Mitsubishi PEFY-P80VMHS-E, PEFY-P40VMHS-E, PEFY-P50VMHS-E, PEFY-P63VMHS-E, PEFY-P100VMHS-E Technical & Service Manual

AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

Model name
<Indoor unit>

Model name
<Indoor unit>

PEFY-P40VMHS-E, PEFY-P50VMHS-E
PEFY-P63VMHS-E, PEFY-P71VMHS-E
PEFY-P80VMHS-E, PEFY-P100VMHS-E
PEFY-P125VMHS-E, PEFY-P140VMHS-E

Series PEFY

Ceiling Concealed

2017

Indoor unit

SAFETY PRECAUTIONS

Read before installation and performing electrical work

Symbol explanations

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.

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

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: Yell ow>

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: Yel low>

Carefully read the labels affixed to the main unit.

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.

WARNING

CAUTION

WARNING

WARNING

1

       



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 infil-

trate 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 ofrefrigerant or airinto 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 b efore 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 gener-
ated.

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 recom-
mended by Mitsubishi Electric may result in smoke, fire, or
explosion.

Consult your dealer for proper disposal method.

Do not use a leak detection additive.

Do not use the existing refrigerant piping.
A large amount of chlorine that may be contained in the re-

sidual 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 deox-
idized 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 refrig-
erator oil to deteriorate.

Store the piping materials indoors, and keep both ends of
the pipes sealed until immediately before brazing. (Keep el-
bows 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 re-
frigerator 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.

Useavacuum 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 cy-
cle and cause the refrigerator oil to deteriorate.

Prepare tools for exclusive use with R410A. Do not use the
following tools if they have been used with the conventional
refrigerant: gauge manifold, charging hose, gas leak detec-
tor, 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.



2

CONTENTS

SAFETY PRECAUTIONS ·························································································· 1

1. FEATURES ··········································································································· 4

2. PART NAMES AND FUNCTIONS ········································································ 5

3. SPECIFICATION ··································································································· 8

4. OUTLINES AND DIMENSIONS ·········································································· 11

5. WIRING DIAGRAM ······························································································ 13

6. REFRIGERANT SYSTEM DIAGRAM ································································· 14

7. TROUBLE SHOOTING ························································································ 15

8. DISASSEMBLY PROCEDURE ············································································· 22

3

PEFY-P40VMHS-E

PEFY-P50VMHS-E

PEFY-P63VMHS-E

PEFY-P71VMHS-E

PEFY-P80VMHS-E

PEFY-P100VMHS-E

PEFY-P125VMHS-E

PEFY-P140VMHS-E

4.5 / 5.0

5.6 / 6.3

7.1 / 8.0

8.0 / 9.0

9.0 / 10.0

11.2 / 12.5

14.0 / 16.0

16.0 / 18.0

FEATURES

1

Indoor unit

Ceiling Concealed

Series PEFY

Models

Cooling capacity/Heating capacity

kW

4

PART NAMES AND FUNCTIONS

2

Air inlet

Air outlet

2-1. Indoor (Main) Unit

5

Fri

Room

Set temp.

Mode Temp. Fan

Cool Auto

Main

Main display:

Cursor Page

Main menu

Vane

•

Louver

•

Vent. (Lossnay)
High power
Timer
Weekly timer
OU silent mode

2-2. Remote Controller

[PAR-32MAA]
Once the operation mode is selected, the unit will remain in the selected mode until changed.

(1) Remote Controller Buttons

Function buttons

The functions of the function buttons change depending on the screen.
Refer to the button function guide that appears at the bottom of the LCD for
the functions they serve on a given screen.
When the system is centrally controlled, the button function guide that
corresponds to the locked button will not appear.

Function guide

Main menuMain display

Press to turn ON/OFF the indoor unit.

Press to save the setting.

Press to return to the previous screen.

Press to bring up the Main menu.

Operation settings will appear.
When the backlight is off, pressing any button turns the backlight on and it will
stay lit for a certain period of time depending on the screen.

When the backlight is off, pressing any button turns the backlight on
and does not perform its function. (except for the [ON/OFF] button)

This lamp lights up in green while the unit is in operation. It blinks while the
remote controller is starting up or when there is an error.

Main display: Press to change the operation mode.
Main menu: Press to move the cursor down.

Main display: Press to decrease temperature.
Main menu: Press to move the cursor up.

Main display: Press to increase temperature.
Main menu: Press to go to the previous page.

Main display: Press to change the fan speed.
Main menu: Press to go to the next page.

E

F

I

J

G

H

A

B

C

D

E

F

I JG H

ABCD

I JG H I JG H

6

Fri

Mode Temp. Fan

Room

Cool Auto

Set temp.

Fri

Cool

Mode Temp. Fan

AutoSet temp.

(2) Remote Controller Display

The main display can be displayed in two different modes: "Full" and "Basic."
The factory setting is "Full." To switch to the "Basic" mode, change the setting on the "Main display" setting screen (Main menu > Initial setting >
Main display).

Full mode Basic mode

* All icons are displayed for explanation.

Indoor unit operation mode appears here.

Set temperature appears here.

Current time appears here.

Fan speed setting appears here.

Functions of the corresponding buttons appear here.

Appears when the ON/OFF operation is centrally controlled.

Appears when the operation mode is centrally controlled.

Appears when the set temperature is centrally controlled.

Appears when the filter reset function is centrally controlled.

Current room temperature appears here.

Appears when the buttons are locked.

Appears when the On/Off timer, Night setback, or Auto-off timer function is
enabled.

appears when the timer is disabled by the centralized control system.

Appears when the Weekly timer is enabled.

Appears while the units are operated in the energy-save mode. (Will not
appear on some models of indoor units)

Appears while the outdoor units are operated in the silent mode.

Appears when the built-in thermistor on the remote controller is activated to
monitor the room temperature ( ).

appears when the thermistor on the indoor unit is activated to monitor the
room temperature.

Indicates the vane setting.

Indicates the louver setting.

Indicates the ventilation setting.

Appears when the set temperature range is restricted.

Most settings (except ON/OFF, mode, fan speed, temperature) can
be made from the Main menu.

Indicates when filter needs maintenance.

11

12 13 14 15 16 17 18

19

20

1

3

4

9

21

2

5

7

10

11

1

6

8

2

3

4

5

15

16

17

18

19

20

21

9

10

12

13

14

6

7

8

11Room temperature

Operation mode

1

Set temperature

2

Clock

Fan speed

Button function guide

3

4

5

7

3

SPECIFICATION

3-1. Specification

Power source

Model

kWCooling capacity ❇1
kW

kWCooling
Heating
Cooling
Heating

kW

A
A

mm
mm
mm

kg

m

3

/min

Pa 50/100/150/200

kW

mm

mm

dB(A)

20-23-27 24-27-32 24-26-30

Heating capacity ❇1
Power

consumption

Current

External finish

Dimension

Height

Width

Depth
Net weight
Heat exchanger

Fan

Type
Airflow rate

(Lo-Mid-Hi)

External static pressure

❇

2

Motor

Output

Type

Air filter (option)

Refrigerant
pipe dimension

Gas

(Brazed)

Liquid

(Brazed)

Drain pipe dimension

Noise level (Lo-Mid-Hi)

745 1030

35

Cross fin (Aluminum plate fin and copper tube)

Sirocco fan

✕

DC motor

Synthethic fiber unwoven cloth filter(long life)

10.0-12.0-14.0

~

220-240V 50Hz /60Hz

PEFY-P40VMHS-E PEFY-P50VMHS-E

5.64.5

6.35.0

Galvanizing

380

900

1 Sirocco fan✕2

12.7

6.35

32 (1-1/4 inch)

0.121

0.055

0.055

0.41

0.41

0.090

0.090

0.64

0.64

0.075

0.075

0.54

0.54

45

ø

ø

9.52

ø

PEFY-P63VMHS-E

7.1

8.0

ø

15.88

13.5-16.0-19.0

0.244

PEFY-P71VMHS-E

8.0

9.0

15.5-18.0-22.0

Note: ❇1 Cooling/Heating capacity indicates the maximum value at operation under the following condition.

Cooling : Indoor 27˚CDB/19 ˚CWB,Outdoor 35˚CDB (WR2: water 30˚C)
Heating : Indoor 20˚CDB,Outdoor 7˚CDB/6˚CWB (WR2: water 20˚C)

❇

2 The external static pressure is set to 50Pa at factory shipment.

8

Power source

kWCooling capacity ❇1
kW

kWCooling
Heating
Cooling
Heating

kW

A
A

mm
mm
mm

kg

m

3

/min

Pa 50/100/150/200

kW

mm

mm

dB(A) 25-27-30 27-31-34 27-32-36

Heating capacity ❇1
Power
consumption

Current

External finish

Dimension

Height

Width

Depth
Net weight
Heat exchanger

Fan

Type
Airflow rate

(Lo-Mid-Hi)

Motor

Output

Type

Air filter (option)

Refrigerant
pipe dimension

Gas

(Brazed)

Liquid

(Brazed)
Drain pipe dimension
Noise level (Lo-Mid-Hi)

~

1030 1195

45

Cross fin (Aluminum plate fin and copper tube)

DC motor

Synthethic fiber unwoven cloth filter(long life)

18.0-21.5-25.0

220-240V 50Hz /60Hz

PEFY-P80VMHS-E

PEFY-P100VMHS-E

11.29.0

12.510.0

Galvanizing

380

900

Sirocco fan

✕

2

32 (1-1/4 inch)

0.244

0.160

0.160

1.05

1.05

0.190

0.190

1.24

1.24

0.090

0.090

0.63

0.63

51 53

15.88

ø

9.52

ø

PEFY-P125VMHS-E

14.0

16.0

26.5-32.0-38.0

0.375

PEFY-P140VMHS-E

16.0

18.0

28.0-34.0-40.0

Note: ❇1 Cooling/Heating capacity indicates the maximum value at operation under the following condition.

Cooling : Indoor 27˚CDB/19 ˚CWB,Outdoor 35˚CDB (WR2: water 30˚C)
Heating : Indoor 20˚CDB,Outdoor 7˚CDB/6˚CWB (WR2: water 20˚C)

❇

2 The external static pressure is set to 50Pa at factory shipment.

Model

External static pressure

❇

2

9

DC12V Stepping motor

0~1800pulse

DC12V Stepping motor

0~1800pulse

DC12V

Stepping motor

0~1800pulse

LEV

MF1,2

3-2. Electrical parts specifications

Model

Parts

name

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

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

FUSE 250V 6.3A

TB2 (L,N, ) 250V 20A

TB5
TB15

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

Fuse

(Indoor con-

troller board)

Power supply
terminal bed

Transmission
terminal bed

Room
temperature
thermistor

Fan motor

(with Inner-

thermostat)

8-pole, output 121W
SIC-70CW-D8121-3

8-pole, output 244W

SIC-101CW-D8244-3

10-pole, output 375W

KMUC4E1MW

Symbol

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

Liquid pipe
thermistor

Linear
expansion valve

PEFY-

P40VMHS-E

PEFY-

P50VMHS-E

PEFY-

P63VMHS-E

PEFY-

P71VMHS-E

PEFY-

P80VMHS-E

PEFY-

P100VMHS-E

PEFY-

P125VMHS-E

PEFY-

P140VMHS-E

10

4

OUTLINES AND DIMENSIONS

Unit : mm

4-1. OUTLINES AND DIMENSIONS

Drain hose (I.D.ø32)

(Actual length)

<Accessory>

Note 1.

2.

3.

Use an M10 screw for the suspension bolt (field supply).

This drawing is for PEFY-P71

·

80

·

100

·

125

·

140VMHS-E models,

which have 2 fans.PEFY-P40

·

50

·

63VMHS-E models have 1 fan.

Make sure to install the air filter (field supply) on the air intake side.

In case field supplied air filter is used, attach it

where the filter service is easily done.

DE GHFACB

Liquid pipe

ø6.35ø12.7

ø9.52ø15.88

1085

1250

Gas pipe

PEFY-P71

·

80VMHS-E

PEFY-P100

·

125

·

140VMHS-E

1039

1204

754

965

1130

680

885

1050

600

835

1000

550

42.5

25

50

17

21

11

800

1000

700

900

J

67

50

50

LK

800

15

19

10

500 450

PEFY-P63VMHS-E

PEFY-P40

·

50VMHS-E

Model

Inlet air

side view

To p

view

Outlet air

side view

To p

Bottom

Piping

side view

Air inlet Air outlet

2x5-ø3 holes

15

L

50

50x(J-1)=K

23

B(Suspension bolt pitch)

A

814

904

900

847

10

41

E(Duct)

94250

2xJ-ø3 holes

143

25

50x4=200

45 50x5=250

380

F

50

40

65 C

50x(G-1)=H

10

16 340

D(Duct)

(Duct)

Suspension bolt hole

(Suspension bolt pitch)

80

4-14x30 Slot

2xG-ø3 holes

(Duct)

Te rminal block

(Power source)

Control box

brazing connection (gas)

Drain pipe

2x6-ø3 holes

brazing connection (liquid)

(O.D.ø32)

(Gravity drain)

Refrigerant piping

Refrigerant piping

115

44.5

115

(Transmission)

29

60

24 29

15

50

Te rminal block

187

69

344.5

58

50

32

0

-10

2

2

1

1

11

Unit : mm

Model C M N

PEFY-P40

·

50VMHS-E

680 780 0~50

PEFY-P63VMSH-E

PEFY-P71

·

80VMHS-E 965 1065 100~150

PEFY-P100

·

125

·

140VMHS-E 1130 1230 200~250

[Maintenance access space]

Secure enough access space to allow for the maintenance, inspection, and replacement of the motor, fan, heat exchanger,

drain pan and control box in one of the following ways.

Select an installation site for the indoor unit so that it's maintenance access space will not be obstructed by

beam or other objects.

Create access door 1 (450x450mm) for the maintenance from the unit side when the thermistor, LEV

and control box is exchanged. (Fig.2,4)

(1) When a space of 300mm or more is available below the unit between the unit and the ceiling.

Create access door 2 (600x600mm) for the maintenance from the bottom when the motor, fan, heat exchanger and drain pan is

cleaned (exchanged). (Fig.2)

(2) When a space of less than 300mm is available below the unit between the unit and the ceiling.

(At least 20mm of space should be left below the unit as shown in Fig.3.)

Create access door 3 for the maintenance from the bottom when the motor, fan, heat exchanger and drain pan is

cleaned (exchanged). (Fig.4)

Supply air

Intake air

Control box

Access door 1

Ceiling Ceiling beam

Min. 20mm

Min. 20mm

Control box

Access door 3

Access door 1

(450x450)

50900

450

100~200

1000

M

50 C

150~200

450

Bottom of

indoor unit

(Viewed from the direction

of the arrow Y)

Maintenance

access space

Fig.4

Supply

air

Intake

air

Y

Fig.3

Supply air

Intake air

Control box

Access door 1

Ceiling Ceiling beam

Min. 20mm

Min. 300mm

Control box

Access door 2

(600x600)

Access door 1

(450x450)

450100~200

C

150~200

450

Bottom of

indoor unit

(Viewed from the direction

of the arrow Z)

Maintenance

access space

Fig.2

Supply

air

Intake

air

Z

Fig.1

600

600

900

150~200

N

50

12

5

WIRING DIAGRAM

FS

LEV

TH21 TH22TH23

1

3

INSIDE SECTION OF CONTROL BOX

M

CN2A

*Optional parts

1
2

43

CN4F

1
2

t˚ t˚ t˚

CN3A

(Blue)

(Black)

1
2

43

1
2

43

CN20

(Red)

CN41

LED2

CN44

CN4F

CN60

CN51

23456

: Connector, : Terminal,

(Heavy dotted line): Field wiring,

(Thin dotted line): Optional parts.

test or test run.

* Be sure to turn off the SWE after completing a drainage

To perform a drainage test for the drain pump turn on the

SWE on the control board while the indoor unit is being

powered.

5.

CN52

(Green)

SW1

SW2

SW3

SW4

Since the outdoor side electric wiring may change be sure

to check the outdoor unit electric wiring for servicing.

Symbols used in wiring diagram are

2.

NOTE)1.

Have all electric work done by a licensed electrician

according to the local regulations.

Earth leakage circuit breaker should be set up on the

wiring of the power supply.

3.

4.

CN32

0

1

0

0

1

9

2

8

3

7

4

6

5

SW12

(10ths digit)

1

9

2

8

3

7

4

6

5

SW11

(1s digit)

2
1

TB15

TO MA

CONTROLLER

REMOTE

F

2

E

3

D

4

C

5

B

6

A

7

9

SW21

8

SW22

1

SW14

(BRANCH No.)

CNE

456723 89

1

CN90

(Red)

CN105

SWE

OFF

ON

LED1

CN2M

(Blue)

2
1

CNP

3

1

3
21

(White)

3
21

(SHEILD)

S
M2
M1

TB5

TO

OUT DOOR UNIT

BC CONTROLLER

M

DP

1~

REMOTE

CONTROLLER

Switch (for static pressure selection)

Switch (for static pressure selection)

Switch (BRANCH No.)

SW14

SW21

Connector (emergency operation)

LED (Power supply)

LED (Remote controller supply)

SW22

SWE

LED1

LED2

Switch (10ths digit address set)

Indoor controller board

SW12

I.B.

Wireless remote controller board

Switch (Heating on/off)

Buzzer

LED (Run indicstor)

Receiving unit

BZ1

LED1

RU

SW1

Switch (Cooling on/off)

SW2

W.B .

*Optional parts

13

MF

DB

NAME SYMBOL NAMENAME

Var istor

Connector (0-10V Analog input)

Indoor controller board

ZNR001,002

CN2A

I.B.

TO NEXT INDOOR UNIT

Connector (Remote switch)

Connector (HA terminal-A)

Connector (Centrally control)

Connector (Remote indication)

Connector (Wireless)

CN32

CN41

CN51

CN52

CN90

Connector (IT terminal)

Switch (for mode selection)

Switch (for capacity code)

Switch (for mode selection)

CN105

SW1

SW2

SW3

Switch (for model selection)

Switch (1s digit address set)

SW4

SW11

ZNR001

U

DC280

~340V

ZNR002

U

CND

(Red)

SA

31

5

N
L

CNACL

M

1~

1

+-

2

3

4

4321

7

CNMF1

531

7

CNDB

(Black)

3

1

F1

I.B.

TB2

FUSE(16A)

SW1SW2

W.B .

BZ1

LED1

RU

RECEIVER

CN1

543216789

ACL

*Optional parts

PULL BOX

POWER SUPPLY

BREAKER(16A)

50/60Hz

SYMBOL EXPLANATION

~220,230,240V

AC reactor (Power factor improvement)

ACL

SYMBOL SYMBOL

Diode Bridge

DB

Drain Pump

Float switch

FS

DP

Fan Motor

Electrical linear expansion valve

MF

LEV

Power source terminal block

TB2

Transmission ter minal block

TB5

Transmission ter minal block

TB15

Thermistor (inlet air temp.detection)

Thermistor (piping temp.detection/liquid)

Thermistor (piping temp.detection/gas)

Indoor controller board

TH21

TH22

TH23

I.B.

Arrester

Fuse AC250V 6.3A

SA

F1

REFRIGERANT SYSTEM DIAGRAM

6

Gas pipe

PEFY-P40,50VMHS-E

Liquid pipe

Capacity

Item

ø 12.7 <1/2F>

ø 6.35 <1/4F>

ø 15.88 <5/8F>

ø 9.52 <3/8F>

PEFY-P63,71,80,100,125,140VMHS-E

Gas pipe thermistor TH23

Liquid pipe thermistor TH22

Heat exchanger

Linear expansion valve

Strainer (#100mesh)

Room temperature thermistor TH21

Strainer (#100mesh)

Gas pipe

Brazed joints

14

7

TROUBLE SHOOTING

7-1. 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)

AbnormalNormal

4.3k

- 9.6k Open or short

1) Thermistor characteristic graph

(Refer to the thermistor characteristic graph below.)

Low-temperature thermistor

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

Thermistor R

0

= 15 k 3%

Multiplier of B = 3480 k 2%

9.6k

6.3k

5.2k

4.3k

3.0k

(A) Temperature (°C)

(B) Resistance (k )

Rt = 15 exp { 3480( ) }

1

273+t

1

273

(B)

10

20

30

40

50

-20 -10 0 10 20 30 40 50

(A)

0

(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.

(A) Red (E) Yellow

(C) Blue (F) White

(D) Orange

AbnormalNormal

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

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

(150 ) 10%

1
2
3
4

6

M

(A)

(C)

(D)

(E)

(F)

CN60

LEV

15k0°C
10°C
20°C
25°C
30°C
40°C

15

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)

Pulse signal output and valve operation

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.

(A) Red (G) Control board

(C) Blue (H) Connection (CN60)

(D) Orange (I) Drive circuit

(E) Yellow (J) Linear expansion valve

(F) White

Phase

number

1ONOFF OFF ON

2ONONOFF OFF

3 OFF ON ON OFF

4 OFF OFF ON ON

Output pulse

1234

1

(H)

(J)

(A)

(A)

(B)

(C)

(C)

(D)

(D)

(E)

(E)

(F)

(F)

M

4

6

2

3

5

1

4

3

6

5

2

(I)

12VDC

16

6

5

4

3

2

1

1 k

LED

When the power is turned on, a pulse signal of fully open pulse + 10% pulse 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

RemedyChecking CriteriaSymptom

Circuit failure on
the microcomputer

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

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.

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

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

Replace the LEV.

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

Replace the LEV.

2) LEV operation

(a) Close

(b) Open

(c) Fully open valve (2000 pulses)

(d) No. of pulses

(e) Extra tightening (41 pulses)

(f) Valve opening degree

(f)

(e)

(a)

(b)

(d)

(c)

Locked LEV

Disconnected or
shorted LEV motor
coils

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

17

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

2. Check if the drain pump works and drains water properly in cooling operation.

3. If no water drains, confirm that the check code 2502 will not be displayed 10 minutes after the
operation starts.

Note: The drain pump for this model is driven by the internal DC motor of controller board, so it is not

possible to measure the resistance between the terminals.

The fan starts to rotate.

Purple

-

Black: Abnormal (check code 2502) if it outputs 0-13 V square wave (5 pulses/rotation), and

the number of rotaion is not normal.

(A) Moving part

(B) Switch

(C) Magnet

Position of the moving part Normal Abnormal

Up Short (any position but short)

Down Open (any position but open)

(5) Drain float switch (CN4F)

1. Check if the drain float switch works properly.

Normal
Red

-

Black: Input 13V DC

(4) Drain pump

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.

Replace the LEV
if the amount of
leakage is great.

(A)Termistor (TH21)

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

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

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

(A)

LEV

Red
Purple
Black

1
2
3

1
2
3
4

(A)

(A)

(B)

(C)

18

7-2. DC fan motor (fan motor/indoor control board)

1. CAUTION
A high voltage is applied to the connector for connection to the fan motor (CNMF1).

Do not unplug the connector CNMF1 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
(CNMF1).

Fix the connection.

Yes

No

Is the fan motor connector
(CNMF1) fully inserted?

Replace the indoor control board.

Yes

No

Is the voltage within the
normal range?

Check the power supply.

Measure the voltage at the indoor control board.

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.]

Power supply voltage

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

VDC

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
V

FG

.

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

Replace the indoor control board.

Yes

No

Replace the motor.

Are 0VDC and 15VDC
displayed alternately?

19

7-3. Setting of address switch

Make sure that power source is turning off.

1)

* It is not necessary setting address in case of using unit remote controller.

2)
Refer to install manual of outdoor unit, operate the address setting.

3)

Address " 3 " setting is composed SW11 " 3 " and SW12 " 0 " .
Address " 25 " setting is composed SW11 " 5 " and SW12 " 2 " .

Indoor unit do not run without address setting in field.

Incase using network remote controller, address is set by rotary switches.(SW11,SW12)

Indoor unit address setting rule is different by each field work.

Setting the address is combination of SW11(1st digit address setting) and SW12(2nd digit address setting).

SW22

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

0

1

2

3

4

5

6

7

8

9

0

1

2

3

4

5

6

7

8

9

Indoor unit control board

SW2SW1 SW4SW3

SW21

SW12SW14 SW11

20

SWESW22SW21SW4SW3SW2SW1Models

Symbol Silk display

Main power source

Tr ansmission power source

LED operation under normal state

At applying main power source (indoor unit 200V) Lighting

At receiving M-NET transmission power source Lighting

LED1

LED2

PEFY-P40VMHS-E

PEFY-P50VMHS-E

PEFY-P63VMHS-E

PEFY-P71VMHS-E

PEFY-P80VMHS-E

PEFY-P100VMHS-E

PEFY-P125VMHS-E

PEFY-P140VMHS-E

ON

1

2345678910

The figure at left shows that the switches 1 through 5 are set to ON and 6 through 10 are set to OFF.

ON

1

2345678910

ON

1

23456

ON

1

2345678910

ON

1

23456

ON

1

234

ON

1

2345678

ON

1

ON

1

2345678910

ON

1

23456

ON

1

2345678910

ON

1

23456

ON

1

2345678910

ON

1

23456

ON

1

234

ON

1

2345678

ON

1

ON

1

2345678910

ON

1

23456

ON

1

2345678910

ON

1

23456

ON

1

234

ON

1

2345678

ON

1

ON

1

2345678910

ON

1

23456

ON

1

2345678910

ON

1

23456

ON

1

234

ON

1

2345678

ON

1

ON

1

2345678910

ON

1

23456

ON

1

2345678910

ON

1

23456

ON

1

234

ON

1

2345678

ON

1

ON

1

2345678910

ON

1

23456

ON

1

2345678910

ON

1

23456

ON

1

234

ON

1

2345678

ON

1

ON

1

2345678910

ON

1

23456

ON

1

234

ON

1

2345678

ON

1

ON

1

2345678910

ON

1

23456

ON

1

2345678910

ON

1

23456

ON

1

234

ON

1

2345678

ON

1

7-4. Setting of Dip-switch (at delivery)

7-5. Function the LED of the indoor unit service board

21

Fixing screws

8

DISASSEMBLY PROCEDURE

1.Removing the control box cover

(1) Remove the fixing screws (three) of the control box (A), and

remove the cover.(Fig.1)

*At this stage, the following servicing is possible. (Fig.2)

1 Operation and check of the switches (listed below) which

are on the control board.

• Dip switch SW1 ············· Function change

• Dip switch SW2 ·············· Capacity code setting

• Dip switch SW3 ·············· Function change

• Dip switch SW4 ·············· Model code setting

• Dip switch SW21 ············ Static pressure setting

• Dip switch SW22 ············ Function setting

• Rotary switches SW11, 12 ··· Address setting

• Rotary switch SW14 ········· Branch port setting

2 Connection check of the lead wires (listed below) which are

connected to the controller board.

• Power supply lead wire.

• Network remote contoller transmission lead wire.

• Fan motor lead wire.

• LEV lead wire

• Intake air sensor lead wire

• Liquid piping sensor lead wire

• Gas piping sensor lead wire
(• Drain pump lead wire)
(• Drain sensor lead wire)

3 Control board exchange
4 Condenser exchange
5 Fuse (Fuse holder) exchange
6 Relay exchange
7 Intake air sensor exchange

( ):Optional parts

8Power supply terminal bed exchange
9Transmission terminal bed exchange x 2

8-1. CONTROL BOX

Be careful on removing heavy parts.

Fig.1

Fig.2

FIGURES

OPERATING PROCEDURE

22

Connector CNMF1

Fig.1

Fig.2

Fig.3

8-2. FAN and FAN MOTOR

FIGURES

OPERATING PROCEDURE

1. Remove the control box cover according to the procedure
in section 8-1. CONTROL BOX.

2. Removing the fan motor cable

(1) Disconnect the connector (CNMF1) from the control board.
(2) Remove the cable through the rubber bush.

3. Removing the bottom plate

(2) Pull out the fan motor in the direction of the arrow.

(1) Remove the fifteen fixing screws on the bottom plate to

remove it.

4. Removing the fan case

(1) Remove the eight fixing screws on the fan case to remove

it.

5. Removing the fan and fan motor

Exercise caution when removing heavy parts.

(1) Remove the two fixing screws and attachment on the fan

motor.

Be careful on removing heavy parts.

23

Fig.4

Fig.5

FIGURES

OPERATING PROCEDURE

6. Precautions for reinstalling the removed motor in its
original position

(1) P40-80

Fix the motor in place so that the stamp printed on the
motor faces front when viewed from the air inlet. (Fig.4)

(2) P100-140

Fix the motor in place so that the protruding portion
on the motor and the stopper of the motor leg are
positioned as shown in Fig. 5.

Be careful on removing heavy parts.

Viewed from left

Stamp

Protruding portion

Stopper

24

(A)

LEV

Fixing screws

Thermister

8-3.

LEV,THERMISTOR (Liquid/Gas piping temperature detection)

1.Removing the LEV.

(1) Remove the control box cover with procedure 8-1.
(2) Remove the fixing screws (five) of the heat exchanger cover

(A),and remove the cover (A).(Fig.1)

(3) Remove the LEV driving motor.(Fig.2)

2.Removing the thermistors.

(1) Remove the thermistors from the thermistor holders which

are installed on the piping.(Fig.3)
(liquid piping :large piping , gas piping :small piping)

Fig.1

Fig.2

Fig.3

Be careful on removing heavy parts.

FIGURES

OPERATING PROCEDURE

25

Bottom plate

Drainpan

Fixing

screws

Fixing
screws

Cover(A)

Cover(B)

8-4. HEAT EXCHANGER

1.Removing the heat exchanger.

(1) Remove the heat exchanger cover with procedure 8-3-1.
(2) Remove the bottom plate which is air outlet side. (fixing

screws : twelve) (Fig.1)
(3) Remove the drainpan.(Fig.2)
(4) Remove the cover (A), (B).
(fixing screws : two x 2)(Fig.3)

Fig.1

Fig.2

Fig.3

Be careful on removing heavy parts.

FIGURES

OPERATING PROCEDURE

26

Fixing

screws

Fixing screws

Fixing screws

Maintenance cover

(5) Remove the maintenance cover. (fixing screws : four) (Fig.5)
(6) Remove the heat exchanger. (fixing screws : four) (Fig.4,6)

*Removerd heat exchanger is as shown Fig.7

Fig.4

Fig.5

Fig.6

Fig.7

Be careful on removing heavy parts.

FIGURES

OPERATING PROCEDURE

27

8-5. CONTROL BOX INSIDE LAYOUT

Power source
terminal bed

Tr ansmission terminal bed

AC reactor

Diode bridge

28

8-6. SENSOR POSITION

Liquid sensor

Liquid sensor

Liquid sensor

Gas sensor

Liquid sensor

Gas sensor

Gas sensor

Gas sensor

Liquid sensor

Gas sensor

PEFY-P40,50,63VMHS-E

PEFY-P125VMHS-E

PEFY-P71,80VMHS-E

PEFY-P140VMHS-E

PEFY-P100VMHS-E

29

www.MitsubishiElectric.com

HWE17060

New publication effective Oct. 2017

Specifications subject to change without notice