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SERVICE MANUAL

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

Wireless type
Models

MSZ-A09YV -

(WH)

MSZ-A12YV -

(WH)

No. OB327

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

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.

OB327 --1qxp 04.1.8 1:41 PM Page 1

Содержание MSZ-A09YV-E1

Страница 1: ... Models MSZ A09YV WH MSZ A12YV WH E1 E1 No OB327 SPLIT TYPE HEAT PUMP AIR CONDITIONERS Indication of model name MSZ A09YV MSZ A12YV E1 E1 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 co...

Страница 2: ...A09YV E1 MSZ A12YV E1 1 5 1 2 2 1 1 INDOOR UNIT INDOOR UNIT MSZ A09YV MSZ A12YV E1 E1 Emergency operation switch Line flow fan Catechin air filter With deodorizer Air outlet Vertical vanes Air inlet to Breaker Remote control receiving section Display section Air cleaning filter white bellows type Front panel Power supply cord Panel Heat exchanger Horizontal vane Operation section When the front pa...

Страница 3: ...e 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 E1 E1 ...

Страница 4: ...V 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 462W 288W 95 39 31W 22W 1 030 800W 570W Heating 642 474W 312W 94 38 30W 22W 1 050 820W 600W 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 S...

Страница 5: ...LINE High FAN SPEED HEATING Heating Dry bulb temperature 20 Wet bulb temperature 15 MSZ A09YV E1 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 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE COOLING FUNCTION 39 38 SPL dB A LINE High FAN SPEED HEATING Test con...

Страница 6: ...roller 162 19 58 81 5 81 5 41 2 5 42 271 231 5 4 5 81 5 133 5 326 326 Wall hole 65 Indoor unit Installation plate MSZ A12YV E1 Unit mm INDOOR UNIT 244 242 218 5 258 81 5 81 5 41 42 2 5 17 5 161 5 161 5 326 326 162 19 58 5 7 or more 90 110 30 149 606 278 60 815 783 Power supply cord Lead to right 1 0m Lead to left 0 3m Air out Indoor unit Installation plate Wall hole 65 Installation plate Insulatio...

Страница 7: ...5A 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 MF 1 2 3 4 5 6 3 SR141 SR142 5 3 1 C11 RT13 RT12 CN 112 CN 111 CN 121 151 CN 109 CN 125 CN 1R1 CN MV 5 2 3 2 5 RT11 CN211 NR11 ELECTRON...

Страница 8: ...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 R...

Страница 9: ...he 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 1 If the main power 230V AC has been cut the operation settings remain 2 After the power is restored the unit restarts automa...

Страница 10: ...air conditioner be sure to first turn off the remote controller to stop the main unit and then after confirming the horizontal vane is closed turn off the breaker and or disconnect the power plug 2 Be sure to turn OFF the power supply before removing the front panel the cabinet the top panel and the electronic control P C board 3 When removing the electronic control P C board hold the edge of the ...

Страница 11: ...Unit won t operate in case the total capacity of indoor units exceeds the capacity of outdoor units Do not connect indoor units beyond the outdoor unit capacity Operation indicator lamp flashes as shown in the figure below When you try to operate two or more indoor units with one outdoor unit simultaneously one for the cooling and the other for heating the operation mode of the indoor unit that op...

Страница 12: ... lamp 2 time flash Cause Indoor unit Trouble of room temp erature indoor coil thermistor Left lamp 3 time flash Cause Indoor unit Trouble of indoor fan motor Left lamp 5 time flash Cause Outdoor unit Outdoor power system abnormality Left lamp 6 time flash Cause Outdoor unit Trouble of thermistor in outdoor unit Left lamp 7 time flash Cause Outdoor unit Trouble of outdoor control system Refer to D ...

Страница 13: ... the nonvolatile memory of indoor electronic control P C board Outdoor unit does not operate Outdoor unit does not operate Replace the indoor electronic control P C board Left lamp flashes 5 time flash 2 5 second OFF Left lamp flashes 6 time flash 2 5 second OFF Outdoor unit does not operate Outdoor unit does not operate Outdoor unit does not operate 8 0 5 second ON 0 5 second OFF When the electri...

Страница 14: ...e the voltage power ON When fan revolved one time 0V 5V 0V Approx Normal BRN other one Abnormal Open or short circuit Measure the resistance between the terminals with a tester Part temperature 10 C 30 C Color of lead wire Color of lead wire BLK RED WHT GRY YLW BRN 240 260 Color of lead wire MAIN AUX FUSE RED YLW BRN ORN GRN ROTOR Check of indoor fan motor A When OPERATION INDICATOR lamp flashes 3...

Страница 15: ... control P C board and N on the terminal block with the tester Is resistance approx 0 Replace the fuse F12 No Yes Check of remote controller and receiver P C board B Indoor unit operates by pressing the EMERGENCY OPERATION switch but does not operate with the remote controller wCheck if the remote controller is exclusive for this air conditioner CN302 CN125 CN109 1 2 1 2 3 1 5 4 3 Remote controlle...

Страница 16: ...bove procedure allows OPERATION INDICATOR lamp to indicate the failure mode w2 Open circuit indoor terminal block N and 3 Check if there is amplitude of 5 to 20V DC between outdoor terminal block N and 3 for confirmation of serial signal and if there is 230V AC between 2 and N 1 Turn OFF the power supply 2 Disconnect the connector between the compressor and the transistor module 3 Turn ON the powe...

Страница 17: ...r of the horizontal vane locked to the indoor unit correctly Yes No Is there resistance 0 Relock the stopper of the horizontal vane to the indoor unit Refer to page 11 Yes Is the OPERATION INDICATOR lamp flashing Yes No No OK Turn ON the power supply To check the continuity of safety device measure the resistance of connector 1 3 connected to CN1R1 on the indoor electronic control P C board Turn O...

Страница 18: ...rt function Solder the Jumper wire to the JR07 Refer to page 9 CN302 Power monitor receiver P C board Power supply input 230V AC Varistor NR11 Fuse F11 250V AC 3 15A Room temperature thermistor RT11 Indoor coil thermistor RT12 MAIN RT13 SUB Timer short mode point JPG JPS Refer to page 8 Emergency operation switch Indoor fan motor 230V AC 5V DC 12V DC Safety device of fan by horizontal vane CN1R1 R...

Страница 19: ... receiver P C board NOTE In case of removing only indoor electronic control P C board work 3 is not necessary 1 Remove the panel Refer to 1 2 Remove the power monitor receiver P C board holder from the bottom of electrical box 3 Open the power monitor receiver P C board holder and remove the power monitor receiver P C board 4 Remove the screw of the electrical cover and the electrical cover 5 Remo...

Страница 20: ...r connector Vane motor connector Hooks of the motor band Hexagon socket set screw Screw of the lead cover 4 Removing the nozzle assembly and the vane motor 1 Remove the panel Refer to 1 2 Remove the electrical box Refer to 3 3 Pull out the drain hose from the nozzle assembly remove the nozzle assembly 4 Remove the screws of the vane motor disconnect the vane motor connector 5 Remove the vane motor...

Страница 21: ...02 838 426 E02 527 083 REMOTE CONTROLLER REMOTE CONTROLLER HOLDER 1 1 1 1 KG04A BOX WH BOX WH PANEL ASSEMBLY WH SCREW CAP FRONT PANEL WH CATCH CATECHIN AIR FILTER CATECHIN AIR FILTER AIR CLEANING FILTER CORNER BOX RIGHT INSTALLATION PLATE INSTALLATION PLATE 1 1 2 1 2 2 2 1 1 Including No 3 4 5 2PCS SET 2PCS SET MAC 1300FT 1 1 2 1 2 2 2 1 1 WH WH 10 1 INDOOR UNIT STRUCTURAL PARTS 10 2 ACCESSORY AND...

Страница 22: ...K SET POWER MONITOR RECEIVER P C BOARD ELECTRONIC CONTROL P C BOARD ELECTRONIC CONTROL P C BOARD VANE MOTOR ROOM TEMPERATURE THERMISTOR INDOOR FAN MOTOR INDOOR FAN MOTOR MOTOR BAND TERMINAL BLOCK FAN MOTOR RUBBER MOUNT FAN MOTOR RUBBER MOUNT INDOOR COIL THERMISTOR LINE FLOW FAN BEARING MOUNT BEARING MOUNT THERMAL FUSE 3 15A AUTO RESTART AUTO RESTART RC4V19 RC4V19 2PCS SET 2PCS SET 93 F11 NR11 NR12...

Страница 23: ...ER may reduce the air conditioner capacity or cause frost on the air outlet DO NOT reuse AIR CLEANING FILTER even if it is washed DO NOT remove or attach AIR CLEANING FILTER during unit operation MAC 1300FT Model Part No MSZ A09YV MSZ A12YV E1 E1 Air cleaning filter White bellows type QUICK CLEAN KIT You can sweep the surface of heat exchanger if you install the special made brush to your vacuum c...

Страница 24: ... 2 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN C C Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Jan 2004 No OB327 6 Made in Japan New publication effective Jan 2004 Specifications subject to change without notice ...

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