SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································3
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. MICROPROCESSOR CONTROL ······················9
9. SERVICE FUNCTIONS ····································17
10. TROUBLESHOOTING······································19
11. DISASSEMBLY INSTRUCTIONS·····················26
12. PARTS LIST······················································28
Wireless type
Models
MSC-A07YV -
(WH)
MSC-A09YV -
(WH)
MSC-A12YV -
(WH)
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MSC-A07YV -
MSC-A09YV -
MSC-A12YV -
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No. OB329
SPLIT-TYPE, AIR CONDITIONERS
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
Indication of model name
NOTE:
•This manual describes technical data of indoor units.
•As for outdoor units MU-A07/A09/A12YV - , refer to the service manual OB330.
•As for outdoor units MUH-A07/A09/A12YV - , refer to the service manual OB331.
•As for outdoor units MUX-A10/A19/A20/A25/A26WV - , refer to the service manual OB307 REVISED
EDITION-A.
•As for outdoor units MUX-A22WV - , refer to the service manual OB318.
•As for outdoor units MXZ-A18/A26/A32WV - , refer to the service manual OB319.
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OB329-1.qxp 03.12.3 1:16 PM Page 1
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