
Between

11

to 33220-240V AC

CN2S
Connect to the indoor controller board (CN2D)
Between

11

to

33

12.6-13.7V DC (Pin11(+))

26

9-6-2. Indoor controller board

PEHD-P35EAH, PEHD-P50EAH, PEHD-P60EAH, PEHD-P71EAH
PEHD-P100EAH, PEHD-P125EAH, PEHD-P140EAH

FAN
Fan motor output

CNP
Drain-pump output
(DP)
(220~240V AC)

CNC
Dew prevention
heater (H2)
(220~240V AC)

CNDK
Connect to the indoor
power board (CNSK)
(220~240V AC)

FUSE
(6.3A 250V)

CND
Power
supply input
(220~240V AC)

SWE
Emergency operation

SW2
Capacity setting

SW1
Model setting

CN2L
Connector
(LOSSNAY)

CN51
Centrally control

CN6V
Vane motor output
(MV)

CN90
Connect to the
wireless remote
controller board
(CNB)

CN31
Drain sensor (DS)

CN29
Condenser/evaporator
temperature thermistor
(TH5)

CN21
Pipe temperature
thermistor/Liquid
(TH2)

CN20
Room temperature
thermistor (TH1)

CN22
Remote controller
connecting wire
(10.4~14.6V DC)

LED3
Transmission
(Indoor/outdoor)

LED2
Power supply
(R.B)

LED1
Power supply
(I.B)

CN2D
Connector to the indoor
power board (CN2S)
(12.5~13.7V DC)

CN3C
Transmission
(Indoor/outdoor)
(0~24V DC)

}

}

Non polarity

+

–

+

–

CN41
Connector
(HA terminal-A)

27

SW1

Setting by the dip switch and jumper wire

Functions

Jumper wire

Model
settings

Capacity
settings

Pair number
setting with
wireless
remote
controller

For service board

Remarks

SW2

J41
J42

Unit type
setting

JP1

Indoor
controller
board type
setting

JP3

0
1
2

3 ~ 9

Wireless remote
controller setting

Control PCB setting

J41 J42

<Settings at time of factory shipment>
Wireless remote controller: 0
Control PCB: (for both J41 and J42)
Four pair number settings are supported.
The pair number settings of the wireless remote
controller and indoor control PCB (J41/J42) are
given in the table on the left.
(' ' in the table indicates the jumper line is disco­nnected.)

There is no jumper (JP1) because these models
have the cond./eva. temperature thermistor (TH5).

(Marks in the table below) Jumper wire ( : Short : Open)

Without TH5

With TH5

Model

JP1

Factory shipment

Service parts

Indoor controller board type

JP3

12345

ON

OFF

Service board

MODELS

1 2 3 4 5

1 2 3 4 5

PEHD-P35EAH

ON
OFF

PEHD-P50EAH

1 2 3 4 5

ON
OFF

PEHD-P60EAH

ON
OFF

1 2 3 4 5

1 2 3 4 5

PEHD-P71EAH

ON
OFF

PEHD-P100EAH

1 2 3 4 5

ON
OFF

PEHD-P125EAH

ON
OFF

1 2 3 4 5

PEHD-P140EAH

ON
OFF

9-7. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE

Each function is controlled by the dip switch and the jumper wire on control p.c. board.
SW1 and SW2 are equipped only for service parts.
Model setting and capacity setting are memorized in the nonvolatile memory of the control p.c. board of
the unit.

28

10

DISASSEMBLY INSTRUCTIONS

Figure1.

11

. Removing the fan motor

1. Removing the 9 screws that fix the bottom plate A,

and remove it.

2. Removing the drain pan as follows:
(1) Remove the screw that fix the drain pan.
(2) Slide the drain pan in the direction 1, Figure1

and unhook the drain pan catch near the drain
pipe.

(3) Slide the drain pan in the direction 2, Figure1

and unhook the 2 catches on the other side of
the drain pipe.

3. Remove the 8 screws that fix the bottom plate

assembly, and remove it.

4. Disconnect the fan motor connector from the con-

troller box.
(For the models with booster heater, disconnect the
booster heater connector as well.)

5. Remove the fan base plate as follow:

Figure2.

(1) Remove the 4 screws1
(2) Slide down the fan base plate to remove.

6. Removal of the fan motor:
(1) Remove the Sirocco fan securing screw (one

screw each fan)

(2) Remove fan housing screws (four screws each

housing)
(3) Remove motor base bracket (four screws)
(4) Remove motor from motor base bracket by the

two screws (one on each motor rubber mount-

ing clamp)
(5) Remove the fan and housing from the motor

shaft (slide away from the motor)

Drain pan
catches (Hidden)

Disconnect the fan motor connecter
(and the booster heater connector)

Filter

1

2

Bottom plate

A

Drain pan

1

Heat exchanger

Bottom plate
assembly

Drain pan
catches (Hidden)

Fan base

1

29

Figure3.

22

. Removing the booster heater

1. Remove the bottom plate, drain pan, and bottom
plate assembly. (Refer 1-1~3.)

2. Disconnect the booster heater connector from the
controller box.

3. Remove the 2 lower screws on the both sides of
the booster heater.

4. Loosen the 2 upper screws on the both sides of the
booster heater.

5. Removing the booster heater.

Figure4.

Fan base

Sirocco fan

Booster heater

Motor

Housing
assembly

Bush

Piece

Piece

Leg

Bush

Screw holes

Motor base
(Only PEHD-P71
EAH)

Sirocco fan

Housing assembly

Booster heater

30

11

PARTS LIST

PEHD-P35EAH, PEHD-P50EAH, PEHD-P60EAH, PEHD-P71EAH
PEHD-P100EAH, PEHD-P125EAH, PEHD-P140EAH

EXTERNAL PARTS

9, 10

No.

Part No. Part Name Drawing No.

1

S70 031 669

2

S70 011 669

3

S70 081 669

S70 091 669

4

S70 K04 480

5

S70 K05 480

6

S70 011 529

7

8

S70 021 529

9

S70 021 500

10

S70 031 500

Drain pan ass’y

Filter

Filter

W638939Z04Bottom plate 1

W638917Z04Bottom plate 1

W638940G03Bottom plate 2 ass’y

W638918G03Bottom plate 2 ass’y

W268527G11H.EX.General ass’y

W268527G12H.EX.General ass’y

W638942G01Drain pan ass’y

W638920G01

W645496G02

W645496G03

PEHD-

P35EAH

1

1

PEHD-

P50EAH

11

1

1

11

11

PEHD-

P60EAH

1

1

1

1

1

5, 6

3, 4

7, 8

1.2

Qt’y/set

Spec.

31

14.15.16

Part No. Part Name Drawing No.

No.

1

S70 041 669

2

S70 042 669

3

S70 040 669

4

S70 051 669

5

S70 052 669

6

S70 050 669

7

S70 K06 480

8

S70 K07 480

9

S70 K08 480

10

S70 K09 480

11

S70 050 529

12

S70 060 529

13

S70 040 529

14

S70 050 500

S70 040 500

15

S70 010 500

16

Bottom plate 1

Bottom plate 2 ass’y

H.EX.General ass’y

Drain pan ass’y

Filter

Filter

Filter

W634050Z01Bottom plate 1

W634028Z01Bottom plate 1

W631101Z04

W634052G01Bottom plate 2 ass’y

W634030G01Bottom plate 2 ass’y

W631188G02

W268528G07H.EX.General ass’y

W268528G08H.EX.General ass’y

W268528G09H.EX.General ass’y

W268529G03

W634056G01Drain pan ass’y

W634034G01Drain pan ass’y

W631186G01

W645497G01

W645497G02

W645497G03

PEHD-

P71EAH

1

1

1

1

1

PEHD-

PEHD-

P100EAH

P125EAH

1

1.2.3

11

11

1

11

11

Qt’y/set

PEHD-

P140EAH

1

1

1

1

1

7.8.9.10

4.5.6

11.12.13

Spec.

32

5, 6

7, 8

1

1

4

4

9, 10, 11

12

7, 8

5, 6

2, 3

13, 14

PEHD-P35EAH, PEHD-P50EAH, PEHD-P60EAH, PEHD-P71EAH
PEHD-P100EAH, PEHD-P125EAH, PEHD-P140EAH

BLOWER PARTS

Part No. Part Name Drawing No.

No.

1

S70 652 131

2

S70 051 677

3

S70 061 677

4

S70 922 105

S70 A88 114

5

6

S70 A89 114

S70 989 110

7

8

S70 985 110

9

S70 Y57 220

10

S70 Y58 220

11

S70 Y56 220

12

S70 652 130

13

S70 Y07 300

S70 Y03 300

14

Attachment

Sirocco fan

Housing ass’y

Motor

Motor support

PEHD-

PEHD-

P50EAH

P35EAH

W353715H01 22

W638932G03Fan base ass’y

W638905G03Fan base ass’y

W818836H01Bush

W122296G02

W122297G02Sirocco fan

W638949G03

W638949G04Housing ass’y

P714315X02Motor

P714316X02Motor

P714774X01

W241060H03

P493639X02Heater ass’y 3

P493640X02Heater ass’y 4

2

1

2

2

2

1

1

1

1

2

2

1

1

1

PEHD-

P60EAH

1

22

2

2

1

1

1

Qt’y/set

<MF>

<MF>

<MF>

33

8

9

2

1

2

1.20

6.7

6.7

10.11.12

13.14

21

9

8

3.4.5

15.16.17

18.19

No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

Part No. Part Name Drawing No.

Qt’y/set

R02K338H02 222

22

22

22

2

2

2

2

1

1

1

1

1

1

2

2

2

2

1

1

1

1

1

1

1

1

1

2

2

2

1

1

1

2

R02K338G82

W631187G02

W860050H02

W631126G02

W631120G02

W241060H03

P714940X01

W631122Z04

W258903G09

P412223X01

W353715H01

W634069Z02

with a nut

20-25L

<MF>250W,1Phase 220~ 240V

<MF>240W,1Phase 220~ 240V

<MF>150W,1Phase 220~ 240V

<C>

<C>

S70 508 131

S70 508 132

S70 073 677

S70 072 677

S70 070 677

S70 922 105

S70 Y01 105

S70 Y07 114

S70 001 110

S70 Y15 220

S70 Y16 220

S70 Y17 220

S70 652 130

S70 Y08 130

S70 Y04 300

S70 Y05 300

S70 Y06 300

S70 010 255

S70 020 255

S70 652 131

S70 090 130

Piece

Piece

Fan base ass’y

W634036G02Fan base ass’y

W634058G02Fan base ass’y

Bush

Sirocco fan

Housing ass’y

Motor

Motor support

P714941X01Motor

P714964X01Motor

Leg

Heater ass’y 5

W258903G08Heater ass’y 4

W258903G07Heater ass’y 3

Capacitor 16

Attachment

Motor base

P412172X01Capacitor 6

W818836H01Bush

✽: Not illustrated

✽

PEHD-

P125EAH

PEHD-

P100EAH

PEHD-

P71EAH

PEHD-

P140EAH

34

PEHD-P35EAH, PEHD-P50EAH, PEHD-P60EAH, PEHD-P71EAH
PEHD-P100EAH, PEHD-P125EAH, PEHD-P140EAH

CONTROL BOX PARTS

5

8

6

7

4

1

Part No. Part Name Drawing No.

No.

S70 979 717

1

S70 435 717

2

S70 K06 313

3

S70 274 215

4

5

S70 KW3 202

6

S70 KW2 202

S70 KW1 202

7

S70 K70 310

8

Part No. Part Name Drawing No.

No.

S70 979 317

1

2

S70 435 717

S70 K06 313

3

S70 274 215

4

5

S70 KW3 202

S70 KW2 202

6

7

S70 KW1 202

8

S70 K70 310

Terminalbed

Terminalbed

Power Board

Start relay

Thermistor

Thermistor

Thermistor

Controller board

Terminalbed

Terminalbed

Power Board

Start relay

Thermistor

Thermistor

Thermistor

Controller board

P436110X01

BA73S950H02

RG00B435F08

P421221X01

W905588G01

W906303G02

W906303G01

RG00D008B02

P436110X01

BA73S950H02

RG00B435F08

P421221X01

W905588G01

W906303G02

W906303G01

RG00D008B02

3

PEHD-

P35EAH

1

1

PEHD-

P71EAH

1

1

PEHD-

PEHD-

P60EAH

P50EAH

1

1

PEHD-

PEHD-

P125EAH

P100EAH

1

1

222

111

111

222

111

111

1

1

111

111

222

111

111

1

1

Qt’y/set

Qt’y/set

PEHD-

P140EAH

2222

1

1

2

1

1

1

1

2

Spec.

< TB4 >

<

TB5 >

PWB

LY1F< 88H1,2 >

< T H1> RED

< TH2 > WHITE

<

TH5 > BLACK

I.B

Spec.

< TB4 >

< TB5 >

PWB

LY1F< 88H1,2

< T H1> RED

< TH2 > WHITE

< TH5 > BLACK

I.B

>

35

PEHD-P35EAH, PEHD-P50EAH, PEHD-P60EAH, PEHD-P71EAH
PEHD-P100EAH, PEHD-P125EAH, PEHD-P140EAH

ELECTRICAL PARTS

1

TEMP.

ON/OFF

2

No. Part No. Part Name Drawing No.

1

S70 KW1 713

2

S70 030 305

No. Part No. Part Name Drawing No.

1

2

S70 030 305

Remote controller

Remote controller cable

Remote controllerS70 KW1 713

Remote controller cable

P972122X01

W873334G05

P972122X01

W873334G05

PEHD-

P35EAH

PEHD-

P71EAH

PEHD-

PEHD-

P60EAH

P50EAH

PEHD-

PEHD-

P125EAH

P100EAH

111

111

111

1

Qt’y/set

Qt’y/set

PEHD-

P140EAH

1

111

Spec.

MA Remo-con

10 m

Spec.

MA Remo-con

10 m

36

12

OPTIONAL PARTS

1. REFRIGERANT PIPES

Service Ref. : PEHD-P35,50,60,71EAH

Service Ref. : PEHD-P100,125,140EAH

Note 1. How to connect refrigerant pipes.

Factory supplied optional refrigerant pipings contain refrigerant at the above atmospheric pressures. As long as
connection takes no more than 5 minutes, no air will enter, and there will be no need for air purging.
Remove the blind caps and make the connections within 5 minutes. After the connections for the indoor and out­door units are made, open the stop valve on the outdoor unit to allow refrigerant gas to flow.
If piping length exceeds 5m, an additional charge of refrigerant is needed.

Note 2. The following main parts are contained in the optional refrigerant piping kit.

Heat insulating cover, vinyl tapes, nipples, sleeve and flange (for wall hole).

Part No.
Pipe length
Pipe size O.D.
Connection method

PAC-05FFS-E

5m

PAC-07FFS-E

7m

PAC-10FFS-E

10m

PAC-15FFS-E

15m

Liquid : ø9.52 Gas : ø15.88

Indoor unit : Flared Outdoor unit : Flared

Part No.
Pipe length
Pipe size O.D.
Connection method

PAC-SC51PI-E

5m

PAC-SC52PI-E

7m

PAC-SC53PI-E

10m

PAC-SC54PI-E

15m

Liquid : ø9.52 Gas : ø19.05

Indoor unit : Flared Outdoor unit : Flared

2. REMOTE SENSOR

3. REMOTE OPERATION ADAPTER

4. REMOTE ON/OFF ADAPTER

Part No. PAC-SE41TS-E

PEHD-P35,50,60,71,100,125,140EAHApplied model

Part No. PAC-SF40RM-E

PEHD-P35,50,60,71,100,125,140EAHApplied model

Part No. PAC-SE55RA-E

PEHD-P35,50,60,71,100,125,140EAHApplied model

37

5. OPTIONAL MOTOR

The external static pressure of 130Pa allows long ducts to be used more extensively to enable the most convenient posi­tioning of indoor units.

6. DRAIN WATER LIFT-UP MECHANISM

This allows more versatility when selecting drain piping layouts.

Part No. PAC-SK005MT-F PAC-SK004MT-F PAC-SK003MT-F

PEHD-P71EAH PEHD-P100EAH PEHD-P125,140EAHApplied model

Part No. PAC-KE03DM-G

Applied model PEHD-P35,50,60,71,100,125,140EAH

38

HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

HWE05070
Issued in Aug. 2005
Printed in Japan

New publication, effective Aug. 2005
Specifications subject to change without notice.

TM