Mitsubishi PLFY-P20VLMD-E, PLFY-P25VLMD-E, PLFY-P32VLMD-E, PLFY-P40VLMD-E, PLFY-P50VLMD-E Service Manual

...

TECHNICAL & SERVICE MANUAL

Air-Conditioners For Building Application

2004

Models

Ceiling Cassettes

Series PLFY

For use with the R410A & R407C & R22

PLFY-P20VLMD-E,PLFY-P63VLMD-E PLFY-P25VLMD-E,PLFY-P80VLMD-E PLFY-P32VLMD-E,PLFY-P100VLMD-E PLFY-P40VLMD-E,PLFY-P125VLMD-E PLFY-P50VLMD-E

INDOOR UNIT

CONTENTS

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

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

2. PART NAMES AND FUNCTIONS········4

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

4. OUTLINES AND DIMENSIONS············8

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

REFRIGERANT SYSTEM DIAGRAM

13····

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

8. DISASSEMBLY PROCEDURE···········

SAFETY PRECAUTIONS

1. Before installation and electric work

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

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

• To dispose of this product, consult your dealer.

• Do not use a leak detection additive.

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 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.

• 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 special circuit.

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

formed improperly, electric shock and fire may result.

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 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 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.

- 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.

• 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 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.

• 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.

2. Precautions for devices that use

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 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 refrig

- 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

• 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.

R410A or R407C refrigerant

erant other than R410A or R407C.

R410A or R407C, the refrigerant may deteriorated.

- If deteriorate.

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

- Since R410A or R4 07C does not contain any chlorine, gas leak detectors for conventional refrigerants will not react to it.

PLFY-P20VLMD-E

PLFY-P25VLMD-E

PLFY-P32VLMD-E

PLFY-P40VLMD-E

PLFY-P50VLMD-E

PLFY-P63VLMD-E

2.2 / 2.5

2.8 / 3.2

3.6 / 4.0

4.5 / 5.0

5.6 / 6.3

PLFY-P80VLMD-E

9.0 / 10.0

PLFY-P100VLMD-E

11.2 / 12.5

PLFY-P125VLMD-E

14.0 / 16.0

7.1 / 8.0

FEATURES

Indoor unit

Ceiling Cassettes

Series PLFY

Models

Cooling capacity/Heating capacity

PART NAMES AND FUNCTIONS

● Indoor (Main) Unit

Air inlet

Sucks the ambient air in.

Long-life filter

Removes the sucked-in dust and dirt. Since the long-life filter is used as an air filter, it should be cleaned at the beginning of air-cooling and heating seasons. (During seasons with large amounts of dust and dirt, more frequent cleaning are recommended.)

Autovane

Disperses the airflow up and down and adjusts the angle of the airflow.

● 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.

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 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.

[Display]

Current time/Timer

Centralized control

Timer ON

Abnormality occurs

Operation mode: COOL, DRY, AUTO, FAN, HEAT

Preparing for Heating mode

Defrost mode

Set temperature

Power ON

Louver

Not available function

Ventilation

Function setting mode

Test run mode

Error check mode

Filter sign

Set effective for 1 hr.

Sensor position

Room temperature

Airflow

Fan speed

ABCD

SQTU

CENTRALLY CONTROLLED

STAND BY DEFROST

CHECK

TEMP.

HIKLJ

˚C

ON OFF

CLOCK

ERROR CODE

1Hr.

NOT AVAILABLE

˚C

FILTER

CHECK MODE

TEST RUN FUNCTION

ON/OFF

R P

O N M

SPECIFICATION

3-1. Specification

Note:

❇

3 The figure in < > indicates panel's

❇

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

Cooling : Indoor 27˚CDB/19˚CWB,Outdoor 35˚CDB Heating : Indoor 20˚CDB,Outdoor 7˚CDB/6˚CWB

❇

2 Cooling capacity indicates the maximum value at operation under the following condition.

Cooling : Indoor 27˚CDB/19.5˚CWB,Outdoor 35˚CDB (WR2: water 30˚C)

❇

4 It is measured in anechoic room.

PLFY-P20VLMD-E PLFY-P25VLMD-E PLFY-P32VLMD-E PLFY-P40VLMD-E

~ 220-240V 50Hz / ~ 220-230V 60Hz

Power source

kcal/h

Cooling capacity

❇

kWCooling Heating Cooling Heating

A A

mm mm mm

/min

mm mm

dB(A) dB(A)

Heating capacity

Powe r consumption

Current

External finish(Munsel No.)

Dimension ❇3

Height Width Depth

Net weight Heat exchanger

Fan

Type

External static pressure

Motor

Output

Type

Air filter Refrigerant

pipe dimension

Gas(Flare)

Liquid(Flare)

Drain pipe dimension

Unit: Galvanizing Decoration Panel: ABS (0.7Y 8.59/0.97) Service Panel: Galvanizing (0.7Y 8.59/0.97)

290 <20>

776 <1080>

634 <710>

23 <6.5>

Cross fin

Turbo fan✕1

Single phase induction motor

PP honeycomb fabric (long life filter)

ø 12.7

ø 6.35

Unit drain pipe I.D.32 (1-1/4inch)

6.5-8.0-9.5 7.0-8.5-10.5 0

0.015

24 <6.5>

Airflow rate (Lo-Mid-Hi)

Noise level (Lo-Mid-Hi) ❇4

220V,240V

230V

2.2

2,000

2.5

0.072 / 0.075

0.065 / 0.069

0.36 / 0.37

0.30 / 0.32

2.8

2,500

3.2

0.072 / 0.075

0.065 / 0.069

0.36 / 0.37

0.30 / 0.32

3.6

3,150

4.0

0.072 / 0.075

0.065 / 0.069

0.36 / 0.37

0.30 / 0.32

4.5

4,000

5.0

0.081 / 0.085

0.074 / 0.079

0.40 / 0.42

0.34 / 0.37

27-30-33 28-31-34 30-34-37

PLFY-P63VLMD-E PLFY-P80VLMD-E

PLFY-P100VLMD-E PLFY-P125VLMD-E

~ 220-240V 50Hz / ~ 220-230V 60Hz

Power source

kcal/h

Cooling capacity

❇

kWCooling Heating Cooling Heating

A A

mm mm mm

/min

dB(A) dB(A)

Heating capacity

Powe r consumption

Current

External finish(Munsel No.)

Dimension ❇3

Height Width Depth

Net weight

Heat exchanger

Fan

Type

External static pressure

Motor

Output

Type

Air filter

Refrigerant pipe dimension

Gas(Flare)

Liquid(Flare)

Drain pipe dimension

Unit: Galvanizing Decoration Panel: ABS (0.7Y 8.59/0.97) Service Panel: Galvanizing (0.7Y 8.59/0.97)

634 <710>

290 <20>

1446 <1750> 1708 <2010>

606 <710>

28 <7.5> 44 <12.5> 47 <12.5> 56 <13.0>

Cross fin

Turbo fan✕1 Turbo fan✕2 Sirocco fan✕4

Single phase induction motor

Synthetic fiber unwoven

cloth filter (long life)

15.88

9.52

Unit drain pipe I.D.32 (1-1/4inch)

10.0-13.0-15.5

24.0-27.0-30.0-33.0 (Lo-Mid2-Mid1-Hi)

17.5-21.0-25.015.5-18.5-22.0

0.020 0.020 (at 240V) 0.030 (at 240V) 0.078✕2(at 240V)

Airflow rate (Lo-Mid-Hi)

Noise level (Lo-Mid-Hi) ❇4

220V,240V

230V

7.1

6,300

8.0

0.101 / 0.105

0.094 / 0.099

0.49 / 0.51

0.43 / 0.46

9.0

8,000

10.0

0.147 / 0.156

0.140 / 0.150

0.72 / 0.74

0.66 / 0.69

11.2

10,000

12.5

0.157 / 0.186

0.150 / 0.180

0.75 / 0.88

0.69 / 0.83

14.0

12,500

16.0

0.28 / 0.28

0.27 / 0.27

1.35 / 1.35

1.33 / 1.33

33-36-39

34-37-40

PLFY-P50VLMD-E

946 <1250>

27 <7.5>

PP honeycomb fabric (long life filter)

9.0-11.0-12.5

5.6

5,000

6.3

0.082 / 0.086

0.075 / 0.080

0.41 / 0.43

0.35 / 0.38

31-34-37 32-35-38

32-37-39 33-38-40 37-41-43

40-42-44-46

(Lo-Mid2-Mid1-Hi)

ø 15.88 (R410A)

ø 19.05 (R22,R407C)

29-33-36

ø 12.7 (R410A)

ø 15.88 (R22,R407C)

ø 6.35 (R410A)

ø 9.52 (R22,R407C)

36-39-42

1.7µF

x 440V

1.5µF

x 440V

2.2µF

x 440V

1.5µF

x 440V

2.0µF

x 440V

5.0µF

x 440V

LEV

1.3µF x 440V

MF1

PLFY-P20

VLMD-E

PLFY-P25

VLMD-E

PLFY-P32

VLMD-E

PLFY-P40

VLMD-E

PLFY-P50

VLMD-E

PLFY-P63

VLMD-E

3-2. Electrical parts specifications

Model

Parts

name

Tranrsformer T

(Primary) 220-240V 50Hz, 220-230V 60Hz (Secondry) 23.2V 1.1A

(Primary)

50/60Hz

220-240V

(Secondry)

18.4V 1.7A

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

TH21

TH22

Gas pipe thermistor

F901 250V 6.3A

Drain sensor DS

TB2

TB5

TB15

Fuse

(Indoor

controller board)

Power supply terminal bed

Transmission terminal bed

PLFY-P80

VLMD-E

PLFY-P100

VLMD-E

PLFY-P125

VLMD-E

OFF 145±8°C ON 88±15°C

DC12V Stepping motor

INPUT 6.4/5.5W

400cm

/min

INPUT 8/7.5W

400cm

/min

Resistance 0°C/6.0kΩ, 10°C/3.9kΩ, 20°C/2.6kΩ,25°C/2.2kΩ, 30°C/1.8kΩ, 40°C/1.3kΩ

DC12V Stepping motor drive port dimension ø 3.2 (0~2000pulse)

(L,N, ) 330V 30A

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

Room temperature thermistor

Fan motor

(with Inner-

thermostat)

6-pole

OUTPUT 15W

6-pole

OUTPUT

30W

4-pole

OUTPUT

78W

6-pole

OUTPUT 20W

Symbol

TH23

Innerthermostat

(Fan motor)

Liquid pipe thermistor

Fan motor capacitor

Drain-up mechanism

Linear expansion valve

Vane motor

OFF

130˚C±5˚C

90˚C±20˚C

DC12V Stepping motor drive

port dimension

ø 5.2

0~1800pulse <at R410A outdoor unit> 0~2000pulse <at the other outdoor unit>

OUTLINES AND DIMENSIONS

PLFY-P20·25·32·40·50·63·80·100VLMD-E

Unit :

170mm ± 5mm(Actual Length)

300mm or less

583mmMAX

73 202

222190

4-ø2.9 Mounting hole

Fresh air intake 240x45 knock out hole

240 197

45 216

710

Standard center panel

Terminal bed(Transmission)

Terminal bed(Power source)

670

70 146

507

634

574

108

D(Lifting Bolt Pitch)

108

Terminal box

Air filter

Water filling port

Drain hole

290

More Than 350

670

190

146

497

634

122

266

574

(Lifting Bolt Pitch)

(Gas)

(Liquid)

CMP-63VLW-B

CMP-40VLW-B

388776 82410401080

47399494612101250

PLFY-P63VLMD-E

PLFY-P50VLMD-E

PLFY-P40VLMD-E

PLFY-P32VLMD-E

PLFY-P25VLMD-E

PLFY-P20VLMD-E

Model

217.5✕2

=435

PLFY-P100VLMD-E

PLFY-P80VLMD-E

188.5✕4

=754

1494 723144617101750

CMP-100VLW-B

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

2.It is available to connect the branch duct on right and left side both.

3.On Model :50, 100, you would use flare nut packed with the Indoor

Unit, when connnecting the Outdoor Unit for R407C, R22.

4.In order to increase the strength of the flare nut, the size of some

of them has been increased.

<flare>

Model Gas pipe:LP ø12.7

20·25·32·40 Liquid pipe:HP ø6.35

Model Gas pipe:LP ø12.7<R410A outdoor unit>

50 ø15.88<The other outdoor unit>

Liquid pipe:HP ø6.35<R410A outdoor unit>

ø9.52<The other outdoor unit>

Model Gas pipe:LP ø15.88

63·80 Liquid pipe:HP ø9.52 Model Gas pipe:LP ø15.88<R410A outdoor unit>

100 ø19.05<The other outdoor unit>

Liquid pipe:HP ø9.52

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

········ 1

········ 2

········ 1

········ 2

········ 1

········ 2

········ 1

········ 2

········ 3

G-ø2.9 Mounting hole

Branch duct Fx110 knock out hole

(both side)(Note:2)

Control box

2020 B

D(Lifting bolt pitch)

221

34159

52110

PLFY-P125VLMD-E

Unit :

Water filling port

Air filter

20 338~353

4-ø2.8Mounting hole

Standard center panel

(CMP-125VLW-B)

Branch duct ø200 knock out hole (both side)

4-ø2.9Mounting hole

Fresh air intake ø150 knock out hole

ø224

ø172

303

170mm±5mm(Actual length)

600mm Max

300mm or less

More than 350

155

255

127127

107

574

1970

670

4848

107 1756

6868 574(Lifting bolt pitch)

192

1970(Ceiling opening)

670(Ceiling opening)20 20

710

2010

2020

290

606

145

856

1708

1756

(Lifting bolt pitch)

181

235

Drain hole

222

Control box

Terminal box

Terminal bed

(Power source)

70 333

106

476

70 178

606

Terminal bed

(Transmission)

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

2.On this model, you would use flare nut packed

with the Indoor Unit, when connnectingthe

Outdoor Unit for R407C, R22.

3.In order to increase the strength of theflare nut,

the size of some of them has been increased.

(Gas)

(Liquid)

22PLFY-P125VLMD-E

Model

<flare>

Gas pipe:LP ø15.88<R410A outdoor unit>

ø19.05<The other outdoor unit>

Liquid pipe:HP ø9.52 Drain hose VP-25<flexible joint> (accessory)

········ 1

········ 2 ········ 3

PLFY-P20·25·32·40·50·63·80·100VLMD-E with OA duct flange

Unit : mm

5234110

159

221

Control Box

G-ø 2.9 Mounting hole

both side

206

241

138

243

103

D(Lifting Bolt Pitch)

B20

Branch duct Fx110 knock out hole

(both side)(Note:2)

45˚

Fresh air intake knock out dimension

Fresh air intake ø150 knock out hole

4-ø2.9 Mounting hole

172

150

90˚

103

128

108

D(Lifting Bolt Pitch)

108

574

634

507

14670

670

Terminal bed(Power source)

Terminal bed(Transmission)

128

241

256 189

Terminal box

Air filter

Water filling port

Drain hole

290

More Than 350

670

190

146

497

634

122

266

574

(Lifting Bolt Pitch)

170mm 5mm(Actual Length)

300mm or less

583mmMAX

710

Standard center panel

(Gas)

(Liquid)

CMP-63VLW-B

CMP-40VLW-B

388776 82410401080

47399494612101250

PLFY-P63VLMD-E

PLFY-P50VLMD-E

PLFY-P40VLMD-E

PLFY-P32VLMD-E

PLFY-P25VLMD-E

PLFY-P20VLMD-E

Model

217.5✕2

=435

PLFY-P100VLMD-E

PLFY-P80VLMD-E

188.5✕4

=754

1494 723144617101750

CMP-100VLW-B

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

2.It is available to connect the branch duct on right and left side both.

3.On Model :50, 100, you would use flare nut packed with the Indoor

Unit, when connnecting the Outdoor Unit for R407C, R22.

4.In order to increase the strength of the flare nut, the size of some

of them has been increased.

<flare>

Model Gas pipe:LP ø12.7

20·25·32·40 Liquid pipe:HP ø6.35

Model Gas pipe:LP ø12.7<R410A outdoor unit>

50 ø15.88<The other outdoor unit>

Liquid pipe:HP ø6.35<R410A outdoor unit>

ø9.52<The other outdoor unit>

Model Gas pipe:LP ø15.88

63·80 Liquid pipe:HP ø9.52 Model Gas pipe:LP ø15.88<R410A outdoor unit>

100 ø19.05<The other outdoor unit>

Liquid pipe:HP ø9.52

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

········ 1

········ 2

········ 1

········ 2

········ 1

········ 2

········ 1

········ 2

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