Mitsubishi PEFY-P20VMM-E, PEFY-P25VMM-E, PEFY-P32VMM-E, PEFY-P40VMM-E, PEFY-P50VMM-E Service Manual

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TECHNICAL & SERVICE MANUAL

Air-Conditioners For Building Application

PEFY-P20VMM-E,PEFY-P71VMM-E PEFY-P25VMM-E,PEFY-P80VMM-E PEFY-P32VMM-E,PEFY-P100VMM-E PEFY-P40VMM-E,PEFY-P125VMM-E PEFY-P50VMM-E,PEFY-P140VMM-E PEFY-P63VMM-E

2004

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············8

5. WIRING DIAGRAM ·····························10

REFRIGERANT SYSTEM DIAGRAM

····12

7. TROUBLE SHOOTING························13

8. DISASSEMBLY PROCEDURE···········18

For use with R410A & R407C & R22

SAFETY PRECAUTIONS

- Inadequate connection and fastening may generate heat and cause a fire.

• Prepare for typhoons and other strong winds and earthquakes and install the unit at the specified place.

- Improper installation may cause the unit to topple and result in

injury.

• Always use an air cleaner, humidifier, electric heater, and other accessories specified by Mitsubishi Electric.

- Ask an authorized technician to install the accessories. Improper

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

• Never repair the unit. If the air conditioner must be repaired, consult the dealer.

- If the unit is repaired improperly, water leakage, electric shock, 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 air conditioner according to this Installation Manual.

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

fire may result.

• Have all electric work done by a licensed electrician according to “Electric Facility Engineering Standard” and “Interior Wire Regulations”and the instructions given in this manual and always use a separate circuit.

- If the power source capacity is inadequate or electric work is per-

formed improperly, electric shock and fire may result.

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

- If the cover and panel are not installed properly,dust or water may

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

• Keep the electric parts away from water (washing water etc.).

- It might result in electric shock, catching fire or smoke.

• When installing and moving the air conditioner to another site, do not charge it with a refrigerant differen t from the refrigerant specified on the unit.

- If a different refrigerant or air is mixed with the original refrigerant,

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

• If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit even if the refrigerant should leak.

- Consult the dealer regarding the appropriate measures to pre-

vent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due 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.

• To dispose of this product, consult your dealer.

• Do not use a leak detection additive.

• Do

devices.

not reconstruct or change the settings of the protection

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

is shorted and operated forcibly, or parts other than those specified by Mitsubishi Electric are used, fire or explosion may result.

1. Before installation and electric work

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

“Safety precautions”.

s The “Safety precautions” provide very important

points regarding safety. Make sure you follow them.

s This equipment may not be applicable to EN61000-3-

2: 1995 and EN61000-3-3: 1995.

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 precautions that should be observed to prevent damage to the unit.

Symbols used in the illustrations

: Indicates an action that must be avoided.

: Indicates that impor tant instructions must be followed.

: Indicates a part which must be grounded.

: Indicates that caution should be taken with rotating par ts. (This

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

: Beware of electric shock (This symbol is displayed on the main

unit label.) <Color: Yellow>

Warning:

Carefully read the labels affixed to the main unit.

Warning:

• Ask the dealer or an authorized technician to install the air conditioner.

- Improper installation by the user may result in water leakage, elec-

tric shock, or fire.

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

- Inadequate strength may cause the unit to fall down, resulting in

injuries.

• Use the specified cables for wiring. Make the connections securely so that the outside force of the cable is not applied to the terminals.

2. Precautions for devices that use R410A or 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 may cause the refrigerator oil of the new unit to deteriorate.

• Use refrigerant piping made of phosphorus per.

deoxidized cop-

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,

minant.

oils, moisture, or any other conta-

- Contaminants on the inside of the refrigerant piping may cause the refrigerant residual oil to deteriorate.

• 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 R410A or 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 back 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

R410A or R407C, the refrigerant may deteriorated.

- If

deteriorate.

water is mixed in the R410A or R407C, the refrigerator oil may

- Since R410A or 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.

PEFY-P20VMM-E

PEFY-P25VMM-E

PEFY-P32VMM-E

PEFY-P40VMM-E

PEFY-P50VMM-E

PEFY-P63VMM-E

PEFY-P71VMM-E

PEFY-P80VMM-E

PEFY-P100VMM-E

PEFY-P125VMM-E

PEFY-P140VMM-E

2.2/ 2.5

2.8/ 3.2

3.6/ 4.0

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

Indoor unit

Ceiling Concealed

Series PEFY

Models

Cooling capacity/Heating capacity

PART NAMES AND FUNCTIONS

● Indoor (Main) Unit

● Remote controller

● Operation buttons

[PAR-20MAA]

●

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

456879

Air inlet

Air outlet

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

Air inlet

Air outlet

[In case of rear inlet]

[In case of bottom inlet]

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 sensor

•

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

repeated by simply pressing the ON/OFF button.

Never expose the remote controller to direct sunlight. Doing so can result in the erroneous measurement of room temperature. Never replace any obstacle around the lower right-hand section of the remote controller. Doing so can result in the erroneous measurement of room temperature.

● Display

(A) Current time/Timer (B) Centralized control (C) Timer ON (D) Abnormality occurs (E) Operation mode: COOL, DRY, AU TO, 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

STAND BY DEFROST

ABCD

CENTRALLY CONTROLLED

CHECK

TEMP.

˚C

ON OFF

CLOCK

ERROR CODE

HIKLJ

1Hr.

NOT AVAILABLE

SQTU

˚C

CHECK MODE

ON/OFF

FILTER

TEST RUN FUNCTION

R P

O N M

SPECIFICATION

3-1. Specification

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

Cooling :Indoor 27°CDB/19.0°CWB Heating

:Indoor 20°C

:Outdoor 35

°CDB :Outdoor 7°CDB/6°CWB

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

0.078

220-240

Galvanized steel plate

325

740

Cross fin( Alminium plate fin and copper tube)

Single phase induction motor

P.P. honeycomb

ø9.52

R1(External thread)

Power source

Model

PEFY-P20

VMM-E

PEFY-P25

VMM-E

PEFY-P32

VMM-E

PEFY-P40

VMM-E

PEFY-P50

VMM-E

Item

Dimension

Fan

Motor

Refrigerant

pipe dimension

Power consumption

Current

Cooling capacity Heating capacity

External finish

Net weight

Heat exchanger

Air filter

Drain pipe dimension

Noise level

(Low-[Middle]-High)

Voltage

Frequency

Cooling Heating Cooling Heating

Height

Width Depth

Type

External static pressure

Type

Output

Gas(Flare)

Liquid(Flare)

Hz kW kW kW kW

A A

mm mm mm

m3/min

220-240

3.6

4.0

0.17

0.81

Galvanized steel plate

295

700

Cross fin( Alminium plate fin and copper tube)

7.5-9.0-10.5

30/50/100

Single phase induction motor

0.075

R1(External thread)

4.5

5.0

5.6

6.3

2.2

2.5

2.8

3.2

0.15

0.73

815

Note:1 Note:1

Note:2

Sirocco fan ✕

6.0-7.2-8.5 10.0-12.0-14.0 12.0-14.5-17.0

Sirocco fan ✕

295

700

935

Airflow rate

(Low-[Middle]-High)

Power source

Model

PEFY-P71

VMM-E

PEFY-P63

VMM-E

PEFY-P80

VMM-E

PEFY-P100

VMM-E

PEFY-P125

VMM-E

Item

Dimension

Fan

Motor

Refrigerant

pipe dimension

Power consumption

Current

Cooling capacity Heating capacity

External finish

Net weight

Heat exchanger

Air filter

Drain pipe dimension

Noise level

(Low-[Middle]-High)

Voltage

Frequency

Cooling Heating Cooling Heating

Height

Width Depth

Type

External static pressure

Type

Output

Gas(Flare)

Liquid(Flare)

Hz kW kW kW kW

A A

mm mm mm

m3/min

mm mm

11.2

12.5

0.29

1.34

14.0

16.0

0.40

1.90

8.0

9.0

0.25

7.1

8.0

0.22

1.07

9.0

10.0

0.25

1.15

1,175

0.200

Sirocco fan ✕

14.5-18.0-21.0

13.5-16.2-19.0

28.0-40.0

23.0-33.0

30/50/100 50/130

62 65

1,415 1,715

ø15.88 ø15.88(R410A), ø19.05(R22,R407C)

32-36-39

31-35-38

40-44 42-45

PEFY-P140

VMM-E

16.0

18.0

0.42

1.95

0.280

29.5-42.0

31-34-37 31-35-3828-32-3527-30-32

0.19

0.92

0.20

0.98

ø12.7

ø6.35

ø15.88

ø9.52

Airflow rate

(Low-[Middle]-High)

P.P. honeycomb

12.7(R410A)

15.88(R22,R407C)

6.35(R410A)

9.52(R22,R407C)

3-2. Electrical parts specifications

Model

Parts

name

Transformer T (Primary) 50/60Hz 220-240V (Secondry) (18.4V 1.7A)

Room temperature ther mistor

Liquid pipe ther mistor

Gas pipe ther mistor

Fuse

(Indoor con -

troller board)

Fan motor

(with Inner-

ther mostat)

Innerthermostat

(Fan motor)

Symbol

MF1,2

PEFY-P20

VMM-E

TH21 Resistance 0˚C/15k

TH22 Resistance 0˚C/15k

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

FUSE 250V 6.3A

PEFY-P25

VMM-E

4-pole Output 75W

D104P75MW

PEFY-P32

VMM-E

PEFY-P40

VMM-E

PEFY-P50

VMM-E

PEFY-P63

VMM-E

PEFY-P71

VMM-E

PEFY-P80

VMM-E

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

4-pole

Output 75W

D104P85MW

OFF 130˚C ± 5

ON 90˚C ± 20

4-pole Output 78W

D10CP95MW

PEFY-P100

NS-100VM-1

VMM-E

4-pole

Output

200W

PEFY-P125

VMM-E

4-pole

Output

280W

NS-125VM-1

PEFY-P140

VMM-E

an motor

F capacitor

Linear expansion valve

Power supply terminal bed

Transmission terminal bed

LEV

TB2 (L,N, ) 330V 30A

TB5

TB15

DC12V Stepping motor drive port

dimension ø3.2 (0~2000pulse)

6.0µF X 440V X 1pcs

(M1,M2,S) (1,2)

300V 10A

8.0µF X 440V X 1pcs

DC12V Stepping motor drive

port dimension ø 5.2

16µF X 440V X 2pcs

Stepping motor drive

~2000pulse)

por t dimension ø6.4

DC12V

(0~2000pulse)

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