Mitsubishi Electric PKFY Series Manual de funcionamiento

TECHNICAL & SERVICE MANUAL

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

CONTENTS

1. SAFETY PRECAUTION ·····················3

2. PART NAMES AND FUNCTIONS······5

3. SPECIFICATION·································7

4. OUTLINES AND DIMENSIONS ·········9

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

6. REFRIGERANT SYSTEM DIAGRAM···11

7. TROUBLESHOOTING······················12

8. DISASSEMBLY PROCEDURE·········17

9. PARTS LIST ·····································20

Indoor unit

[Model names] [Service Ref.]

PKFY-P20VAM-A PKFY-P20VAM-A

PKFY-P25VAM-A PKFY-P25VAM-A

No. OC254

2001

Wall Mounted

Series PKFY

INDOOR UNIT

R407C R22

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SAFETY PRECAUTION

Cautions for using with the outdoor unit which adopts R407C 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.

· 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.

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.

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[3] 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.

Gravimeter

Unit

[1] 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.

[2] Notice on repair 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.

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PART NAMES AND FUNCTIONS

● Indoor Unit

PKFY-P20VAM-A

PKFY-P25VAM-A

● MA remote controller [PAR-20MAA]

● Once the operation of the unit is set, subsequent operations can only be performed by pressing the ON/OFF button

repeatedly.

● Operation buttons

Air intake grille Air intake

Guide vane Air Outlet

Auto Vane

Filter

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

Press this button to switch the cooler,

electronic dry (dehumidify), automatic

and heater modes.

OPERATION SWITCH button

This sets the room temperature. The

temperature setting can be performed

in 1:units

Setting range

Cooler 19:to 30:

Heater 17:to 28:

TEMP. ADJUSTMENT button

This switches between continuous

operation and the timer operation.

TIMER button

This switches between the operation

and stop modes each time it is pressed.

The lamp on this button lights during

operation.

ON/OFF button

Only press this button to perform an

inspection check or test operation.

Do not use it for normal operation.

CHECK-TEST RUN button

This switch the horizontal fan motion

ON and OFF.

(Not available for this model.)

LOUVER button

This adjusts the vertical angle of the

ventilation.

AIR DIRECTION button

This resets the filter service indication

display

FILTER button

This sets the current time, start time

and stop time.

TIME SETTING button

This sets the ventilation fan speed.

AIR SPEED button

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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

Caution

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

●When the central control remote control unit, which is sold separately, is used the ON-OFF button, operation switch button

and TEMP. adjustment button do not operate.

●“NOT AVAILABLE” is displayed when the Air speed button are pressed.This indicates that this room unit is not equipped

with the fan direction adjustment function and the louver function.

●When power is turned ON for the first time, it is normal that “H0” is displayed on the room temperature indication (For max.

2minutes). Please wait until this “H0” indication disappear then start the operation.

CENTRALLY

CONTROLLED display

This indicates when the unit is con-

trolled by optional features such as

central control type remote

controller.

TIMER display

This indicates when the continuous

operation and time operation modes

are set.

It also display the time for the timer

operation at the same time as when

it is set.

OPERATION MODE display

This indicates the operation mode.

STANDBY display

The [STANDBY] symbol is only dis-

played from the time the heating

operation starts unit the heated air

begins to blow.

DEFROST display

This indicates when the defrost

operation is performed.

CHECK display

This indicates when a malfunction

has occurred in the unit which should

be checked.

CLOCK display

The current time , start time and stop

time can be displayed in ten second

intervals by pressing the time switch

button. The start time or stop time is

always displayed during the timer

operation.

●Display

In this display example on the bot-

tom left, a condition where all dis-

play lamps light is shown for expla-

nation purposes although this differs

from actual operation.

Operation lamp

This lamp lights during operation,

goes off when the unit stops and

flashes when a malfunction occurs.

POWER display

This lamp lights when electricity is

supplied to the unit.

SET TEMPERATURE display

This displays the selected setting

temperature.

AIR DIRECTION display

This displays the air direction.

ROOM TEMPERATURE display

The temperature of the suction air

is displayed during operation. The

display range is 8°C to 39°C. The

display flashes 8°C when the actual

temperature is less than 8°C and

flashes 39°C when the actual tem-

perature is greater than 39°C.

display

This display lights in the check

mode or when a test operation is

performed.

CHECK MODE

TEST RUN

This lamp lights when the filter need

to be cleaned.

AIR SPEED display

The selected fan speed is displayed.

FILTER display

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SPECIFICATION

3-1. Specification

Power Supply

Starting Current

Fan ✕No.

Air flow w2

External static pressure

Fan motor output

Item

Power

Cooling capacity

Heating capacity

Exterior <munsell symbol>

Out dimensions

Heat exchanger

Fan

Insulator

Air filter

Pipe dimensions

Unit drain pipe size

Noise level w2

Product weight

Unit

[,V,Hz

—

K/min

—

[mm(in.)

[mm

Cooling

Heating

Cooling

Heating

Height

Width

Depth

Gas side

Liquid side

PKFY-P20VAM-A

2.2

2.5

PKFY-P25VAM-A

2.8

3.2

0.04

0.20

Plastic munsell : <2.60Y 8.66/0.69>

295

815

158

Cross fin

Lineflow fan ✕1

5.9-5.6-5.2-4.9

0.017

Polyethylene sheet

PP honey comb

12.7 (1/2")

6.35 (1/4")

PVC pipe VP-16 connectable (I.D. 16)

36-35-33-32

8.5

Electric

characteristic

Single phase, 220-230-240V, 50Hz

Single phase, 220V, 60Hz

Note 1. Rating conditions

Cooling :Indoor D.B. 27°C W.B. 19.0°C

Outdoor D.B. 35°C W.B. 24°C

Heating : Indoor D.B. 20°C

Outdoor D.B. 7°C W.B. 6°C

ww2. Air flow and the noise level are indicated as High-Middium 1-Middium2-Low.

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3-2. Electrical parts specifications

Parts name

Model Symbol

TH21

TH22

TH23

FUSE

LEV

TB2

TB5

Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.2k", 30:/4.3k", 40:/3.0k"

250V 6.3A

4-Pole Output 17W / RC4V17

1.5µF ✕440V

MSFBC20A76 DC12V

(L, N, ;) 250V 20A

(M1, M2) 250V 10A

Liquid pipe thermistor

Gas pipe thermistor

Fan motor capacitor

Linear expansion valve

PKFY-P20VAM-A PKFY-P25VAM-A

Room temperature

thermistor

Fuse

(Indoor controller board)

Fan motor

(with thermal fuse)

Vane motor

(with limit switch)

Power supply terminal

block

Transmission terminal

block

DC12V Stepping motor drive

Port [3.2 (0~2000pulse) EDM-402ME

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OUTLINES AND DIMENSIONS

Unit : mm

783

CBA

25.513

Air intake dimension

Air outlet dimension

Drain pipe length

Gas pipe

Detail of Terminal block

Terminal block for transmission

Terminal block for

transmission

Terminal block for

power supply

Address board

Terminal block for power supply

Knock out hole for

right - hand side piping

Knock out hole

for left - hand

side piping

Knock out hole

for under piping

Liquid pipe

815

630 695

660

450

520

45 91.5 10 34

2.5

2.5 16

450

R15

R12

24.4

116

110

146

295

21.5

247.5

150

2.5 60

Detail of knock out hole (A B C)

Secondary

Primary

Knock out hole

for the remote

controller wiring

Knock out hole for the

remote controller wiring

: In case of connecting MA remote controller, use the

cable with the connector attached to the indoor unit.

Please connect the cable with the connector with the

lead wire and connector (Relay connector) for the

MAremote controller of indoor controller board.

: There is no terminal board for MAremote controller.

Air intake dimension

PKFY-P20VAM-A

PKFY-P25VAM-A

159

407.5

328328

298

235

205

175

170

298

407.5

168

135

125

110

27.5

113

128

295

260

225

190

180

159

155

120

44 50

133

122.5

97.5

47.5

22.5

102.5

124

4-4.5✕35

4-4.5✕40

4-4.5✕37

4-11✕20

8- 4.3

72.5

Air intake dimension

Air intake Installation plate

Knock out hole

Installation space

100 or more

20 or more

130 or more

Address board

Drain pipe

Liquid pipe Flare connection 1/4F

Flare connection 1/2F

Gas pipe

Refrigerant

pipe

Address board is protected by

the plastic cover.

For the setting, remark 1-screw

using the screw driver.

Installation plate

Air outlet

angle

Air outlet

dimension

Air outlet direction

Detail of

address board

Dip switch

Terminal block

158

70.3

37.4

4- 9

12- 2.8 87- 5.1 65

Note1. For the installation, be sure to leave some space in case there

is fringe at edge of the ceiling.

Note2. Use the M10 or W3/8 bolt for the installation plate.

Note3. Refer for the specification table it below .

Connection inner dimension [16

Lotary switch(part No.)

Lotary switch(self address)

54 or more for left

or left back piping

Unit transplant parts

pipe hole

Position detail of the tapping screw and bats at pipe intake

Center of gravity hole for installation

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5 WIRING DIAGRAM

to the connector . (Remote controller wire is non-polar.)

TB5

TB2

TO NEXT

INDOOR UNIT

PULL

BOX

FUSE

(15A)

~/N 220V 60Hz

~/N 220-230-240V 50Hz

BREAKER

(15A)

POWER SUPPLY

GRN/YLW

ORN

PKFY-P20VAM

Models

OFF

ON Models SW2

<w1>

SW2

PKFY-P25VAM

4321 4321

OFF

Mark

LED1

LED2

Meaning

Main power supply

Function

Power supply for

MA-Remote controller

LED on indoor board for service

Main power supply(Indoor unit:220-230-240V)

power on lamp is lit

Power supply for MA-Remote controller

on lamp is lit

3.In case of using M-NET, please connect to TB5.(Transmission line is non-polar.)

In case of connecting MA-remote controller, please connect MA remote controller cable in an accessorie2.

CN35P

MICON

BOARD

(BLU)

CN53P

MICON

BOARD

(RED)

(BLU)

(RED)

POWER BOARD

CN53M

CN35M

CN43

ADDRESS

(RED)

ADDRESS

CN82

SW5

220V 240V

3RD

DIGIT 2ND

DIGIT 1ST

DIGIT CONNECTION

NO.

See fig: w1

(WHT)

CENTRALLY

CONTROL (GRN)

REMOTE

INDICATION (RED)

ADDRESS (RED)

ADDRESS (BLU) CN20

INTAKE

(RED)

(BLU)

(GRN)

(RED)

BLU

RED

BLK

RED

WHT BLU

BLU

M-NET REMOTE CONTROLLER

TO OUTDOOR UNIT

BC CONTROLLER

CONTROLLER

TO MA-REMOTE

LIQUID

(WHT)

(BLK)

GAS

(GRN)

PNK

YLW

ORN

BLU

RED

SWITCH

(WHT)

RED

WHT

YLW

ORN

BLU

BRN

1. Note

The setting of the SW2 dip switches differs in the capacity. For the detail,refer to the fig: w1.

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

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

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.

block

Terminal

Switch

Circuit board

Power supply

Transmission

Address board

Mode selection

Address setting 1st digit

Connection No.

Address setting 2nd digit

Name

Voltage selection

Vane motorMV

Fan motor

(0:/15T,25:/5.4T)TB5

TB2

SW14<A.B>

SW12<A.B>

SW11<A.B>

SW1<A.B>

A.B

Pipe temperature,detection/Gas

Capacitor(fan motor)C1

TH23 Thermistor

SW3

SW2 Switch

CN52

CN51

CN41

CN32 Indoor controller board

NameSymbol

M.B

Legend

Connector Remote switch

HA terminal-A

Centrally control

Remote indication

Mode selection

Capacity code

P.B Indoor power board

Symbol Name Symbol

ZNR Varistor

Fuse (6.3A)FUSE Fan phase controlF.C

(0:/15T,25:/5.4T)

Pipe temperature,detection/liquid

(0:/15T,25:/5.4T)

Room temperature,detection

Thermistor

TH21

TH22 Linear expansion valveLEV

SW5<A.B>

CN5V

(BLU) CN41

HA REMOTE

CN32 CN34 CN29

LEV

CN60

CN3A

CN81CN42

CN52CN51

12345678910

SW3

0FF

1234

SW2

LED2

M.B

CN21

CN2M

M-NET

FAN

CND

FUSE

250V

6.3A

OFF 12345678910

SW1

SW12 SW11 SW14

A.B

00 0

LED1

TH22TH23 TH21

M1M2

DC24-30V

DC8.7-13V

{

P.B

ZNR

F.C

{

LEV 6

654321 12345 4321 123 123 1 2 21

32145 32145 4123 612345 78 31 12

13245

123

321

12 146 13

PKFY-P20VAM-A

PKFY-P25VAM-A

OC254---1.qxp 2/19/01 11:15 AM Page 10

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