Mitsubishi Electric MSZ-CA25VB Manual de usuario

SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGES ····································2

2. PART NAMES AND FUNCTIONS······················3

3. SPECIFICATION·················································5

4. NOISE CRITERIA CURVES·······························6

5. OUTLINES AND DIMENSIONS ·························7

6. WIRING DIAGRAM ············································8

7. REFRIGERANT SYSTEM DIAGRAM················8

8. SERVICE FUNCTIONS ······································9

9. TROUBLESHOOTING······································11

10. DISASSEMBLY INSTRUCTIONS·····················22

11. PARTS LIST······················································24

Wireless type

Models

MSZ-CA25VB - (WH)

MSZ-CA35VB - (WH)

No. OB390

SPLIT-TYPE, HEAT PUMPAIR CONDITIONERS

MSZ-CA25VB -

MSZ-CA35VB - E1

NOTE:

This service manual describes technical data of the indoor units.

•As for outdoor units MUZ-CA25VB- and MUZ-CA35VB- , refer to the service manual

OB391.

•As for outdoor units MXZ-A14WV- and MXZ-A18WV- , refer to the service manual

OB319. E1E1

E1E1

Indication of

model name

OB390--1qxp 05.2.9 11:27 Page 1

1TECHNICAL CHANGE

MSZ-A09YV - ➔MSZ-CA25VB -

MSZ-A12YV - ➔MSZ-CA35VB - E1E1

E1E1

1. Indication of capacity has been changed.(BTU➔kW)

2. Shape of front panel has been changed.(Dimension has been changed)

3. Indoor electronic control P.C. board has been changed.

OB390--1qxp 05.2.9 11:27 Page 2

2PART NAMES AND FUNCTIONS

ACCESSORIES

Installation plate

Installation plate fixing screw 4 o25 mm

Remote controller holder

Fixing screw for 33.5 o1.6 mm (Black)

Battery (AAA) for remote controller

Wireless remote controller

Felt tape (Used for left or left-rear piping)

Air cleaning filter

MSZ-CA25VB - E1

MSZ-CA35VB - E1

INDOOR UNIT

MSZ-CA25VB -

MSZ-CA35VB - E1

Emergency operation switch

Operation section

Horizontal vane

Air filter

Air outlet

Vertical vane

Air inlet

to Breaker

Remote control

receiving section

Remote controller

Display section

(When the front panel is opened)

Operation indicator lamp

Receiving section

Air cleaning filter

(White bellows type)

Power supply cord

Panel

Front panel

OB390--1qxp 05.2.9 11:27 Page 3

ON/OFF

TOO

COOL

TOO

WARM

ON/OFF

FAN

TOO

WARM TOO

COOL

VANE

MODE

ECONO COOL

STOP

START

HR.

MIN.

AMPM

CLOCK

˚C

RESET CLOCK

I FEEL

COOL

DRY

AUTO

HEAT

Open the front lid.

Signal transmitting section

Operation display section

OPERATE /STOP

(ON /OFF) button

TEMPERATURE buttons

OPERATION SELECT button

FAN SPEED CONTROL button

OFF-TIMER button

HR. button

MIN. button

(TIME SET button)

ON-TIMER button

RESET button

ECONO COOL button

VANE CONTROL button

CLOCK SET button

Indication of remote controller model

(back side)

MSZ-CA25VB -

MSZ-CA35VB - E1

OB390--1qxp 05.2.9 11:27 Page 4

1.5+ 440V

250V 3.15A

93:5A 250V

MSBPC20 12V 250"

ERZV10D471

S201DH1Y

JM1aN-ZTMP-DC12V

136:i3: 2A

INDOOR UNIT

Item Model

Indoor fan capacitor

Fuse

Thermal fuse

Vane motor

Varistor

Solid state relay

Terminal block

Contactor

Indoor fan motor thermal fuse

MSZ-CA25VB - E1 MSZ-CA35VB - E1

(C11)

(F11)

(F12)

(MV)

(NR11)

(SR141)

(TB)

(52C)

Specifications and rating conditions of main electric parts

3SPECIFICATION

MSZ-CA25VB - E1 MSZ-CA35VB - E1

Indoor model

Function

Power supply Single phase

230V,50Hz

0.17

—

0.17

RC4V19-LA

WHT-BLK 413

BLK-RED 334

815O278O217

KM04G

Cooling

504/360

/222

37/29

/21

930/730

/530

Heating

564/402

/246

38/30

/21

1,020/790

/570

Single phase

230V,50Hz

0.19

—

0.19

RC4V19-KA

WHT-BLK 316

BLK-RED 299

815O278O217

KM04G

Cooling

630/462

/288

39/31

/22

990/780

/560

Heating

642/474

/312

38/30

/22

1,000/790

/590

Air flow

(High/Med.W/LowW)

Power outlet

Running current ✽1

Power input ✽1

Auxiliary heater

Power factor ✽1

Fan motor current ✽1

Model

Winding

resistance(at20:)

Dimensions WOHOD

Weight

Air direction

Sound level

(High/Med.W/LowW)

Fan speed(High/Med.W/LowW)

Fan speed regulator

Thermistor RT11(at25:)

Thermistor RT12(at25:)

Thermistor RT13(at25:)

Remote controller model

K/h

A(kW)

dB(A)

rpm

Electrical

data

Fan

motor

Special

remarks

Capacity

NOTE : Test conditions are based on ISO 5151

Cooling : Indoor DB27:WB19:

Outdoor DB35:WB 24:

Heating : Indoor DB 20:WB15:

Outdoor DB 7:WB 6:

Refrigerant piping length (one way): 5m

wReference value

✽1 Measured under rated operating frequency.

OB390--1qxp 05.2.9 11:27 Page 5

NOISE CRITERIA CURVES

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions,

Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

COOLING

FUNCTION

SPL(dB(A)) LINE

High

FAN SPEED

HEATING

Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:

MSZ-CA25VB - E1

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

COOLING

FUNCTION

SPL(dB(A)) LINE

High

FAN SPEED

HEATING

Test conditions,

Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:

Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:

INDOORUNIT WALL

MICROPHONE

0.8m

MSZ-CA35VB - E1

OB390--1qxp 05.2.9 11:27 Page 6

5OUTLINES AND DIMENSIONS

MSZ-CA25VB - E1

MSC-CA35VB - E1

INDOOR UNIT

217

215

81.5

2.5

271

231.5

4.5

81.5 133.5

326326

159

7 or more

110

149

606

278

815

783

Wall hole [65

Indoor unit

Installation plate

Insulation [28

Drain hose [16

(Connected part O.D)

Air in

Air out

Power supply cord

Lead to right 1.0m

Lead to left 0.3m

Wireless remote controller

Liquid line [6.35-0.5m

Gas line [9.52-0.43m

Insulation [37 O.D

[21 I.D

{

217

215

218.5

258

81.581.5

2.5

17.5

161.5

326326

159

7 or more

110

149

606

278

815

783 Indoor unit

Installation plate

Wall hole [65

Installation plate

Insulation [28

Drain hose [16

(Connected part O.D)

Air in

Air out

Power supply cord

Lead to right 1.0m

Lead to left 0.3m

Wireless remote controller

Liquid line [6.35-0.5m

Gas line [9.52-0.43m

Insulation [37 O.D

[21 I.D

{

Unit: mm

OB390--1qxp 05.2.9 11:27 Page 7

WIRING DIAGRAM

REFRIGERANT SYSTEM DIAGRAM

MSZ-CA25VB - E1

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Indoor coil

thermistor

RT13(sub)

Flared connection

Refrigerant flow in cooling

Refrigerant flow in heating

Refrigerant pipe [9.52

(with heat insulator)

Refrigerant pipe

[6.35

(with heat insulator)

Indoor coil

thermistor

RT12(main)

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Indoor coil

thermistor

RT13(sub)

Flared connection

Refrigerant pipe [9.52

(with heat insulator)

Refrigerant pipe

[6.35

(with heat insulator)

Indoor coil

thermistor

RT12(main)

INDOOR UNIT

Unit:mm

INDOOR UNIT MODELS WIRING DIAGRAM

SYMBOL

C11

F11

F12

SYMBOL

NR11

RT11

RT12

RT13

SR141

SYMBOL

SR142

T11

52C

NAME

INDOOR FAN CAPACITOR

FUSE (3.15A)

THERMAL FUSE (93:)

INDOOR FAN MOTOR (INNER FUSE)

VANE MOTOR

NAME

VARISTOR

ROOM TEMPERATURE THERMISTOR

INDOOR COIL THERMISTOR (MAIN)

INDOOR COIL THERMISTOR (SUB)

SOLID STATE RELAY

NAME

SOLID STATE RELAY

TRANSFORMER

TERMINAL BLOCK

CONTACTOR

GRN/YLW

BLK

GRY

YLW

BRN

WHT

RED

SR141 SR142

C11

RT13

RT12

112

111

121

151

109

125

1R1

5 2 3 2

RT11

CN211

NR11

ELECTRONIC CONTROL P.C. BOARD

F11

T11

230V~

BRN

RED

WHT

BLU F12 BLU

BLU 1

2BLU 1

CN201 3

52C

12V

TO OUTDOOR

UNIT

CONNECTING

12V

TO OUTDOOR

FOR MXZ type

UNIT

CONNECTING REMOTE

CONTROLLER

POWER MONITOR

RECEIVER

SAFETY

DEVICE (FAN)

P.C. BOARD

LD103

GRN

CIRCUIT BREAKER

POWER

SUPPLY

CORD

~/N 230V

50Hz

BLU

GRN/YLW

NOTE:1. About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.

2. Use copper conductors only. (For field wiring)

3. Symbols below indicate.

/: Terminal block, : Connector

MSZ-CA25VB -

MSZ-CA35VB - E1

INDOOR UNIT

OB390--1qxp 05.2.9 11:27 Page 8

8SERVICE FUNCTIONS

8-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION

A maximum of 4 indoor units with wireless remote controllers can be used in a room.

In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be

modified according to the number of the indoor unit.

8-1. TIMER SHORT MODE

For service, set time can be shortened by short circuit of JPG and JPS the electronic control P.C. board.

The time will be shortened as follows. (Refer to 9-7.)

Set time : 1-minute ➔ 1-second

Set time : 3-minute ➔ 3-second (It takes 3 minutes for the compressor to start operation. However, the starting time is

shortened by short circuit of JPG and JPS.)

MSZ-CA25VB -

MSZ-CA35VB - E1

No. 1 unit

No. 2 unit

No. 3 unit

No. 4 unit

1 unit operation

No modification

–

2 units operation

Same as at left

Solder J1

–

3 units operation

Same as at left

Solder J2

–

4 units operation

Same as at left

Solder both J1 and J2

Table 1

How to set the remote controller exclusively for particular indoor unit.

After you turn the breaker ON, the first remote controller that sends the signal to the indoor unit will be regarded as the remote

controller for the indoor unit.

The indoor unit will only accepts the signal from the remote controller that has been assigned to the indoor unit once they are

set.

The setting will be cancelled if the breaker has turned off, or the power supply has shut down.

Please conduct the above setting once again after the power has restored.

How to modify the remote controller P.C. board

Remove batteries before modification.

The board has a print as shown below :

The P.C. board has the print “J1” and “J2”. Solder “J1” and “J2” according to the number of indoor unit as shown in Table

After modification, press RESET button.

NOTE : For remodelling, take out

the batteries and press

OPERATE/STOP(ON/OFF)

button twice or 3 times at

first.

After finish remodelling,

put back the batteries then

press RESET button.

Remote controller model : KM04G

8-3. AUTO RESTART FUNCTION

When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed

are memorized by the indoor electronic control P.C. board. The “AUTO RESTART FUNCTION” sets to work the moment

power has restored after power failure. Then, the unit will restart automatically.

However if the unit is operated in “I FEEL CONTROL” mode before power failure,

the operation is not memorized. In “I FEEL CONTROL” mode, the operation is decided by the initial room temperature.

OB390--1qxp 05.2.9 11:27 Page 9

NOTE:

• The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote

controller.

• If main power is turned OFF or a power failure occurs while AUTO START/STOP timer is active, the timer setting is can-

celled.

• If the unit has been off with the remote controller before power failure, the auto restart function does not works as the

power button of the remote controller is off.

• To prevent breaker off due to the rush of starting current, systematize other home appliance not to turn on at the same

time.

• When some air conditioners are connected to the same supply system, if they are operated before power failure, the

starting current of all the compressors may flow simultaneously at restart.

Therefore, the special counter-measures are required to prevent the main voltage-drop or the rush of the starting current

by adding to the system that allows the units to start one by one.

Operation

1If the main power has been cut, the operation settings remain.

2After the power is restored, the unit restarts automatically according to the memory. (However, it takes at least 3 minutes

for the compressor to start running.)

How to release “AUTO RESTART FUNCTION”

1Turn off the main power for the unit.

2Pull out the indoor electronic control P.C. board and the power monitor receiver P.C.board. (Refer to 10-1.2.)

3Solder the Jumper wire to JR07 on the indoor electronic control P.C.board. (Refer to 9-7.)

JR07

IC101

CN151

SW1

CN112

CN111

CN201

52C

C11

CN211

CN1V1

CN1R1CN121

OB390--1qxp 05.2.9 11:27 Page 10

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