Mitsubishi Electric PUY-SP42VKA Manuale utente

SERVICE MANUAL

SPLIT-TYPE, AIR CONDITIONERS

No. OCH642

INDOOR UNIT CONTENTS

1. REFERENCE MANUAL .................................. 2

2. SAFETY PRECAUTION .................................. 3

3. PARTS NAMES AND FUNCTIONS ................ 4

4. SPECIFICATIONS ........................................... 9

5. NOISE CRITERION CURVES ....................... 11

6. OUTLINES AND DIMENSIONS..................... 12

7. WIRING DIAGRAM

.............................................

8. REFRIGERANT SYSTEM DIAGRAM

.............

9. TROUBLESHOOTING................................... 17

10. DISASSEMBLY PROCEDURE...................... 32

October 2016

Note:

• This manual describes ser-

vice data of the indoor units

only .

• RoHS compliant products

have <G> mark on the

spec name plate.

PARTS CATALOG (OCB642)

Model name

indication

WIRED REMOTE

CONTROLLER

WIRELESS REMOTE

CONTROLLER

ON/OFF TEMP

ON/OFF

TEMP.

Series PCY

Indoor unit

[Model Name]

PCY-SP18KA

PCY-SP24KA

PCY-SP30KA

PCY-SP36KA

PCY-SP42KA

PCY-SP48KA

[Service Ref.]

PCY-SP18KA.TH

PCY-SP24KA.TH

PCY-SP30KA.TH

PCY-SP36KA.TH

PCY-SP42KA.TH

PCY-SP48KA.TH

(Option) (Option)

1-1. OUTDOOR UNIT’S SERVICE MANUAL

1-2. TECHNICAL DATA BOOK

REFERENCE MANUAL

Service Ref Service Manual No.

SUY-SA18/24/30/36VA.TH OCH648

OCB648

PUY-SP42/48VKA.TH(-D/-N)

PUY-SP36/42/48YKA.TH(-D/-N)

OCH644

OCB644

Series (Outdoor unit) Data Book No.

SUY-SA▪VA.TH OCS40

PUY-SP▪VKA.TH

PUY-SP▪YKA.TH OCS41

OCH642

SAFETY PRECAUTION

Cautions for units utilising refrigerant R410A

2-2. CAUTIONS RELATED TO NEW REFRIGERANT

Use new refrigerant pipes.

Make sure that the inside and outside of refrige-

rant piping is clean and it has no contaminants

such as sulfur, oxides, dirt, shaving particles, etc,

which are hazard to refrigerant cycle.

In addition, use pipes with specified thickness.

Store the piping indoors, and keep both ends of

the piping sealed until just before brazing.

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

The refrigerant oil applied to flare and flange

connections must be ester oil, ether oil or

alkylbenzene oil in a small amount.

In case of using the existing pipes for R22, be careful with

the following.

· Change flare nut to the one provided with this product.

Use a newly flared pipe.

· Avoid using thin pipes.

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 enters 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

Contamination inside refrigerant piping can cause deterio-

ration of refrigerant oil, etc.

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

cause deterioration of refrigerant oil or malfunction of com-

pressor.

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

ration 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.

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.

2-1. ALWAYS OBSERVE FOR SAFETY

Before obtaining access to terminal, all supply

circuits must be disconnected.

OCH642

[3] Service tools

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

Electronic weighing scale

Unit

3-1. INDOOR UNIT

PARTS NAMES AND FUNCTIONS

Air outlet

Louver

Vane

Air intake

Filter

(Inside of Air intake)

No. Tool name 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 —

[1] Cautions for service

(1) Perform service after recovering 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) If moisture or foreign matter might have entered the refrigerant piping during the servise, ensure to remove them.

[2] Additional refrigerant charge

When charging directly from cylinder

(1) Check that cylinder for R410A on the market is syphon type.

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

OCH642

SPECIFICATIONS

Single phase, 50Hz, 220-240 V/Single phase, 60Hz, 220 V

Munsell 6.4Y 8.9/0.4

Plate fin coil

Sirocco fan (direct) × 3

0.095

16-17-18-20

0 (direct blow)

Remote controller & built-in

34-36-38-40

1,280

680

230

Cooling

0.07

0.61

PCY-SP18KA.TH

K/min

dB (A)

Service Ref.

Mode

Power supply(phase, cycle, voltage)

Input

Running current

External finish

Heat exchanger

Fan Fan(drive) × No.

Fan motor output

Airflow(Low-Medium2-Medium1-High)

External static pressure

Operation control & Thermostat

Noise level(Low-Medium2-Medium1-High)

Field drain pipe O.D.

Dimensions

Weight

INDOOR UNIT

4-1. SPECIFICATIONS

Single phase, 50Hz, 220-240 V/Single phase, 60Hz, 220 V

Munsell 6.4Y 8.9/0.4

Plate fin coil

Sirocco fan (direct) × 3

0.095

16-18-20-22

0(direct blow)

Remote controller & built-in

34-36-40-42

1,280

680

230

Cooling

0.08

0.72

PCY-SP24KA.TH

K/min

dB (A)

Service Ref.

Mode

Power supply(phase, cycle, voltage)

Input

Running current

External finish

Heat exchanger

Fan Fan(drive) × No.

Fan motor output

Airflow(Low-Medium2-Medium1-High)

External static pressure

Operation control & Thermostat

Noise level(Low-Medium2-Medium1-High)

Field drain pipe O.D.

Dimensions

Weight

INDOOR UNIT

Single phase, 50Hz, 220-240 V/Single phase, 60Hz, 220 V

Munsell 6.4Y 8.9/0.4

Plate fin coil

Sirocco fan (direct) × 4

0.160

24-26-28-30

0(direct blow)

Remote controller & built-in

39-41-43-45

1,600

680

230

Cooling

0.11

0.97

PCY-SP30KA.TH

K/min

dB (A)

Service Ref.

Mode

Power supply(phase, cycle, voltage)

Input

Running current

External finish

Heat exchanger

Fan Fan(drive) × No.

Fan motor output

Airflow(Low-Medium2-Medium1-High)

External static pressure

Operation control & Thermostat

Noise level(Low-Medium2-Medium1-High)

Field drain pipe O.D.

Dimensions

Weight

INDOOR UNIT

OCH642

Single phase, 50Hz, 220-240 V/Single phase, 60Hz, 220 V

Munsell 6.4Y 8.9/0.4

Plate fin coil

Sirocco fan (direct) × 4

0.160

27-29-32-34

0(direct blow)

Remote controller & built-in

42-44-46-48

1,600

680

230

Cooling

0.16

1.35

PCY-SP36/42/48KA.TH

K/min

dB (A)

Service Ref.

Mode

Power supply(phase, cycle, voltage)

Input

Running current

External finish

Heat exchanger

Fan Fan(drive) × No.

Fan motor output

Airflow(Low-Medium2-Medium1-High)

External static pressure

Operation control & Thermostat

Noise level(Low-Medium2-Medium1-High)

Field drain pipe O.D.

Dimensions

Weight

INDOOR UNIT

PCY-SP18KA.TH

0 1 2 3 4

-50

-100

-150

-200

-250

-300

Static pressure[Pa]

Airflow rate[m³/min]

0 1 2 3 4

-50

-100

-150

-200

-250

-300

Static pressure[Pa]

Airflow rate[m³/min]

0 1 2 3 4

■

PCY-SP24KA.TH PCY-SP36KA.TH

PCY-SP30KA.TH

■

PCY-SP48KA.TH

PCY-SP42KA.TH

How to read curves

4-2. FRESH AIR INTAKE AMOUNT & STATIC PRESSURE CHARACTERISTICS

1Curve in the

graphs

Duct characteristics

at site

E C

A D

Q…Designed amount of fresh air intake

A…Static pressure loss of fresh air

intake duct system with airflow

amount Q <Pa>

B…

Forced static pressure at air conditioner

inlet with airflow amount Q

<Pa>

C…Static pressure of booster fan with

airflow amount Q <Pa>

D…Static pressure loss increase amount

of fresh air intake duct system for

airflow amount Q <Pa>

E…Static pressure of indoor unit with

airflow amount Q <Pa>

Qa…Estimated amount of fresh air

intake without D <m3/min>

OCH642

(Drainage)

When drain socket

is installed

246

When drain socket

is installed

233

Air intake

Knockout hole for upper drain pipe arrangement

Knockout hole for fresh air intake ø100

Knockout hole for wiring arrangement 2-ø26

Drainage pipe connection(26mmI.D.)

Drainage pipe connection(for the left arrangement)

Knockout hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

Refrigerant-pipe connection(liquid pipe side/flared connection)

NOTES

1. Use M10 or W3/8 screw for anchor bolt.

2. Please be sure when installing the

drain pump (option parts), refrigerant pipe

will be only upper drain pipe arrangement.

Air outlet

233

Electrical box

When electrical box

is pulled down

Electrical box

In case of the rear pipe arrangement, make sure to

remove the shaded portions from the independent piece.

Then put the independent piece back in initial position.

(The heat exchanger might be clogged because of dust)

246

A B C D

184 203 6.35 12.7

180 200 9.52 15.88

236

150

62140

1237(Suspension bolt pitch)

320

680

84 88

195

230

254

476

680

182 85

1198

8 48

260

85 86 2

126

121

138

190 1

120°

1280 22

1173

124 76

46 190

387461

514

ø125

[FRONT VIEW]

Ceiling

(Drainage)

PCY-SP18KA.TH

PCY-SP24KA.TH

(gas [D)

(liquid [C)

(71)

500 or more

250

300

1280

Less than 680

270

For high

attachment

Obstacle

Rear wall

Ceiling

Less than

or more

(Gap to ceiling)

2500mm or more from floor

Allowing clearances

PCY-SP18KA.TH

PCY-SP24KA.TH

Unit: mm

OUTLINES AND DIMENSIONS6

OCH642

1313

(Drainage)

When drain socket

is installed

246

When drain socket

is installed

233

Knockout hole for upper drain pipe arrangement

Knockout hole for fresh air intake ø100

Knockout hole for wiring arrangement 2-ø26

Drainage pipe connection(26mmI.D.)

Drainage pipe connection(for the left arrangement)

Knockout hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

Refrigerant-pipe connection(liquid pipe side/flared connection)

Ceiling

[FRONT VIEW]

Electrical box

When electrical box

is pulled down

NOTES

1. Use M10 or W3/8 screw for anchor bolt.

2. Please be sure when installing the

drain pump (option parts), refrigerant pipe

will be only upper drain pipe arrangement.

In case of the rear pipe arrangement, make sure to

remove the shaded portions from the independent piece.

Then put the independent piece back in initial position.

(The heat exchanger might be clogged because of dust)

246

180

200

(Drainage)

(gas ø15.88)

(liquid ø9.52)

236

150

62140

1557

320

680

84 88

195

230

233

254

476

680

182 85

1518

848

260

85 86 2

126

121

138

190 1

120°

1600 22

1493

124 76

190

387

461

514

ø125

Electrical box

Air outlet

Air intake

(Suspension bolt pitch)

1600

270 300

500 or more

250

Ceiling

Obstacle

For high

attachment

Less than 680

Rear wall

or more

Less than

(Gap to ceiling)

2500mm or more from floor

Allowing clearances

Unit: mm

PCY-SP30KA.TH

PCY-SP36KA.TH

PCY-SP42KA.TH

PCY-SP48KA.TH

OCH642

WIRED REMOTE CONTROLLER Unit: mm

PAR-21MAA PAR-32MAA

(Option)

130

12083.5

19.5 19

120

83.5

159.3

WIRELESS REMOTE CONTROLLER (Option)

OCH642

1515

PCY-SP18KA.TH PCY-SP24KA.TH PCY-SP30KA.TH

PCY-SP36KA.TH PCY-SP42KA.TH PCY-SP48KA.TH

WIRING DIAGRAM7

<Table 2>SW2(CAPACITY CODE)

Manufacture/Service Manufacture/Service

MODELS

SW2

PCY-SP36KA

MODELS

OFF

12345

PCY-SP18KA

OFF

12345

PCY-SP42KA

OFF

12345

PCY-SP24KA

OFF

12345

PCY-SP48KA

OFF

12345

PCY-SP30KA

OFF

12345

SW1(MODEL SELECTION)

SW1

OFF

12345

NOTE: Be sure to turn off the source power

and then disconnect fan motor connector.

(Failure to do so will cause trouble in Fan motor)

Manufacture/Service

1.SymboIs used in wiring diagram above are, :Connector, :Terminal (block).

2.Indoor and outdoor connecting wires are made with polarities, make wiring matching terminal

numbers (S1, S2, S3).

3.Since the outdoor side electric wiring may change, be sure to check the outdoor unit electric

wiring for servicing.

4.This diagram shows the wiring of indoor and outdoor connecting wires.(specification of 220 - 240 V),

adopting superimposed system of power and signal.

Notes:

CN4F

(WH)

When attaching

drain pump

(option part),

remove the jumper

connector CN4F

and fit the drain

float switch (FS).

When attaching

drain pump

(option part)

1 4

SYMBOL SYMBOLNAME NAME

I.B

R.B

INDOOR CONTROLLER BOARD

FUSE (T6.3AL250V)

CONNECTOR (LOSSNAY)

CONNECTOR (REMOTE SWITCH)

CONNECTOR (HA TERMINAL-A)

CONNECTOR (CENTRALLY CONTROL)

POWER SUPPLY (I.B)

POWER SUPPLY (R.B)

TRANSMISSION (INDOOR-OUTDOOR)

RELAY (DRAIN PUMP)

WIRED REMOTE CONTROLLER BOARD

SWITCH (MODEL SELECTION)

See table 1

SWITCH (CAPACITY CODE)

See table 2

CONNECTOR (EMERGENCY OPERATION)

FAN MOTOR

VANE MOTOR

DRAIN PUMP

DRAIN FLOAT SWITCH

TERMINAL BLOCK (

INDOOR/OUTDOOR CONNECTING LINE

)

TERMINAL BLOCK (REMOTE CONTROLLER

TRANSMISSION LINE)

ROOM TEMP. THERMISTOR

(0°C/15kΩ, 25°C/5.4kΩ DETECT)

PIPE TEMP. THERMISTOR/LIQUID

(0°C/15kΩ, 25°C/5.4kΩ DETECT)

COND./EVA. TEMP. THERMISTOR

(0°C/15kΩ, 25°C/5.4kΩ DETECT)

FUSE

CN2L

CN32

CN41

CN51

TB4

LED1

TB5,TB6

LED2

TH1

LED3

TH2

SW1

TH5

SW2

SWE

[LEGEND]

W.B

LED1

SW1

SW2

OPTION PARTS

PCB FOR WIRELESS REMOTE CONTROLLER

RECEIVING UNIT

BUZZER

LED (OPERATION INDICATION : GREEN)

EMERGENCY OPERATION (FAN)

EMERGENCY OPERATION (COOL)

CN3C

(BU)

1 9

5 1

4 1

CN2L

ON OFF

SWE

J42J41

SW2SW1

LED3 LED2 LED1

LED2

LED1

SW2

SW1

CNB

tº tº tº

TH2 TH5 TH1

W.B

I.B

1 4

2 1

1 5

Refer to tables 1 and 2

TB4

TO OUTDOOR

UNIT

1 3 5

CNP

(BU)

CN01

(BK)

7 4 1

CN22

(BU)

CN90

(WH)

CNV

(WH)

Pair No.

CNMF

(

WH)

CN20

(RD)

CN4F

(WH)

CN105 CN44

(WH)

CN32

(WH)

CN51(WH)

CN41(WH)

FUSE

+–

(OPTION PART)

2R.B

TB5

TRANSMISSION

WIRES

DC12V

TB6

The black square(

■)

indicates a switch

position.

OCH642

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