Mitsubishi PEFY-P40VMH-A, PEFY-P50VMH-A, PEFY-P63VMH-A, PEFY-P71VMH-A, PEFY-P80VMH-A Service Manual

TECHNICAL & SERVICE MANUAL

Air-Conditioners For Building Application

<Indoor unit>

PEFY-P40VMH-A,PEFY-P100VMH-A
PEFY-P50VMH-A,PEFY-P125VMH-A
PEFY-P63VMH-A,PEFY-P140VMH-A
PEFY-P71VMH-A,PEFY-P200VMH-A
PEFY-P80VMH-A,PEFY-P250VMH-A

2001

Models

INDOOR UNIT

Ceiling Concealed

Series PEFY

CONTENTS

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

1. FEATURES············································3

2. PART NAMES AND FUNCTIONS········4

3. SPECIFICATION ···································6

4. OUTLINES AND DIMENSIONS············9

5.WIRING DIAGRAM ·····························11

6.

REFRIGERANT SYSTEM DIAGRAM

····13

7.TROUBLE SHOOTING························14

8. DISASSEMBLY PROCEDURE···········17

1

SAFETY PRECAUTIONS

and install the unit at the specified place.

- Improper in stal lati on may cause th e unit to to pple and re sult in
injury.

• Always use an air c leaner, humidi fie r, electric hea ter, and other
accessories specified by Mitsubishi Electric.

- Ask an authorized technician to install the accessories. Improper

installati on by th e user may re sult in water leakag e, el ectric shoc k,
or fire.

• Never repair the uni t. If the air con dit ion er must be rep air ed,
consult the dealer.

- If the unit is repaired improperly, water leakage , electric shoc k, or

fire may result.

• Do not touch the heat exchanger fins.

- Improper handling may result in injury.

• If refrigerant gas leaks during installation work, ventilate the
room.

- If the refrigerant gas comes into contact with a flame, poisonous

gases will be released.

• Install the ai r cond itio ner ac cor ding to th is In stalla tion Man ual.

- If the unit is installed improperly, water leakage , electric shoc k, or

fire may result.

• Have all electr ic w ork don e b y a lic ensed ele ctrici an accor din g
to “Electric Facility Engineering Standard” and “Interior Wire
Regulations”and the instructions given in this manual and al­ways use a special circuit.

- If the power source capacity is inadequa te or ele ctric work is per-

formed improperly, electric shock and fire may result.

• Securely install the cover of control box and the panel.

- If the cov er and pan el are not ins tal led pro perly,dust or w ate r may

enter the outdoor unit and fire or electric shock may result.

• When installi ng an d mo ving the air co ndit ione r to anot her si te,
do not charge the it with a refrigerant differen t fr om the refr ig­erant (R22) specified on the unit.

- If a different refriger ant or air is mixed wit h the original refriger ant,

the refrigerant cycle may malfunction and the unit may be dam­aged.

• If the air conditioner is installed in a small room, measures
must be take n to pr event th e re fr ig er ant co ncen tr at ion from
exceeding the safety limit even if the refrigerant should leak.

- Consult the de aler rega rdin g the ap propr ia te me asures to pre-

vent the safety limit from being exceeded. Should the refrigerant
leak and cause th e safety limi t to be exceed ed, ha za rds du e to
lack of oxygen in the room could result.

• When moving and reinstalling the air conditioner, consult the
dealer or an authorized technician.

- If the air conditioner is installed improperly, water leakage, elec-

tric shock, or fire may result.

• After completing installation work, make sure that refrigerant
gas is not leaking.

- If the refrigerant gas leaks and is exposed to a fan heater, stove,

oven, or other heat source, it may generate noxious gases.

• Do not re cons tr uc t or chan g e th e se ttin gs of the prote ct ion
devices.

- If the pressure switch, thermal switch, or other protection device

is shorted an d op erat ed f orci bly, or parts ot her th an th ose spec ified
by Mitsubishi Electric are used, fire or explosion may result.

1. Befor e instal lati on and elec tric work

s Before installing the unit, make sure you read all the

“Safety precautions”.

s The “Safety precautions” provide ver y important

points regarding safety. Make sure you follow them.

s This equipment may cause the adverse effect on the

same supply system.

s Please report to or take consent by the supply au-

thority before connection to the system.

Symbols used in the text

Warning:

Describes precautions that should be observed to prevent danger
of injury or death to the user.

Caution:

Describes pr ecau tion s that shou ld be obse rved to pre vent dama ge
to the unit.

Symbols used in the illustrations

: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
: Indicates tha t cau tion should be taken wit h rot ati ng parts. (This

symbol is displayed on the main unit label.) <Color: Yellow>

: Beware of electric shock (This sym bol is dis played on the main

unit label.) <Color: Yellow>

Warning:

Carefully read the labels affixed to the main unit.

Warning:

• Ask the dealer or an authorized tec hni cian to ins tall the air con­ditioner.

- Improper installatio n b y the use r ma y res ult in water leak age , elec -

tric shock, or fire.

• Install the air unit at a place that can withstand its weight.

- Inadequate str eng th may cause the uni t to fall down, res ult ing in

injuries.

• Use the specified cables for wiring. Make the connections se­curely so th at th e ou tsid e f or ce of th e ca ble is no t ap plie d to the
terminals.

- Inadequa te co nnec tion and f as teni ng ma y ge nera te he at an d caus e

a fire.

• Prepare for typhoons and other strong winds and earthquakes

2

2. Precautions for devices that use
R407C refrigerant

Caution:

• Do not use the existing refrigerant piping.

- The old refrigerant and refrigerator oil in the existing piping con­tains a large amount of chlorine which ma y cause the refrigerator
oil of the new unit to deteriorate.

• Use refrigerant piping made of C1220 (CU-DHP) phosphorus
deoxidized copper as specified in the *JIS H3300 “Copper and
copper alloy seamless pipes and tubes”. In addition, be sure
that the inner and outer surfaces of the pipes are clean and
free of hazardous sulphur, oxides, dust/dirt, shaving particles,
oils, moisture, or any other contaminant.

- Contaminants on the inside of the refrigerant piping may cause

the refrigerant residual oil to deteriorate.

*JIS: Japanese Industrial Standard

• Store the piping to be used during installation indoors and keep
both ends of the piping 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.

• Use ester oil, ether oil or alkylbenzene (small amount) as the
refrigerator oil to coat flares and flange connections.

- The refrigerator oil will degrade if it is mixed with a large amount of

mineral oil.

• Use liquid refrigerant to fill 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 refrig-

erant may cause the refrigerator oil to deteriorate.

• Use a vacuum pump with a reverse flow check valve..

- The vacuum pump oil may flow bac k into the refrigerant cycle and

cause the refrigerator oil to deteriorate.

• Do not use the following tools that are used with conventional
refrigerants.
(Gauge manifold, charge hose, gas leak detector, reverse flow
check valve, refrigerant charge base, vacuum gauge, refriger­ant recovery equipment)

- If the conventional refrigerant and refrigerator oil are mixed in the

R407C, the refrigerant may deteriorated.

- If water is mixed in the R407C, the refrigerator oil ma y deteriorate.

- Since R407C does not contain any chlorine, gas leak detectors

for conventional refrigerants will not react to it.

• Do not use a charging cylinder.

- Using a charging cylinder may cause the refrigerant to deteriorate.

• Be especially careful when managing the tools.

- If dust, dirt, or water gets in the refrigerant cycle, the refrigerant

may deteriorate.

3

PEFY-P40VMH-A
PEFY-P50VMH-A
PEFY-P63VMH-A
PEFY-P71VMH-A
PEFY-P80VMH-A
PEFY-P100VMH-A
PEFY-P125VMH-A
PEFY-P140VMH-A
PEFY-P200VMH-A
PEFY-P250VMH-A

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

22.4/25.0

28.0/31.5

FEATURES

1

Indoor unit

Ceiling Concealed

Series PEFY

Models

Cooling capacity/Heating capacity

kW

4

PART NAMES AND FUNCTIONS

2

● Indoor (Main) Unit

● Remote controller

● Operation buttons

[PAR-20MAA]

● Once the controls are set, the same operation mode can

be repeated by simply pressing the ON/OFF button.

Air inlet

Air outlet

PAR-20MAA

ON/OFF

CENTRALLY CONTROLLED

ERROR CODE

CLOCK

ON OFF

˚C

CHECK

CHECK MODE

FILTER

TEST RUN
FUNCTION

˚C

1Hr.

NOT AVAILABLE

STAND BY
DEFROST

FILTER

CHECK TEST

TEMP.

TIMER SET

1

2

3

4 56879

0

C

A

B

1 [Room temperature adjustment] Button
2 [Timer/continuous] Button
3 [Selecting operation] Button
4 [Time selection] Button

[Time-setting] Button

5 [Louver] Button
6 [Fan speed adjustment] Button

7 [Up/down airflow direction] Button
8 [Ventilation] Button
9 [Checking/built-in] Button
0 [Test run] Button
A [Filter] Button
B [ON/OFF] Button
C Position of built-in room temperature

•Never expose the remote controller to direct sunlight. Doing so can result in the erroneous measure­ment of room temperature.

•Never place any obstacle around the lower right-hand section of the remote controller.Doing so can
result in the erroneous measurement of room temperature.

5

● Display

(A) Current time/Timer
(B) Centralized control
(C) Timer ON
(D) Abnormality occurs
(E) Operation mode: COOL, DRY, AUTO, FAN, HEAT
(F) Preparing for Heating mode
(G) Defrost mode
(H) Set temperature
(I) Power ON
(J) Louver
(K) Not available function
(L) Ventilation
(M) Function setting mode
(N) Test run mode
(O) Error check mode
(P) Filter sign
(Q) Set effective for 1 hr.
(R) Sensor position
(S) Room temperature
(T) Airflow
(U) Fan speed

ABCD

SQTU

E

F

STAND BY
DEFROST

G

CENTRALLY CONTROLLED

CHECK

˚C

ON OFF

CLOCK

ERROR CODE

TEMP.

HIKLJ

1Hr.

NOT AVAILABLE

˚C

ON/OFF

FILTER

CHECK MODE

TEST RUN
FUNCTION

R
P

O
N
M

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
Pa

50/100/200

100/150/200

220V

230, 240V

kW

mm

mm

dB(A)
dB(A)

27-34
31-37

32-38
36-41

32-39
35-41

Heating capacity ❇1
Power consumption

(50/60Hz)
Current
External finish

Dimension

Height

Width

Depth
Net weight
Heat exchanger

Fan

Type
Airflow rate

(Lo-Hi)
External static

pressure ❇2

Motor

Output ❇3

Type

Air filter (option)

Refrigerant
pipe dimension

Gas

(Flare)

Liquid

(Flare)
Drain pipe dimension
Noise level (Lo-Hi)

220V

230, 240V

~

750 1000

44

Cross fin (Aluminum plate fin and copper tube)

Sirocco fan

✕

Single phase induction motor

Synthethic fiber unwoven cloth filter(long life)

10.0-14.0

220-240V 50Hz /60Hz

PEFY-P40VMH-A PEFY-P50VMH-A

5.64.5

6.35.0

Galvanizing

380

900

1

12.7

6.35
32 (1-1/4 inch)

0.08

0.19/0.23

0.19/0.23

0.88/1.06

0.88/1.06

0.24/0.30

0.24/0.30

1.12/1.38

1.12/1.38

0.26/0.33

0.26/0.33

1.20/1.51

1.20/1.51

45 50

ø

ø

9.52

ø

PEFY-P63VMH-A

7.1

8.0

ø

15.88

13.5-19.0

0.12 0.14

PEFY-P71VMH-A

8.0

9.0

15.5-22.0

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 100Pa (at 220V) /150Pa (at 230, 240V) at factory shipment.

❇

3 The value are that at 240V.

6

7

Power source

kWCooling capacity ❇1
kW

kWCooling
Heating
Cooling
Heating

kW

A
A

mm

mm

mm

kg

m

3

/min

Pa
Pa

50/100/200

100/150/200

220V

230, 240V

kW

mm

mm

dB(A)
dB(A)

35-41
38-43

34-42
38-44

Heating capacity ❇1
Power consumption

(50/60Hz)
Current
External finish

Dimension

Height

Width

Depth
Net weight
Heat exchanger

Fan

Type
Airflow rate

(Lo-Hi)
External static

pressure ❇2

Motor

Output ❇3

Type

Air filter (option)

Refrigerant
pipe dimension

Gas

(Flare)

Liquid

(Flare)
Drain pipe dimension
Noise level (Lo-Hi)

220V

230, 240V

~

1000 1200

50

Cross fin (Aluminum plate fin and copper tube)

Sirocco fan

✕

Single phase induction motor

Synthethic fiber unwoven cloth filter(long life)

18.0-25.0

220-240V 50Hz /60Hz

PEFY-P80VMH-A

PEFY-P100VMH-A

11.29.0

12.510.0

Galvanizing

380

900

1 Sirocco fan✕2

15.88

32 (1-1/4 inch)

0.18

0.48/0.58

0.48/0.58

2.34/2.66

2.34/2.66

0.48/0.59

0.48/0.59

2.35/2.70

2.35/2.70

0.32/0.40

0.32/0.40

1.47/1.83

1.47/1.83

70

ø

9.52

ø

PEFY-P125VMH-A

14.0

16.0

ø

19.05

26.5-38.0

0.26

PEFY-P140VMH-A

16.0

18.0

28.0-40.0

PEFY-P200VMH-A

~

380-415V 50Hz / 60Hz

PEFY-P250VMH-A

22.4 28.0

25.0 31.5

Power source

kWCooling capacity ❇1
kW

kWCooling
Heating
Cooling
Heating

kW

A
A

mm
mm
mm

kg

m

3

/min

Pa
Pa

kW

mm

mm

dB(A)
dB(A)

Heating capacity ❇1
Power consumption

(50/60Hz)
Current
External finish

Dimension

Height

Width

Depth

380V

400, 415V

380V

400, 415V

Net weight
Heat exchanger

Fan

Type
Airflow rate
External static

pressure

❇

4

Motor

Output ❇5

Type

Air filter (option)

Refrigerant
pipe dimension

Gas

(Brazing)

Liquid

(Brazing)

Drain pipe dimension
Noise level

Galvanizing

470

1250

1120

100

Cross fin (Aluminum plate fin and copper tube)

Sirocco fan✕2

phase induction motor

Synthethic fiber unwoven cloth filter(long life)

ø

28.58

ø

25.4

ø

12.7

32 (1-1/4 inch)

58.0 72.0
110/220
130/260

0.76 1.08

52(130Pa)/54(260Pa)

50(110Pa)/52(220Pa)

44(130Pa)/47(260Pa)

42(110Pa)/45(220Pa)

0.99/1.14

0.99/1.14

1.62/1.86

1.62/1.86

1.23/1.41

1.23/1.41

2.0/2.3

2.0/2.3

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 100Pa (at 220V) /150Pa (at 230, 240V) at factory shipment.

❇

3 The value are that at 240V.

❇

4 The external static pressure is set to 110Pa (at 380V) /130Pa (at 400, 415V) at factory shipment.

❇

5 The value are that at 415V.

3N

Model

Model

8

LEV

C1

MF1,2

P

EFY-

P40VMH-A

3-2. Electrical par ts specifications

Model

Parts

name

Tranrsformer T (Primary) 50/60Hz 220-240V (Secondry) (23.5V 0.9A)

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

TH22 Resistance 0˚C/15kW,10˚C/9.6kW,20˚C/6.3kW,25˚C/5.4kW,30˚C/4.3kW,40˚C/3.0kW

Gas pipe
thermistor

FUSE 250V 6.3A

TB2 (L,N, ) 330V 30A

TB5
TB15

(1,2),(M1,M2,S) 300V 10A

Fuse

(Indoor con-

troller board)

Power supply
terminal bed

Transmission
terminal bed

P

EFY-

P50VMH-A

P

EFY-

P63VMH-A

P

EFY-

P71VMH-A

P

EFY-

P80VMH-A

P

EFY-

P100VMH-A

P

EFY-

P125VMH-A

P

EFY-

P140VMH-A

P

EFY-

P200VMH-A

P

EFY-

P250VMH-A

OFF 135˚C±5˚C

ON 95˚C±20˚C

Room
temperature
thermistor

Fan motor

(with Inner-

thermostat)

4-pole OUTPUT

130W

NC-45VMH

4-pole

Output

180W

NC-71VMH

Symbol

DC12V Stepping motor drive

port dimension ø3.2(0~2000pulse

)

EDM-402MD

DC12V Stepping motor drive

port dimension ø5.2(0~2000pulse)

EDM-804MD

DC12V Stepping motor drive

port dimension ø5.2(0~2000pulse)

EDM-804MD✕2

(L1,L2,L3,N, )

660V 40A

DC12V Stepping motor

drive port dimension

ø6.4(0~2000pulse)

EDM-1004MD

TH23 Resistance 0˚C/15kW,10˚C/9.6kW,20˚C/6.3kW,25˚C/5.4kW,30˚C/4.3kW,40˚C/3.0kW

Inner­thermostat

(Fan motor)

Liquid pipe
thermistor

Fan motor
capacitor

Linear
expansion valve

4-pole

Output

220W

NC-80VMH

4-pole

Output

230W

NC-90VMH

4-pole

Output

550W

NS-200VMH

4-pole

Output

800W

NS-250VMH

4-pole OUTPUT 400W

NS-112VMH

3.0µF✕440V

4.0µF

✕440V

5.0µF✕440V

-

7.0µF✕440V

9

4

OUTLINES AND DIMENSIONS

Indoor Unit PEFY-P40·50· 63·71·80·100· 125·140VMH-A

Unit : mm

Higher than 20mm

625

Note 2

Higher than 20mm

L

50

50

450

450

150~200

700

Reguired space for service and maintenance

100~200

J-ø3

Access door

E

A

50x(J-1)=K

Air outlet

3

Lower than 300mm

Ceiling surface

Access door

Make the access door at the appointed position

properly for service maintenance.

250

B (Lifting bolt pitch)

50

23

80

50

15

60

Lower than 550mm

1250 1204 1130 1050 1000 25 21 1000 19 900 1230 ø19.05 ø9.52

-P100·125·140VMH-A

PEFY-P40VMH-A 800 754 680 600 550 50 11 500 10 450 780 ø12.7 ø6.35

PEFY-P50·63VMH-A 800 754 680 600 550 50 11 500 10 450 780 ø15.88 ø9.52

PEFY-P71·80VMH-A 1050 1004 930 850 800 25 17 800 15 700 1030 ø15.88 ø9.52

PEFY

Model A B C D E F G H J K L M N

Note1.Use M10 screw for the lifting bolt (field supply).

2.Keep the service space for the maintenance from the bottom when the heat exchanger is cleaned.

3.This chart indicates for PEFY-P100·125·140 models, which has 2 fans.

PEFY-P40·50·63·71·80 models have 1 fan.

4.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.

When installing the drain water lifting-up mech(option).

380

250

94

328

15

29

50505050

130 77

25

41

123

Refrigerant piping flare connection(gas M copper tube):HP··············

Refrigerant piping flare connection(liquid N copper tube):LP············

Drain hose 32mm(1-1/4inch) <flexible joint 200mm> (accessory)·····

G-ø3

C

D

Air inlet
50x(G-1)=H

50

1

Terminal bed

45

17

30

20092

343

387

Drain hole

Terminal bed

(Transmission)

Terminal box

(Power source)

Keep duct-work length 850mm or more.

847

24

Drain hole

10

2

(option)

Control box

340

50x5=250

3

900

904

814 (Lifting bolt pitch)

383

10

F

41

70

Lifting bolt

340

Model:40-80(Note 3)