Mitsubishi PDFY-P20VM-A, PDFY-P25VM-A, PDFY-P32VM-A, PDFY-P40VM-A, PDFY-P50VM-A Service Manual

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TECHNICAL & SERVICE MANUAL

Air-Conditioners For Building Application

PDFY-P20VM-A,PDFY-P63VM-A

PDFY-P25VM-A,PDFY-P71VM-A

PDFY-P32VM-A,PDFY-P80VM-A

PDFY-P40VM-A,PDFY-P100VM-A

PDFY-P50VM-A,PDFY-P125VM-A

2001

Models

Ceiling Concealed Built-in

Series PDFY

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 the R407C & R22

- 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 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 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 al-

ways use a special circuit.

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

formed improperly, electric shoc k 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.

• When installing and moving the air conditioner to another site,

do not charge the it with a refrigerant different from the refrig-

erant (R407C or R22) 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 dam-

aged.

• 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 appropr iate 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.

• Do not reconstruct or change the settings of the protection

devices.

- 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 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 important instructions must be followed.

: Indicates a part which must be grounded.

: Indicates that caution should be taken with rotating parts. (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 con-

ditioner.

- 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 se-

curely so that the outside force of the cable is not applied to the

terminals.

This equipment may have an adverse effect equip-

ment on the same electrical supply system.

SAFETY PRECAUTIONS

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 con-

tains a large amount of chlorine which may 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 refr igerant 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 con ventional

refrigerants.

(Gauge manifold, charge hose, gas leak detector, reverse flow

check valve, refrigerant charge base, vacuum gauge, refriger-

ant 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.

PDFY-P20VM-A

PDFY-P25VM-A

PDFY-P32VM-A

PDFY-P40VM-A

PDFY-P50VM-A

PDFY-P63VM-A

PDFY-P80VM-A

PDFY-P100VM-A

PDFY-P125VM-A

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

PDFY-P71VM-A

Ceiling Concealed Built-in

Series PDFY

Models

Cooling capacity/Heating capacity

FEATURES1

Indoor unit

●

Remote

Indoor (Main) Unit

controller

● Operation buttons

[PAR-20MAA]

Once the controls are set, the same operation mode can

be repeated by simply pressing the ON/OFF button.

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

4 56879

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 measure-

ment 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.

PART NAMES AND FUNCTIONS2

Air outlet

Air inlet

● Display

ON/OFF

CENTRALLY CONTROLLED

ERROR CODE

CLOCK

ON OFF

˚C

CHECK

CHECK MODE

FILTER

TEST RUN

FUNCTION

˚C

1Hr.

NOT AVAILABLE

STAND BY

DEFROST

TEMP.

ABCD

HIKLJ

SQTU

(A) Current time/Timer

(B) Centralized control

(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

3-1. Specification

0.078

220-240 /220

50 / 60

Galvanizing

295 335

Cross fin( Alminium plate fin and copper tube)

Single phase induction motor

Synthetic fiber unwoven cloth filter( long life)

ø9.52

VP-25

Power source

Model

PDFY-P20

VM-A

PDFY-P25

VM-A

PDFY-P32

VM-A

PDFY-P40

VM-A

PDFY-P50

VM-A

Item

Dimension

Fan

Motor

Refrigerant

pipe dimension

Power cons mption

Current

Cooling capacity

Heating capacity

External finish (Munsel No.)

Net weight

Heat exchanger

Air filter

Drain pipe dimension

Noise level

(Low-Middle2-Middle1-High)

Voltage

Frequency

Cooling

Heating

Cooling

Heating

Height

Width

Depth

Type

External static pressure

Type

Output

Gas(Flare)

Liquid(Flare)

/min

dB(A)

220-240 / 220

50 / 60

3.6

4.0

0.11/0.12

0.53/0.58

Galvanizing

295

735

Cross fin( Alminium plate fin and copper tube)

30/50/100

Single phase induction motor

Synthetic fiber unwoven cloth filter( long life)

VP-25

4.5

5.0

5.6

6.3

2.2

2.5

2.8

3.2

0.11/0.12

0.53/0.58

710

Note:1

Note:2

25.5

0.075

Sirocco fan

6.0-6.5-7.5-8.5 10.0-11.0-12.5-14.0

Sirocco fan

32 34

960

Airflow rate

(Low-Middle2-Middle1-High)

Power source

Model

PDFY-P63

VM-A

PDFY-P80

VM-A

PDFY-P100

VM-A

PDFY-P125

VM-A

Item

Dimension

Fan

Motor

Refrigerant

pipe dimension

Power consumption

Current

Cooling capacity

Heating capacity

External finish (Munsel No.)

Net weight

Heat exchanger

Air filter

Drain pipe dimension

Noise level

(Low-Middle2-Middle1-High)

Voltage

Frequency

Cooling

Heating

Cooling

Heating

Height

Width

Depth

Type

External static pressure

Type

Output

Gas(Flare)

Liquid(Flare)

/min

dB(A)

11.2

12.5

0.27-0.31/0.29

1.28-1.34/1.36

0.33-0.38/0.39

1.55-1.63/1.84

14.0

16.0

7.1

8.0

0.14/0.17

0.68/0.82

9.0

10.0

0.17/0.21

0.82/1.01

PDFY-P71

VM-A

8.0

9.0

0.15/0.18

0.72/0.88

1,160

39 52

0.140 0.190

Sirocco fan

12.5-14.0-16.0-18.0

30/50/100 50/100/130

14.5-16.5-18.5-21.013.5-15.5-17.5-19.5

19.5-28.0 24.0-34.0

1,510

775735

Airflow rate

(Low-Middle2-Middle1-High)

ø15.88 ø19.05

30-34-36-39 32-36-38-4131-35-37-40 34(37)-42(44) 40(42)-45(46)

34-36-37-3928-30-33-36

0.13/0.15

0.60/0.71

0.13/0.15

0.60/0.71

ø 12.7

ø 6.35

ø 15.88

ø 9.52

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

Cooling :Indoor 27°CDB/19°CWB Heating :Indoor 20°C

:Outdoor 35°CDB :Outdoor 7°CDB/6°CWB

2.Value in ( ) indicates Noise level at the 240volt/50Hz .

SPECIFICATION3

LEV

C1 3.0µF X 440V 5.0µF X 440V

5.0µF

X 440V

8.0µF

X 440V

6.0µF X 440V

MF1,2

PDFY-P20

VM-A

PDFY-P125

VM-A

PDFY-P100

VM-A

PDFY-P80

VM-A

PDFY-P71

VM-A

PDFY-P63

VM-A

PDFY-P50

VM-A

PDFY-P40

VM-A

PDFY-P32

VM-A

PDFY-P25

VM-A

3-2. Electrical par ts specifications

Model

Parts

name

Tranrsformer T

(Primary) 240V 50Hz (Secondary) (23.5V 0.9A)

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

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

Gas pipe

thermistor

FUSE

250V 6.3A

TB2

(L,N, ) 330V 30A

TB5

TB15

(1,2),(M1,M2,S) 330V 10A

Fuse

(Indoor con-

troller board)

Power supply

terminal bed

Transmission

terminal bed

OFF 130˚C±5˚C

ON 90˚C±20˚C

OFF 150˚C±5˚C

ON 96˚C±15˚C

Room

temperature

thermistor

Fan motor

(with Inner-

thermostat)

DC12V Stepping motor drive port

dimension 5.2

Ω

(0~2000pulse)

EDM-804MD

4-pole OUTPUT 75W

D104P75MW

4-pole Output 75W

D104P85MW

4-pole

Output

78W

140W

D10C4P95MW

NC-100VM1

4-pole

Output

190W

NC-125VM1

Symbol

DC12V Stepping motor drive port

dimension 3.2

Ω

(0~2000pulse)

EDM-402MD

TH23

Inner-

thermostat

(Fan motor)

Liquid pipe

thermistor

Fan motor

capacitor

Linear

expansion valve

E 50

4-ø3.4 burringH-ø3 hole

6155

180

200

198 21

G G G G F

735

1070

168 36

PDFY-P40·50VM-A

670(Lifting bolt pitch)

670(Lifting bolt pitch) 31

When fixing the panel to indoor unit,

this dimensinon may be 50~65.

140~300

111

566(Ceiling opening)

B(Ceiling opening)

12 D(Lifting bolt pitch)

Panel (option)

870

620

1136

936

686

1160

960

710

1200

1000

750

1240

1040

790

Model

20~40

Gas pipe : LP ø12.7

Liquid pipe : HP ø6.35

Model

50~80

Gas pipe : LP ø15.88

Liquid pipe : HP ø9.52

···················································

················································

·················································

···············································

Drain hose VP-25 <flexible joint 200mm> (accessory) ··

Note:1. Use M10 screw for the lifting bolt (field supply).

GFEDCBAMODEL

PDFY-P63·71·80VM-A

PDFY-P20·25·32VM-A

600

D(Lifting bolt pitch)12 12

478

265

295

190

(❇2)

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

(❇1)

Control box

Power source

entry

Transmission

entry

Air filter

Drain hole

Water filling port

Lifting bolt hole

4-14✕22 hole

Fresh air intake ø150 knock out hole

4-ø3 Mounting hole

300mm or less

600mmMAX

172

123

126

172

Unit : mm

OUTLINES AND DIMENSIONS4

Indoor Unit

PDFY-P20·25·32·40·50·63·71·80VM-A

+ 19 hidden pages