SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················5
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES ·······························6
5. OUTLINES AND DIMENSIONS ·························7
6. WIRING DIAGRAM ············································7
7. REFRIGERANT SYSTEM DIAGRAM ················8
8. PERFORMANCE CURVES ································9
9. MICROPROCESSOR CONTROL ····················20
10. SERVICE FUNCTIONS·····································22
11. TROUBLESHOOTING ······································22
12. DISASSEMBLY INSTRUCTIONS·····················29
13. PARTS LIST······················································32
Wireless type
Models
MUH-A07YV -
MUH-A09YV -
MUH-A12YV -
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No. OB331
HFC
utilized
R410A
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MUH-A07YV -
MUH-A09YV -
MUH-A12YV -
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Indication of
model name
NOTE:
•This manual describes technical data of outdoor units.
•As for indoor units MSC-A07/A09/A12YV -
, refer to the service manual OB329.
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