Mitsubishi MSZ-A09YV-E1, MSZ-A12YV-E1 Service Manual

SERVICE MANUAL

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

Wireless type Models

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(WH)

MSZ-A09YV MSZ-A12YV -

No. OB327

Indication of model name

MSZ-A09YV MSZ-A12YV -

NOTE:

This service manual describes technical data of the indoor units.

•Refer to the service manual OB328 when MSZ-A09YV- or MSZ-A12YV- is connected with MUZ-A09YV- , MUZ-A12YV- , MUZ-A09YVH- or MUZ-A12YVH- .

•Refer to the service manual OB319 when MSZ-A09YV- or MSZ-A12YV- is connected with MXZ-A18WV- , MXZ-A26WV- or MXZ-A32WV- as multi system units.

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CONTENTS

1. PART NAMES AND FUNCTIONS······················2

2. SPECIFICATION·················································4

3. NOISE CRITERIA CURVES·······························5

4. OUTLINES AND DIMENSIONS·························6

5. WIRING DIAGRAM ············································7

6. REFRIGERANT SYSTEM DIAGRAM················7

7. SERVICE FUNCTIONS ······································8

8. TROUBLESHOOTING······································10

9. DISASSEMBLY INSTRUCTIONS ····················19

10. PARTS LIST······················································21

11. OPTIONAL PARTS···········································23

E1E1

E1E1E1E1

E1E1

E1E1E1

1

1 2 3 4 5 6 7

Installation plate Installation plate fixing screw 4 o 25 mm Remote controller holder Fixing screw for 3 3.5 o 1.6 mm (Black) Battery (AAA) for remote controller Wireless remote controller Felt tape (Used for left or left-rear piping)

MSZ-A09YV -

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MSZ-A12YV -

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1 5 1 2 2 1 1

PART NAMES AND FUNCTIONS

INDOOR UNIT

MSZ-A09YV MSZ-A12YV -

Air cleaning filter (white bellows type)

Heat exchanger

Catechin air filter (With deodorizer)

Air outlet

Vertical vanes Line flow fan

Horizontal vane

Operation section

(When the front panel is opened)

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Panel

Front panel Air inlet

to Breaker

Power supply cord

Remote control receiving section

Remote controller

Display section

ACCESSORIES

INDOOR UNIT

Emergency operation switch

Operation indicator lamp

Remote control receiving section

2

ON/OFF

TOO

COOL

PM

AM

TOO

WARM

ON/OFF

FAN

TOO

WARM

TOO

COOL

VANE

MODE

ECONO COOL

STOP

START

HR.

MIN.

AMPM

CLOCK

˚C

AM

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

MSZ-A09YV MSZ-A12YV -

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3

1.5+ 440V 250V 3.15A

93:5A 250V

MSBPC20 12V 250"

ERZV10D471

S201DH1Y

5P

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-A09YV -

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MSZ-A12YV -

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(C11)

(F11)

(F12)

(MV)

(NR11)

(SR141)

(TB)

(52C)

2

MSZ-A09YV -

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MSZ-A12YV -

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Indoor model

Function

Power supply

Single phase

230V,50Hz

10

0.17 35 —

0.17

RC4V19-LA

WHT-BLK 413 BLK-RED 334 815O278O244

9 5

3 10 10 10

KG04A

Cooling

504/360

W

/222

W

88

37/29W/21

W

1,010/770W/540

W

Heating

564/402

W

/246

W

94

38/30W/21

W

1,110/840W/580

W

Single phase

230V,50Hz

10

0.19 40 —

0.19

RC4V19-KA

WHT-BLK 316 BLK-RED 299 815O278O244

10

5

3 10 10 10

KG04A

Cooling

630/462

W

/288

W

95

39/31W/22

W

1,030/800W/570

W

Heating

642/474W/312

W

94

38/30

W

/22

W

1,050/820W/600

W

Air flow

(High/Med.W/LowW) Power outlet Running current ✽1 Power input Rated frequency 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 A

W

A(kW)

%

A

"

mm

kg

dB(A)

rpm

k" k" k"

Electrical

data

Fan

motor

Special

remarks

Capacity

SPECIFICATION

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 w Reference value

✽1 Measured under rated operating frequency.

Specifications and rating conditions of main electric parts

4

3

90

80

70

60

50

40

30

20

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

37 38

SPL(dB(A))

LINE

High

FAN SPEED

HEATING

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

NOISE CRITERIA CURVES

MSZ-A09YV -

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MSZ-A12YV -

Test conditions, Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:

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

90

80

70

60

50

40

30

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FAN SPEED

High

FUNCTION

COOLING HEATING

SPL(dB(A))

39 38

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

APPROXIMATE

20

THRESHOLD OF HEARING FOR CONTINUOUS

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

NOISE

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

INDOORUNIT

WALL

1m

0.8m

MICROPHONE

NC-20

5

4

OUTLINES AND DIMENSIONS

MSZ-A09YV -

INDOOR UNIT

278

60

58

162

Wireless remote controller

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81.5

606

783

815

149

19

Power supply cord Lead to right 1.0m Lead to left 0.3m

Installation plate

Indoor unit

81.5

41

30

Air out

242 5

Air in

7 or more

244

326326

Installation plate

Liquid line Gas line

{

Insulation

90

110

Drain hose (Connected part O,D)

Insulation

Unit : mm

133.5

231.5

42

2.5

81.5

Wall hole

[6.35-0.5m

[9.52-0.43m

[37 O.D

[21 I.D

[16

[28

4.5

271

[65

MSZ-A12YV -

INDOOR UNIT

278

60

58

162

Wireless remote controller

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783

815

606

19

Installation plate

Indoor unit

41

149

Power supply cord Lead to right 1.0m Lead to left 0.3m

30

Air out

242 Air in

7 or more

244

326326

5

Installation plate

Liquid line Gas line

{

Insulation

90

110

Drain hose (Connected part O,D)

Insulation

Unit : mm

161.5161.5

218.5

42

2.5

81.581.5 Wall hole [65

[6.35-0.5m

[9.52-0.43m

[37 O.D

[21 I.D

[16

[28

17.5

258

6

5

SYMBOL

C11

F11 F12

MF

MV

SYMBOL

NR11

RT11 RT12 RT13

SR141

SYMBOL

SR142

T11

TB

52C

NAME INDOOR FAN CAPACITOR FUSE (3.15A) THERMAL FUSE (93:) INDOOR FAN MOTOR (INNER FUSE) VANE MOTOR

NAME VARISTOR ROOM TEMPERATURE THERMIST OR 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

MF

1 2 3 4 5 6

3

SR141 SR142

5

3

1

C11

RT13 RT12

CN

112

CN 111

CN 121

151

CN

109CN125

CN

1R1

CN

MV

52

32

5

RT11

CN211

NR11

ELECTRONIC CONTROL P.C. BOARD

F11

T11

230V~

BRN

TB

L

3

N

2

RED

WHT

BLU

F12

BLU

1 2

BLU

1

2

3

CN201

3

4

52C

12V

TO OUTDOOR UNIT CONNECTING

L 3 N 2

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

PE

WIRING DIAGRAM

MSZ-A09YV MSZ-A12YV -

INDOOR UNIT

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MODELS WIRING DIAGRAM

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

6

MSZ-A09YV -

INDOOR UNIT

REFRIGERANT SYSTEM DIAGRAM

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Refrigerant pipe [9.52 (with heat insulator)

MSZ-A12YV -

INDOOR UNIT

Indoor coil

Indoor heat exchanger

Room temperature thermistor RT11

Refrigerant flow in cooling Refrigerant flow in heating

thermistor RT12(main)

Indoor coil thermistor RT13(sub)

Flared connection

Refrigerant pipe [6.35 (with heat insulator)

Indoor heat exchanger

Room temperature thermistor RT11

7

Indoor coil thermistor RT13(sub)

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Refrigerant pipe [9.52 (with heat insulator)

Indoor coil thermistor RT12(main)

Flared connection

Refrigerant pipe [6.35 (with heat insulator)

Unit:mm

7

SERVICE FUNCTIONS

MSZ-A09YV MSZ-A12YV -

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7-1. 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 page 18.) 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.)

7-2. 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.

How to modify the remote controller P.C. board

Remove batteries before modification. The board has a print as shown below :

Remote controller model : KG04A

J2

NOTE : For remodelling, take out

the batteries and press the OPERATE/STOP(ON/OFF) button twice or 3 times at first. After finish remodelling, put back the batteries then press the RESET button.

J1

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

1. After modification, press the RESET button.

Table 1

1 unit operation No. 1 unit No. 2 unit No. 3 unit No. 4 unit

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.

No modification

– – –

2 units operation

Same as at left

Solder J1

– –

3 units operation

Same as at left Same as at left

Solder J2

–

4 units operation

Same as at left Same as at left Same as at left

Solder both J1 and J2

7-3. 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.

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