Mitsubishi Electric PKFY Series Manuale operativo

TECHNICAL & SERVICE MANUAL

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. TROUBLESHOOTING···························13

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

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

[Model names] [Service Ref.]

PKFY-P32VGM-E PKFY-P32VGM-E

PKFY-P40VGM-E PKFY-P40VGM-E

PKFY-P50VGM-E PKFY-P50VGM-E

No. OC310

REVISED EDITION-B

Wall Mounted

Series PKFY

Indoor unit

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

R407C R22

R410A

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 com-

pliant products, refer to the

RoHS Parts List.

Revision:

•

The indicated No. of CORNER

COVER (page 23) have

been corrected in REVISED

EDITION-B.

• Some descriptions have

been modified.

• Please void OC310

REVISED EDITION-A.

March 2013

1SAFETY PRECAUTION

Cautions for units utilizing refrigerant R407C

CAUTIONS RELATED TO NEW REFRIGERANT

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 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.

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.

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.

Ventilate the room if refrigerant leaks during

operation. If refrigerant comes into contact with

a flame, poisonous gases will be released.

Store the piping indoors, and both ends of the

piping sealed until just before brazing.

(Leave elbow joints, etc. in their packaging.)

If dirt, dust or moisture enters into refrigerant cycle, that

can cause deterioration of refrigerant oil or malfunction of

compressor.

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the

unit is being used, serviced, or disposed of.

Correct refrigerant is specified in the manuals and on the

spec labels provided with our products.

We will not be held responsible for mechanical failure,

system malfunction, unit breakdown or accidents caused

by failure to follow the instructions.

Use the specified refrigerant only.

OC310B

[2] Refrigerant recharging

(1) Refrigerant recharging process

1Direct 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)

(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.

[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 iquid refrigerant.

Gravimeter

Unit

[3] Service tools

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

No. Tool name Specifications

1Gauge manifold ·Only for R407C.

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

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

2Charge hose ·Only for R407C.

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

3Electronic scale

—

4Gas leak detector ·Use the detector for R134a or R407C.

5Adapter for reverse flow check. ·Attach on vacuum pump.

6Refrigerant charge base.

—

7Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)

·Cylinder with syphon

8Refrigerant recovery equipment.

—

OC310B

Cautions for units utilizing refrigerant R410A

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.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrige-

rant can cause deterioration of refrigerant oil etc.

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.

Handle tools with care.

If dirt, dust or moisture enter into refrigerant cycle, that can

cause deterioration of refrigerant oil or malfunction of com-

pressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigera-

nt will change and the efficiency will be lowered.

Flare tool

Electronic refrigerant

charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for 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.

The refrigerant oil applied to flare and flange

connections must be ester oil, ether oil or

alkylbenzene oil in a small amount.

If large amount of mineral oil enters, that can cause deterio-

ration of refrigerant oil etc.

Store the piping indoors, and both ends of the

piping sealed until just before brazing.

(Leave elbow joints, etc. in their packaging.)

If dirt, dust or moisture enters into refrigerant cycle, that

can cause deterioration of refrigerant oil or malfunction of

compressor.

Ventilate the room if refrigerant leaks during

operation. If refrigerant comes into contact with

a flame, poisonous gases will be released.

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the

unit is being used, serviced, or disposed of.

Correct refrigerant is specified in the manuals and on the

spec labels provided with our products.

We will not be held responsible for mechanical failure,

system malfunction, unit breakdown or accidents caused

by failure to follow the instructions.

Use the specified refrigerant only.

OC310B

[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.)

Gravimeter

Unit

[3] Service tools

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

No. Specifications

1Gauge manifold ·Only for R410A

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

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

2Charge hose ·Only for R410A

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

3Electronic scale

4Gas leak detector ·Use the detector for R134a, R407C or R410A.

5Adaptor for reverse flow check ·Attach on vacuum pump.

6Refrigerant charge base

7Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)

Cylinder with syphon

8Refrigerant recovery equipment

OC310B

2PART NAMES AND FUNCTIONS

●Indoor Unit

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E Air intake Air intake grille

Filter

Air outlet

Guide vane

Auto vane

●Operation buttons

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Set Temperature buttons

Down

Timer Menu button

(Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back

Ahead

Timer On/Off button

(Set Day button)

Opening the

cover

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.

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

●Wired remote controller

OC310B

●Display

°F°C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

OFF

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

For purposes of this explanation,

all parts of the display are shown.

During actual operation, only

the relevant items will be lit.

Identifies the current operation

Shows the operating mode, etc.

*Multilanguage display is available.

“Centrally Controlled” indicator

Indicates that operation from the

remote controller has been prohib-

ited by a master controller.

“Timer is Off” indicator

Indicates that the timer is off.

Temperature Setting

Shows the target temperature.

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, the time to be

switched off is shown.

“Sensor” indication

Displays when the remote controller

sensor is used.

“Locked” indicator

Indicates that remote controller but-

tons have been locked.

“Clean The Filter” indicator

To be displayed on when it is time to

clean the filter.

Timer indicators

The indicator comes on if the corre-

sponding timer is set.

Up/Down Air Direction indica-

tor

The indicator shows the direc-

tion of the outcoming airflow.

“One Hour Only” indicator

Room Temperature display

Shows the room temperature. The room

temperature display range is 8 - 39.

The display blinks if the temperature

is less than 8or 39or more.

Louver display

Indicates the action of the swing louver.

Does not appear if the louver is not

running.

(Power On indicator)

Indicates that the power is on.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in

Ventilation mode.

Displays if the airflow is set to

Low or downward during COOL

or DRY mode. (Operation varies

according to model.)

The indicator goes off in one hour,

at which time the airflow direction

also changes.

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.

OC310B

3SPECIFICATIONS

3-1. SPECIFICATION

Item

V•Hz

—

m²/min

—

mm(in.)

Cooling capacity

Power

Heat exchanger

Insulator

Air filter

Fan 5 No

Air flow *2

Pipe

dimensions

Unit drain pipe size

Noise level *2

Product weight

Exterior

(munsell symbol)

Fan motor

output

External

static pressure

Liquid

side

Gas

side

Heating capacity

Dimensions

Height

Width

Depth

Electric characteristic

Input

Cooling

Heating

Cooling

Heating

Current

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

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

3.6

4.0

4.5

5.0

0.07

0.32

Plastic , white : <0.70Y 8.59/0.97>

340

990

235

Cross fin (Aluminum plate fin and copper tube)

Linflow fan × 1

0.03

Polyethylene sheet

PP honey comb

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

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

11.5-10.5-9.5-8

12.7(1/2")

6.35(1/4")

41-38-36-33

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

*2.Air flow and the noise level are indicated as High – Medium1 – Medium2 – Low .

OC310B

3-2. ELECTRICAL PARTS SPECIFICATIONS

Room temperature thermistor

Liquid pipe temperature thermistor

Gas pipe temperature thermistor

Fuse

(Indoor controller board)

Fan motor

(with inner-thermostat)

Fan motor capacitor

Vane motor

Linear expansion valve

Power supply terminal block

Transmission terminal block

MA remote controller terminal block

Symbol

TH21

TH22

TH23

FUSE

LEV

TB2

TB5

TB15

PKFY-P32VGM-E PKFY-P40VGM-E

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

250V 6.3A

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

4 pole Output 30W

OFF 125±5

ºC

2.0μF 440V

MP 35 EA DC12V

DC12V Stepping motor drive

Port dimension 3.2 (0 ~ 2000pulse)

(L, N, ) 330V 30A

(M1, M2, S) 250V 20A

(1,2) 250V 10A

Model

Parts name PKFY-P50VGM-E

Inner-thermostat

OC310B

4 OUTLINES AND DIMENSIONS

Unit : mm

PKFY-P32VGM-E

PKFY-P40VGM-E

PKFY-P50VGM-E

Knockout hole for right piping

Refrigerant pipe.Drain pipe.

Wiring hole

Gas pipe

Liquid pipe

Address board

Filter grip

Knockout hole for under piping

Refrigerant piping.Drain pipe.

Wiring hole

Service panel

(Power supply access)

1/2F / 5/8F

Gas pipe

1/2F

Liquid pipe

1/4F / 3/8F

1/4F

32 , 40

Model

( Flexible hose total length 800 ) ( Right side piping

installation )

( Left side piping

installation )

Drain pipe (VP-20)

(Front view( to open the grille ))

12 - Louvers ( manual )

Air outlet

(Lower side)

Auto vane

(Left side) (Front view)

Air intake

Knockout hole for left piping

Refrigerant pipe.Drain pipe.Wiring hole.

(Right side)

700 153

449 86

581 54

280

245

395400

190

70 35

160 40

705 235

Less than 15

198

245

235

340

715 225

340 80 280 233

990

Installation plate

balance point hole

49 - 5 hole

for tapping screw

Knockout hole for

right-rear piping Right-rear

piping hole

( Necessary clearance for Unit installation )

R52.5

R52.5 R52.5

Unit center

Right side

Allowing clearances

Front view

*1 Sleeves are available on the market.

*2 For R22 or R407C.

*3 This size shows the lower end of through hole.

90 ~ 100

75 ~ 80

75 Through holeSleeve *1

50 *2

32 , 40 , 50

Model

Details of installation plate

14 - 14 hole

for bolts

Left-rear

piping hole

Knockout hole for

left-rear piping

Less than 130

50 or more 150 or more

180 or more

30 or more

425

420

170

190

210

230

322

130

190

230

272

310

150

205

260

320

345

495

135

190

245

300

360

405

495

OC310B

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