Mitsubishi Electric PKFY-P32VGM-A Service manual

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Mitsubishi Electric PKFY-P32VGM-A Service manual | Manualzz

OC310A---1.qxp 06.7.7 3:48 PM Page 1

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

July 2006

No. OC310

REVISED EDITION-A

Series PKFY Wall Mounted

<Indoor unit>

[Model names]

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E

R410A R407C R22

[Service Ref.]

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E

Revision:

RoHS PARTS LIST is added.

Some descriptions have been modified.

Please void OC310.

Note:

This manual describes only service data of the indoor units.

RoHS compliant products have <G> mark on the spec name plate.

For servicing of RoHS compliant products, refer to the

RoHS Parts List.

Indoor unit

CONTENTS

1. SAFETY PRECAUTION ···························2

2. PART NAMES AND FUNCTIONS············6

3. SPECIFICATIONS ····································8

4. OUTLINES AND DIMENSIONS ·············10

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

6. REFRIGERANT SYSTEM DIAGRAM····12

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

8. DISASSEMBLY PROCEDURE ··············20

9. PARTS LIST ···········································23

10. RoHS PARTS LIST ································25

OC310A---1.qxp 06.7.7 3:48 PM Page 2

1 SAFETY PRECAUTION

CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R407C

Do not use the existing refrigerant piping.

The old refrigerant and lubricant in the existing piping contains a large amount of chlorine which may cause the lubricant deterioration of the new unit.

Use liquid refrigerant to seal 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.

Use “low residual oil piping”

If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result.

Store the piping to be used during installation indoors with keep both ends 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 ESTR , ETHER or HAB as the lubricant to coat flares and flange connection parts.

If large amount of mineral oil enter, that can cause deterioration of refrigerant oil etc.

Do not use a refrigerant other than R407C.

If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the lubricant deterioration.

Use a vacuum pump with a reverse flow check valve.

The vacuum pump oil may flow back into the refrigerant cycle and cause the lubricant deterioration.

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

[1] Cautions for service

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.

[2] Refrigerant recharging

(1) Refrigerant recharging process

1 Direct charging from the cylinder.

·R407C cylinder are available on the market has a syphon pipe.

·Leave the syphon pipe cylinder standing and recharge it.

(By liquid refrigerant)

Unit

Gravimeter

(2) Recharge in refrigerant leakage case

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release the refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.

2

OC310A---1.qxp 06.7.7 3:48 PM Page 3

[3] Service tools

Use the below service tools as exclusive tools for R407C refrigerant.

No.

Tool name

1 Gauge manifold

2 Charge hose

3 Electronic scale

4 Gas leak detector

5 Adapter for reverse flow check.

6 Refrigerant charge base.

7 Refrigerant cylinder.

8 Refrigerant recovery equipment.

Specifications

·Only for R407C.

·Use the existing fitting SPECIFICATIONS. (UNF7/16)

·Use high-tension side pressure of 3.43MPa·G or over.

·Only for R407C.

·Use pressure performance of 5.10MPa·G or over.

·Use the detector for R134a or R407C.

·Attach on vacuum pump.

·For R407C ·Top of cylinder (Brown)

·Cylinder with syphon

3

OC310A---1.qxp 06.7.7 3:48 PM Page 4

Cautions for units utilizing refrigerant R410A

Do not use the existing refrigerant piping.

The old refrigerant and lubricant in the existing piping contains a large amount of chlorine which may cause the lubricant deterioration of the new unit.

Use “low residual oil piping”

If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result.

Use a vacuum pump with a reverse flow check valve.

Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc.

Use the following tools specifically designed for use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Gauge manifold

Charge hose

Gas leak detector

Torque wrench

Tools for R410A

Flare tool

Size adjustment gauge

Vacuum pump adaptor

Electronic refrigerant charging scale

Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)

If dirt, dust or moisture enter into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections.

If large amount of mineral oil enter, that can cause deterioration of refrigerant oil etc.

Charge refrigerant from liquid phase of gas cylinder.

If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered.

Keep the tools with care.

If dirt, dust or moisture enter into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.

4

OC310A---1.qxp 06.7.7 3:48 PM Page 5

[1] Cautions for service

(1) Perform service after collecting the refrigerant left in unit completely.

(2) Do not release refrigerant in the air.

(3) After completing service, charge the cycle with specified amount of refrigerant.

(4) When performing service, install a filter drier simultaneously.

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

· Check that cylinder for R410A on the market is syphon type.

· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

Unit

Gravimeter

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

No.

1 Gauge manifold

2 Charge hose

Specifications

·Only for R410A

·Use the existing fitting specifications. (UNF1/2)

·Use high-tension side pressure of 5.3MPa·G or over.

·Only for R410A

·Use pressure performance of 5.09MPa·G or over.

3 Electronic scale

4 Gas leak detector

5 Adaptor for reverse flow check

6 Refrigerant charge base

7 Refrigerant cylinder

·Use the detector for R134a, R407C or R410A.

·Attach on vacuum pump.

·Only for R410A Top of cylinder (Pink)

Cylinder with syphon

8 Refrigerant recovery equipment

5

OC310A---1.qxp 06.7.7 3:48 PM Page 6

2 PART NAMES AND FUNCTIONS

Indoor Unit

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E Air intake

Filter Air intake grille

Guide vane

Air outlet

Auto vane

Wired remote controller

On the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.

Operation buttons

Set Temperature buttons

Down

Up

Timer Menu button

(Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back

Ahead

Timer On/Off button

(Set Day button)

Opening the door.

TEMP.

ON/OFF

MENU

BACK MONITOR/SET

PAR-21MAA

ON/OFF

DAY

CLOCK OPERATION

FILTER

CHECK TEST

CLEAR

ON/OFF button

Fan Speed button

Filter button

(<Enter> button)

Test Run button

Check button (Clear button)

Airflow Up/Down button

Louver button

( Operation button)

To preceding operation number.

Ventilation button

( Operation button)

To next operation number.

6

OC310A---1.qxp 06.7.7 3:48 PM Page 7

● Display

For purposes of this explanation, all parts of the display are shown as lit. During actual operation, only the relevant items will be lit.

Identifies the current operation

Shows the operating mode, etc.

* Multilanguage display is supported.

“Centrally Controlled” indicator

Indicates that operation of the remote controller has been prohibited by a master controller.

“Timer Is Off” indicator

Indicates that the timer is off.

Temperature Setting

Shows the target temperature.

˚F˚C

TIME SUN MON TUE WED THU FRI SAT

TIMER Hr ON

AFTER AFTER OFF

ERROR CODE

˚F˚C

ONLY1Hr.

FUNCTION

FILTER

WEEKLY

SIMPLE

AUTO OFF

“Sensor” indication

Displayed when the remote controller sensor is used.

Day-of-Week

Shows the current day of the week.

Time/Timer Display

Shows the current time, unless the simple or Auto Off timer is set.

If the simple or Auto Off timer is set, shows the time remaining.

Up/Down Air Direction indicator

The indicator shows the direction of the outcoming airflow.

“One Hour Only” indicator

Displayed if the airflow is set to weak and downward during COOL or DRY mode. (Operation varies according to model.)

The indicator goes off after one hour, at which time the airflow direction also changes.

Room Temperature display

Shows the room temperature.

Louver display

Indicates the action of the swing louver. Does not appear if the louver is stationary.

(Power On indicator)

Indicates that the power is on.

“Locked” indicator

Indicates that remote controller buttons have been locked.

“Clean The Filter” indicator

Comes on when it is time to clean the filter.

Timer indicators

The indicator comes on if the corresponding timer is set.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in

Ventilation mode.

Caution

● Only the Power on indicator lights when the unit is stopped and power supplied to the unit.

● If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available” message.

If you are using the remote controller to drive multiple indoor units, this message will appear only if he feature is not present at the parent unit.

● When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature indication (For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.

7

OC310A---1.qxp 06.7.7 3:48 PM Page 8

3 SPECIFICATIONS

3-1. SPECIFICATION

Item

PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E

Power

Cooling capacity

V•Hz kW

Heating capacity kW

Cooling kW

Input

Heating kW

Cooling

Current

Heating

Exterior

(munsell symbol)

Height

A

A

— mm

Dimensions Width mm

Depth mm

Heat exchanger

F a n

Fan ✕ No

Air flow W 2

External static pressure

Fan motor output

Insulator k

/min

Pa kW

Air filter

Pipe dimensions

Gas side

Liquid side

Unit drain pipe size

Noise level W 2

Product weight

[

[ mm(in.)

[ mm(in.) mm dB kg

3.6

4.0

Note 1. Rating conditions (JIS B 8615-1)

Cooling : Indoor D.B. 27°C W.B. 19°C

Outdoor D.B. 35°C

Heating : Indoor D.B. 20°C

Outdoor D.B. 7°C W.B. 6°C

Single phase 220V-230V-240V · 50Hz / 220V · 60Hz

4.5

Plastic , white : <0.70Y 8.59/0.97>

Cross fin (Aluminum plate fin and copper tube)

11.5-10.5-9.5-8

12.7(1/2")

6.35(1/4")

O.D.20 (PVC pipe VP-20 connectable)

41-38-36-33

5.0

0.07

0.07

0.32

0.32

340

990

235

Linflow fan

0

0.03

Polyethylene sheet

PP honey comb

16

✕ 1

5.6

6.3

12-11-10-9

12.7(1/2") / 15.88(5/8")

6.35(1/4") / 9.52(3/8")

43-40-37-34

W 2. Air flow and the noise level are indicated as High – Middium1 – Middium2 – Low .

8

OC310A---1.qxp 06.7.7 3:48 PM Page 9

3-2. ELECTRICAL PARTS SPECIFICATIONS

Parts name

Model

Symbol

Room temperature thermistor TH21

PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E

Resistance 0

°

C/15k

, 10

°

C/9.6k

, 20

°

C/6.3k

, 25

°

C/5.4k

, 30

°

C/4.3k

, 40

°

C/3.0k

Liquid pipe temperature thermistor TH22 Resistance 0

°

C/15k

, 10

°

C/9.6k

, 20

°

C/6.3k

, 25

°

C/5.4k

, 30

°

C/4.3k

, 40

°

C/3.0k

Gas pipe temperature thermistor TH23

Fuse

(Indoor controller board)

FUSE

Resistance 0

°

C/15k

, 10

°

C/9.6k

, 20

°

C/6.3k

, 25

°

C/5.4k

, 30

°

C/4.3k

, 40

°

C/3.0k

Fan motor

(with inner-thermostat)

MF

250V 6.3A

Inner-thermostat

PM4V30-K 220-240V/220V , 50/60Hz

4 pole Output 30W

OFF 125

±

5 ;

Fan motor capacitor C1 2.0

µ

F 440V

Vane motor MV

Linear expansion valve LEV

Power supply terminal block TB2

MP 35 EA DC12V

DC12V Stepping motor drive

Port dimension [ 3.2 (0 ~ 2000pulse)

(L, N, ; ) 330V 30A

Transmission terminal block TB5 (M1, M2, S) 250V 20A

MA remote controller terminal block TB15 (1,2) 250V 10A

9

OC310A---1.qxp 06.7.7 3:48 PM Page 10

4 OUTLINES AND DIMENSIONS

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E

245 21 70

198 Air intake 60

80

280 31

Unit : mm

340

53 79

245 21 70

30 or more 180 or more

135

190

245

300

360

405

345

320

260

205

150

95

35

0

20

32

75

495

495

2.5

R5

R52.5

425

R

52.5

R

52.5

190

170

0

210

230

420

10

OC310A---1.qxp 06.7.7 3:48 PM Page 11

5 WIRING DIAGRAM

PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E

Legend

Symbol

I.B

CN32

CN41

CN51

CN52

F.C

FUSE

SW2

SW3

SW4

X4

ZNR

Name

Indoor controller board

Connector Remote switch

HA terminal-A

Centrally control

Remote indication

Fan phase control

Fuse (6.3A)

Switch Capacity code

Mode selection

Model selection

Aux.Relay (Fan motor)

Varistor

Symbol

C1

LEV

MF

MV

P.B

TB2

TB5

TB15

TH21

TH22

Name Symbol Name

Capacitor (fan motor)

Linear expansion valve

Fan motor (with inner thermo)

Vane motor

Indoor power board

Terminal block

Thermistor

Power supply

Transmission

MA-Remote Controller

Room temperature detection

(0ºC/15k " , 25ºC/5.4k

" )

Pipe temperature detection/Liquid

(0ºC/15k " , 25ºC/5.4k

" )

TH23

A.B

SW1

SW5

SW11

SW12

SW14

SWC

Thermistor Pipe temperature detection/Gas

(0ºC/15k " , 25ºC/5.4k

" )

Circuit board

Switch Mode selection

Voltage selection

Address setting 1st digit

Address setting 2nd digit

Connection No.

Option selector

TO NEXT INDOOR UNIT

MF

3 2 1

P.B

AC220-240V

(RED)

CNSK

TRANS

3

2

1

DC13.1V

(WHT)

CN2S

2

1

I.B

C1

FAN

(WHT)

F.C

1 3 5

X4

X4

CND

(RED)

1 3

FUSE

250V

6.3A

ZNR

6 5

(GRN)

VANE

CN6V

4 3 2 1 8 7 6

(RED)

ADDRESS

CN81

5 4 3 2 1

8

1 3 CNDK

(RED)

5

(RED)

ADDRESS

CN42

4 3 2 1

(GRN)

REMOTE

INDICATION

CN52

0N

0FF

1

SW2

(WHT)

CENTRALLY

CONTROL

CN51

5

1 2 3 4 5 6

1

SW3

6 5

1 2 3 4 5 6 7 8 9 10

LED1

CN2D

(WHT)

(BLU)

(M-NET)

CN2M

1

2

1

2

(WHT)

LEV

CN60

4 3 2

4

1

(WHT)

HA

CN41

1

1

(WHT)

REMOTE

SWITCH

CN32

3

(WHT)

DRAIN

CN31

3 2 1

CN3A

(BLU)

1

2

3

SW4

1 2 3 4 5

(RED) (WHT)

0N

0FF

INTAKE

CN20

2 1

LIQUID

CN21

2 1

(BLK)

GAS

CN29

2 1

LED2

BLK

WHT

BLU

BLU

ORN

ORN

6

4

RED

BLU

TB2

L

N

GRN/YLW

PULL BOX

FUSE(15A)

BREAKER

(15A)

TB5

M2

M1

POWER SUPPLY

~ 220-240V 50Hz

~ 220V 60Hz

TB15

1

2

{

TO OUTDOOR UNIT

BC CONTROLLER

REMOTE CONTROLLER

DC24-30V

TO MA-REMOTE

CONTROLLER

DC8.7-13V

MV

A.B

0

220V

SW1

ON

OFF

1 2 3 4 5 6 7 8 910

3RD

DIGIT

SW5

2ND

DIGIT

240V

SW12 SW11

0 0

1ST

DIGIT

(RED)

ADDRESS

CN43

SWC

2

1

4

3

(RED)

ADDRESS

CN82

SW14

0

CONNECTION

NO.

3

2

5

4

1

8

7

6

See fig: w

1

<fig: w 1>

Models

P32

P40

P50

LEV TH21 TH22 TH23

SW2

ON

OFF

1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6

SW3

ON

OFF

1 2 3 4 5 6 7 8 910

ON

OFF

1 2 3 4 5 6 7 8 910

ON

OFF

1 2 3 4 5 6 7 8 910

SW4

ON

OFF

1 2 3 4 5

ON

OFF

1 2 3 4 5

ON

OFF

1 2 3 4 5

Note

1.At servicing for outdoor unit,always follow the wiring diagram of outdoor unit.

2.In case of using MA-Remote controller, please connect to TB15.

(Remote controller wire is non-polar.)

3.In case of using M-NET, please connect to TB5.

(Transmisson line is non-polar.)

4.Symbol[S] of TB5 is the shield wire connection.

5.Symbols used in wiring diagram above are, :terminal block, :connecter.

6.The setting of the SW2 dip switches differs in the capacity for the detail,refer to the fig: w 1.

7.Please set the switch SW5 according to the power supply voltage.

Set SW5 to 240V side when the power supply is 230 and 240 volts.

When the power supply is 220 volts,set SW5 to 220V side.

LED on indoor board for service

Mark Meaning

LED1

LED2

Main power supply

Power supply for

MA-Remote controller

Function

Main power supply(Indoor unit:220-240V) power on ➞ lamp is lit

Power supply for MA-Remote controller on ➞ lamp is lit

11

OC310A---1.qxp 06.7.7 3:48 PM Page 12

6 REFRIGERANT SYSTEM DIAGRAM

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E

Gas pipe temperature thermistor TH23

Strainer (#50mesh)

Gas pipe

Liquid pipe temperature thermistor TH22

Flare connection

Heat exchanger

Liquid pipe

Linear expansion valve

Strainer (#100mesh)

Strainer (#100mesh)

Room temperature thermistor

TH21

Capacity

Item

Gas pipe

Liquid pipe

PKFY-P32VGM-E PKFY-P40VGM-E

{ 12.7 (1/2”)

{ 6.35 (1/4”)

PKFY-P50VGM-E

{ 12.7 (1/2”) or [ 15.88(5/8”)

{ 6.35 (1/4”) or [ 9.52(3/8”)

12

OC310A---1.qxp 06.7.7 3:48 PM Page 13

7 TROUBLE SHOOTING

7-1. HOW TO CHECK

PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E

Parts name

Room temperature thermistor (TH21)

Liquid pipe temperature thermistor (TH22)

Gas pipe temperature thermistor (TH23)

Check method

Disconnect the connector then measure the resistance with the tester.

(Surrounding temperature 10°C~30°C)

Normal

4.3k

' ~9.6k

'

Abnormal

Open or short Refer to the next page for the details.

Vane motor

Orange 4

Red

5

M

Pink

2

3 6

1

Yellow Brown Blue

Measure the resistance between the terminals using the tester.

(Surrounding temperature 20°C~30°C)

Normal Connector

Brown - Yellow

Brown - Blue

Red - Orange

Red - Pink

186 ' ~ 214 '

Abnormal

Open or short

Fan motor

Fan

3

Red 1

2

White

2

1

Black

3

Protector

Measure the resistance between the terminals using the tester.

(Surrounding temperature 20°C)

Motor terminal or relay connector

Red - Black

White - Black

Normal

141.2

131.5

Abnormal

Open or short

Linear expansion valve

Blue

4

M 6

Brown

1 5 3

2 Yellow

White Red Orange

Disconnect the connector then measure the resistance with the tester.

(Surrounding temperature 20°C)

(1)-(5)

White-Red

Normal

(2)-(6)

Yellow-Brown

(3)-(5)

Orange-Red

(4)-(6)

Blue-Brown

150 ' ±10%

Abnormal

Open or short

Refer to the next page for the details.

13

OC310A---1.qxp 06.7.7 3:48 PM Page 14

<Thermistor Characteristic graph>

Thermistor for lower temperature

Room temperature thermistor(TH21)

Liquid pipe temperature thermistor (TH22)

Gas pipe temperature thermistor (TH23)

50

40

Thermistor R

0

=15k ' ± 3%

Fixed number of B=3480K ± 2%

Rt=15exp { 3480( ) }

273+t 273

0 : 15k '

10 : 9.6k

'

20 : 6.3k

'

25 : 5.4k

'

30 : 4.3k

'

40 : 3.0k

'

30

20

10

< Thermistor for lower temperature >

0

-20 -10 0 10 20 30 40 50

Temperature ( : )

Linear expansion valve

① Operation summary of the linear expansion valve.

• Linear expansion valve open/close through stepping motor after receiving the pulse signal from the indoor controller board.

• Valve position can be changed in proportion to the number of pulse signal.

<Connection between the indoor controller board and the linear expansion valve>

Linear expansion valve

4 Blue

M

1

White Red

5

Brown

6

2

3

Orange

Yellow

[ 4

[ 3

[ 2

[ 1

Brown

Red

Blue

Orange

Yellow

White

Connector(CN60)

4

3

2

1

6

5

Controller board

DC12V

Drive circuit

[ 4

[ 3

[

[

2

1

14

OC310A---1.qxp 06.7.7 3:48 PM Page 15

<Output pulse signal and the valve operation>

Output

Output

(Phase)

1 2 3 4

{ 1 ON OFF OFF ON

{ 2 ON ON OFF OFF

{ 3

{ 4

OFF

OFF

ON

OFF

ON

ON

OFF

ON

➁ Linear expansion valve operation

D C

Closing a valve : 1 → 2 → 3 → 4 → 1

Opening a valve : 4 → 3 → 2 → 1 → 4

The output pulse shifts in above order.

❈ 1. When linear expansion valve operation stops, all output phase become OFF.

2. At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor locks and vibrates.

❈ When the switch is turned on, 2200 pulse closing valve signal will be send till it goes to ⁄ point in order to define the valve position.

A

E

Close

Open

2000 pulse

Opening a valve all the way

When the valve move smoothly, there is no noise or vibration occurring from the linear expansion valve : however, when the pulse number moves from ⁄ to ⁄ or when the valve is locked, more noise can be heard than normal situation.

❈ Noise can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion valve.

B

Extra tightning (80~100pulse)

Pulse number

➂ Trouble shooting

Symptom Check points

Operation circuit failure of the micro processor.

Disconnect the connector on the controller board, then connect LED for checking.

4

3

6

5

2

1

1 T LED

Pulse signal will be sent out for 10 seconds as soon as the main switch is turned on. If there is LED with lights on or lights off, it means the operation circuit is abnormal.

Countermeasures

Exchange the indoor controller board at drive circuit failure.

Linear expansion valve mechanism is locked.

Short or breakage of the motor coil of the linear expansion valve.

Motor will idle and make ticking noise when motor is operated while the linear expansion valve is locked. This ticking sound is the sign of the abnormality.

Exchange the linear expansion vale.

Measure the resistance between the each coil (red-white, red-orange, brown-yellow, brown-blue) using a tester. It is normal if the resistance is in the range of 150 ' +10%.

Exchange the linear expansion valve.

Valve doesn't close completely (thermistor leaking).

To check the linear expansion valve, operate the indoor unit in fan mode and at the same time operate other indoor units in cooling mode, then check the pipe temperature <liquid pipe temperature> of the indoor unit by the outdoor multi controller board operation monitor. During fan operation, linear

Liquid pipe thermistor expansion valve is closed completely and if there are some leaking, detecting tempera-

Linear expansion valve ture of the thermistor will go lower. If the detected temperature is much lower than the temperature indicated in the remote controller, it means the valve is not closed all the way. It is not necessary to exchange the linear expansion valve, if the leakage is small and not making any trouble.

If large amount of thermistor is leaked, exchange the linear expansion valve.

Wrong connection of the connector or contact failure.

Check the color of lead wire and missing terminal of the connector.

Disconnect the connector at the controller board, then check the continuity.

15

OC310A---1.qxp 06.7.7 3:48 PM Page 16

7-2. FUNCTION OF DIPSWITCH

PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E

Switch Pole

1

2

Operation by switch

Function

ON OFF

Thermistor<Intake temperature detection>position

Built-in remote controller

Filter clogging detection Provided

Indoor unit

Not provided

SW1

Mode

Selection

3

4

5

6

7

8

Filter cleaning sign

Air intake

Remote indication switching

Humidifier control

Air flow set in case of

Heat thermostat OFF

Remarks

Address board

2500hr

Effective

Thermostat ON signal indication Fan output indication

Always operated while the heating mode w 1 Operated depends on the condition w 2

Fix to LOW

100hr

Not effective w 3 Fix to EXTRA LOW

Depends on setting Remote controller w

3 Depends on SW1-7 w 3

<At delivery>

ON

OFF

1 2 3 4 5 6 7 8 9 10

NOTE: w

1 At Heating mode, fan operating.

w 2 At Heating mode, operating heat thermostat ON.

w 3 SW1-7=OFF, SW1-8=ON

→ Setting air flow.

SW1-7=ON, SW1-8=ON

→ Indoor fan stop.

9

Auto restart

10

Power source ON/OFF

Effective

Effective

Not effective

Not effective

Indoor controller board

Set while the unit is off.

SW2

Capacity code setting

1~6

Capacity

P32

SW2

ON

OFF

1 2 3 4 5 6

Capacity

P40

SW2

ON

OFF

1 2 3 4 5 6

Capacity

P50

SW2

ON

OFF

1 2 3 4 5 6

<At delivery>

Set for each capacity.

1

2

3

Heat pump/Cooling only Cooling only models

Louver

Vane

Available

Available

4

Vane swing function Available

SW3

Function

Selection

5

6

7

Vane horizontal angle Second setting

Vane cooling limit angle setting w 4 Horizontal angle

Indoor linear expansion valve opening

Effective

Heater 4deg up Not effective

8

9

Target Superheat setting w 5 9degrees

10

Target Sub cool setting 15degrees

SW4

Unit

Selection

1~5

ON

OFF

1 2 3 4 5

Heat pump models

Not available

Not available

Not available

First setting

Down B,C

Not effective

Effective

6degrees

10degrees

Indoor controller board

Set while the unit is off.

<At delivery>

ON

OFF

1 2 3 4 5 6 7 8 9 10

NOTE: w

4 At cooling mode, each angle can be used only 1 hour.

w

5 sw3-9 setting

P32 = OFF

P40 = ON

P50 = OFF

Indoor controller board

Set while the unit is off.

ON

OFF

<At delivery>

1 2 3 4 5

16

OC310A---1.qxp 06.7.7 3:48 PM Page 17

Switch Pole

SW11

1st digit address setting

SW12

2nd digit address setting

SW14

Connect ion No.

setting

SW5

Voltage

Selection

2

SW12

8

9

0

6 5

4

1

2

3

10

SW11

8

9

0

6 5

4

1

2

3

1

SW14

B

D

E

F

A

9 8

0

7

1

2

3

5

6

Operation by switch

Address setting should be done when

M-NET remote controller is being used.

This is the switch to be used when the indoor unit is operated with R2 series outdoor unit as a set.

Remarks

Address board

Address can be set while the unit is stopped.

<At delivery>

SW12

8

9

0

6

5

4

1

2

3

SW11

8

9

0

6

5

4

1

2

3

Address board

<At delivery>

SW14

B

D

E

F

A

9

0

8

7

1

2

3

5

6

220V 240V

If the unit is used at the 230V or 240V area, set the voltage to 240V.

If the unit is used at the 220V, set the voltage to 220V.

Address board

<At delivery>

220V 240V

17

OC310A---1.qxp 06.7.7 3:49 PM Page 18

7-3. TEST POINT DIAGRAM

7-3-1. Indoor controller board

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E

CN2D

Connect to the indoor power board (CN2S)

12.5-13.7V DC (Pin 1 (+))

CN2M

Connect to the terminal block (TB5)

(M-NET transmission connecting wire)

24-30V DC (non-polar)

CN3A

Connect to the terminal block (TB15)

(MA-Remote controller connecting wire)

Between 1 to 3 8.7-13V DC (Pin 1 (+))

LED1

Main power supply

(Indoor unit : 220-240V)

CND

Power supply for indoor controller board

Between 1 to 3 220-240V AC

CNP

Drain-up machine output (DP)

Between 1 to 3 220-240V AC

FUSE

6.3A 250V

CNDK

Connect to the indoor power board (CNSK)

Between 1 to 3 220-240V AC

CN29

Pipe temperature thermistor/Gas (TH23)

CN21

Pipe temperature thermistor/Liquid (TH22)

LED2

Power supply for

MA-Remote controller

CN20

Room temperature thermistor (TH21)

CN32

Connector

(Remote switch)

SW4

Model selection

CN60

Linear expansion valve output (LEV)

CN31

Drain sensor (DS)

SW3

Mode selection

CN51

Centrally control

SW2

Capacity setting

CN52

Remote indication

CN6V

Vane moter output (MV)

FAN

Fan motor output (MF)

18

OC310A---1.qxp 06.7.7 3:49 PM Page 19

7-3-2. Indoor power board

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E

CN2S

Connect to the indoor power board (CN2D)

Between 1 to 3 12.6-13.7V DC (Pin 1 (+))

CNSK

Connect to the indoor controller board (CNDK)

Between 1 to 3 220-240V AC

19

OC310A---1.qxp 06.7.7 3:49 PM Page 20

8 DISASSEMBLY PROCEDURE

PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E

OPERATION PROCEDURE PHOTOS & ILLUSTRATION

(Figure 1)

Hook

1. REMOVE THE LOWER SIDE OF THE INDOOR UNIT FROM

THE INSTALLATION PLATE

(1) Remove the left / right corner box of the indoor unit.

(2) Hold and pull down the lower and both ends of the indoor unit, and remove the ▼ section from the square hole.

(Refer to the figure 2.1)

Or remove the front panel and push the ▼ section down by using alankey ,etc. from the front side.

(Refer to the figure 2.2).

(3) Unhook the top of the indoor unit from the back plate catch.

(Figure2.1)

(Figure 2.2)

Square hole

Up Down

2. REMOVING THE FRONT PANEL

(1) Open the front grille.

(2) Remove the terminal block cover with a screw.

(3) Remove the screw 3caps then remove the set 3screws.

(4) After removing the lower side of the front panel a little, remove it as pulling toward upper.

Square hole

(Figure 3)

Terminal block cover

Hook

Front grille

(Photo 1)

Front panel

3. REMOVING THE INDOOR CONTROLLER BOARD

(1) Remove the terminal block cover.

(2) Remove the front panel. (See the photo 1)

(3) Remove the electrical parts box(2screws).

(4) Remove the electrical parts box cover(1 screw).

(5) Disconnect the connector on the indoor controller board and remove the controller board by Pulling up the hook of the controller case.

w To smooth works, hang the side hooks of the electrical parts box on the hook of the motor cover.

(See the photo 3)

(Photo 2)

Motor cover

Electrical parts box hook w

(Photo 3)

Hook

Set screw

Set screw

Electrical parts box

Set screw

Indoor control p.c.board

Controller case

Electrical parts box

20

OC310A---1.qxp 06.7.7 3:49 PM Page 21

OPERATION PROCEDURE

4. REMOVING THE VANE MOTOR

(1) Disconnect the connector CN6V on the indoor controller board.

(2) Remove the 2 screws of the vane motor, disconnect the lead wire and remove the vane motor from the shaft.

(Photo 4)

PHOTOS & ILLUSTRATION

Nozzle assemble

Set screws

Lead wire

5. REMOVING THE THERMISTOR

(1) Removing the room thermistor TH21.

1 Disconnect the connector CN20 <red> on the indoor controller board.

2 Remove the room thermistor from the holder.

(2) Removing the liquid pipe thermistor TH22.

1 Disconnect the connector CN21 <white> on indoor controller board.

2 Remove the liquid pipe thermistor with set to the pipe.

(3) Removing the gas pipe thermistor TH23.

1 Disconnect the connector CN29 <black> on indoor controller board.

2 Remove the gas pipe thermistor with set to the pipe.

Van motor

(Photo 5)

Liquid thermistor

Room thermistor

Gas pipe thermistor

Electrical parts box

6. REMOVING THE NOZZLE ASSEMBLE

(1) Disconnect the connector CN6V on the indoor controller board.

(2) Disconnect the lead wire of the vane motor.

(3) Remove the corner cover.

(4) Pull the drain hose out from the nozzle assemble.

(5) Unhook the hook of the lower nozzle assemble and pull the nozzle assemble toward you,then remove the nozzle assemble by sliding it down.

(Photo 6)

Nozzle assemble

(Photo 7)

Hook Drain hose

Corner cover

Vane motor connector

7. REMOVING THE ELECTRICAL PARTS BOX

(1) Remove the terminal block cover.

(2) Remove the front panel.(See the photo 1)

(3) Disconnect the vane motor connector.

(4) Disconnect the fan motor connector from the fan motor.

(5) Remove the liquid / gas pipe thermistor.(See the photo 5)

(6) Remove the electrical parts box (2 screws).

Liquid pipe thermistor

Electrical parts box

Fan motor connector

8. REMOVING THE FAN MOTOR

(1) Remove the terminal block cover.

(2) Remove the front panel.(See the photo 1)

(3) Remove the electrical parts box.(See the photo 7)

(4) Remove the nozzle assemble.(See the photo 6)

(5) Remove the fan motor leg fixing 3 screws.

(6) Unscrew the set screws using by alankey and remove it by sliding the fan motor to right.

(7) Remove the 4 screws and remove the motor cover from the fan motor leg.

(Photo 8)

Set screw screws

(Photo 9)

Motor cover

Fan motor

21 motor leg

OC310A---1.qxp 06.7.7 3:49 PM Page 22

OPERATION PROCEDURE

9. REMOVING THE LINE FLOW FAN

(1) Remove the terminal block cover.

(2) Remove the front panel.(See the photo 1)

(3) Remove the electrical parts box.(See the photo 7)

(4) Remove the nozzle assembly.(See the photo 6)

(5) Remove the fan motor.(See the photo 8)

(6) Remove the pipe fixture with 2 screws.(See the photo 11)

(7) Remove the left / right screws of the heat exchanger and pull the left-hand side up.

(8) Remove the 2screws by sliding it toward you remove the fixture(fixing bearing).

w

The fan motor is removable first , when the fan removing is hard.

w When resetting the fan to the fan motor.

Locate and fix the shaft after installing the fan.

(Photo10)

PHOTOS & ILLUSTRATION

Heat exchanger

Set screws

Fixture(fixing bearing)

(Photo 11)

10. REMOVING THE HEAT EXCHANGER

(1) Remove the terminal block cover.

(2) Remove the front panel.(See the photo 1)

(3) Remove the electrical parts box.(See the photo 7)

(4) Remove the corner box.

(5) Remove the nozzle assemble.(See the photo 6)

(6) Remove the 2screws and the pipe fixture.

(7) Remove the 2screws and heat exchanger.

Set screw

Heat exchanger

Pipe fixture Set screws

22

OC310A---1.qxp 06.7.7 3:49 PM Page 23

9 PARTS LIST (non-RoHS compliant)

STRUCTURAL PARTS

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E

13 12

1

2

11

10

9

8

3 4 5 6 7

No.

Parts No.

Parts Name

6

7

4

5

1

2

3

8

9

10

11

12

13

R01 89Y 651

R01 07Y 092

R01 07Y 691

R01 A16 500

R01 07Y 002

R01 07Y 096

R01 85Y 304

T7W B01 294

R01 07Y 658

R01 07Y 635

R01 07Y 808

R01 07Y 623

R01 09Y 658

FRONT PANEL

VANE SLEEVE

FRONT GRILLE

AIR FILTER

AUTO VANE

SCREW CAP

ADDRESS CABLE

ADDRESS BOARD

CORNER COVER

BOX ASSEMBLY

BACK PLATE

UNDER COVER

CORNER COVER

Specifications

PKFY-

P32,P40,P50VGM-E

1

1

1

1

1

1

1

2

1

3

1

1

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recommended

Price

Q'ty Unit Amount

A.B

23

OC310A---1.qxp 06.7.7 3:49 PM Page 24

ELECTRICAL PARTS

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E

4

5

6

7

8

9

3 2 1 28 27 26 25 24 23

29

TEMP.

ON/OFF

10

11 12 13 14 15 16 17 18 19 20 21 22

No.

Parts No.

Parts Name

1

2

19

20

21

22

23

24

25

26

27

28

29

12

13

14

15

16

17

18

7

8

9

10

11

5

6

3

4

T7W A01 762

R01 H55 480

R01 H56 480

R01 H57 480

R01 07Y 114

R01 005 103

R01 07Y 102

R01 07Y 106

T7W A00 675

R01 07Y 524

R01 07Y 530

R01 07Y 059

R01 07Y 038

R01 09Y 038

R01 E04 223

R01 07Y 527

R01 07Y 135

R01 07Y 105

T7W 512 716

T7W E00 716

T7W A14 716

R01 588 255

R01 E02 313

T7W E34 310

T7W 520 239

R01 E26 202

R01 E28 202

R01 E34 202

R01 07Y 130

R01 E63 401

FAN MOTOR

HEAT EXCHANGER

HEAT EXCHANGER

HEAT EXCHANGER

LINE FLOW FAN

SLEEVE BEARING

BEARING MOUNT

BEARING SUPPORT

FAN GUARD

DRAIN PLUG

NOZZLE ASSY

ARM

GUIDE VANE

GUIDE VANE

VANE MOTOR

DRAIN HOSE

MOTOR COVER

RUBBER MOUNT

TERMINAL BLOCK

TERMINAL BLOCK

TERMINAL BLOCK

RUN CAPACITOR

POWER BOARD

CONTROLLER BOARD

FUSE

ROOM THERMISTOR

LIQUID PIPE THERMISTOR

GAS PIPE THERMISTOR

MOTOR SUPPORT

LINEAR EXPANSION VALVE

REMOTE CONTROLLER

PKFY-

Specifications

P32VGM

-E

P40VGM

-E

P50VGM

-E

1 1 1

1

1

1

1

1

1

1

1

1

2

10

1

1

1

1

1

1

1

2

10

1

1

1

1

1

1

1

1

2

10

2P(1,2)

3P(M1,M2,S)

3P(L,N, ; )

2.0

= 440V

250V 6.3A

1

1

1

1

1

1

1

1

1

4

1

2

1

1

4

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

4

1

2

1

1

1

1

1

1

1

1

1

PAR-21MAA

1

1

1

1

1

1

1

1

1

1

1

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recommended

Q'ty

MF

Price

Unit Amount

MV

TB15

TB5

TB2

C1

P.B

I.B

FUSE

TH21

TH22

TH23

LEV

24

OC310A---1.qxp 06.7.7 3:49 PM Page 25

10 RoHS PARTS LIST

STRUCTURAL PARTS

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E

13 12

2

1

8

3 4 5 6 7

No.

Parts No.

Parts Name

G

G

G

G

G

G

G

G

G

G

G

G

G

3

4

5

1

2

8

9

6

7

10

11

12

13

R01 E05 651

R01 08Y 092

R01 08Y 691

R01 A32 500

R01 08Y 002

R01 08Y 096

R01 A00 304

T7W E01 294

R01 08Y 658

R01 08Y 635

R01 08Y 808

R01 08Y 623

R01 10Y 658

FRONT PANEL

VANE SLEEVE

FRONT GRILLE

AIR FILTER

AUTO VANE

SCREW CAP

ADDRESS CABLE

ADDRESS BOARD

CORNER COVER

BOX ASSEMBLY

BACK PLATE

UNDER COVER

CORNER COVER

Specifications

PKFY-

P32,P40,P50VGM-E

1

1

1

1

1

1

1

1

3

1

2

1

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recommended

Price

Q'ty Unit Amount

A.B

25

11

10

9

OC310A---1.qxp 06.7.7 3:49 PM Page 26

ELECTRICAL PARTS

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E

4

5

6

7

8

9

3 2 1 28 27 26 25 24 23

29

TEMP.

ON/OFF

10

11 12 13 14 15 16 17 18 19 20 21 22

No.

1

2

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

18

19

20

21

22

23

24

25

26

27

28

29

11

12

13

14

15

16

17

6

7

8

9

10

3

4

5

Parts No.

Parts Name

T7W A02 762

R01 J34 480

R01 J35 480

R01 J36 480

R01 E22 114

R01 E04 103

R01 08Y 102

R01 08Y 106

T7W A01 675

R01 08Y 524

R01 08Y 530

R01 08Y 059

R01 08Y 038

R01 10Y 038

R01 E14 223

R01 08Y 527

R01 08Y 135

R01 08Y 105

T7W E33 716

R01 E27 246

T7W E32 716

R01 E13 255

R01 E38 313

T7W E53 310

R01 E06 239

R01 H08 202

R01 H07 202

R01 H13 202

R01 08Y 130

R01 H05 401

FAN MOTOR

HEAT EXCHANGER

HEAT EXCHANGER

HEAT EXCHANGER

LINE FLOW FAN

SLEEVE BEARING

BEARING MOUNT

BEARING SUPPORT

FAN GUARD

DRAIN PLUG

NOZZLE ASSY

ARM

GUIDE VANE

GUIDE VANE

VANE MOTOR

DRAIN HOSE

MOTOR COVER

RUBBER MOUNT

TERMINAL BLOCK

TERMINAL BLOCK

TERMINAL BLOCK

RUN CAPACITOR

POWER BOARD

CONTROLLER BOARD

FUSE

ROOM THERMISTOR

LIQUID PIPE THERMISTOR

GAS PIPE THERMISTOR

MOTOR SUPPORT

LINEAR EXPANSION VALVE

REMOTE CONTROLLER

PKFY-

Specifications

P32VGM

-E

P40VGM

-E

P50VGM

-E

1 1 1

1

1

2P(1,2)

3P(M1,M2,S)

3P(L,N, ; )

2.0

= 440V

250V 6.3A

1

1

1

1

1

1

1

2

10

4

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

10

4

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

10

4

1

2

1

1

1

1

1

1

1

1

1

1

PAR-21MAA

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

MF

Recommended

Q'ty

Price

Unit Amount

MV

TB15

TB5

TB2

C1

P.B

I.B

FUSE

TH21

TH22

TH23

LEV

26

OC310A---1.qxp 06.7.7 3:49 PM Page 27

27

OC310A---1.qxp 06.7.7 3:49 PM Page 28

HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN c Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.

Distributed in Jul. 2006 No. OC310 REVISED EDITION-A PDF 8

Distributed in Apr. 2004 No. OC310 PDF 9

Made in Japan

New publication, effective Jul. 2006

Specifications subject to change without notice

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