SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················6
3. SPECIFICATION·················································6
4. NOISE CRITERIA CURVES·······························7
5. OUTLINES AND DIMENSIONS ·························8
6. WIRING DIAGRAM ············································9
7. REFRIGERANT SYSTEM DIAGRAM··············10
8. PERFORMANCE CURVES······························11
9. SERVICE FUNCTIONS ····································22
10. TROUBLESHOOTING······································22
11. DISASSEMBLY INSTRUCTIONS·····················29
12. PARTS LIST······················································32
Wireless type
Models
MUH-GA20VB -
MUH-GA25VB -
MUH-GA35VB -
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No. OB387
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MUH-GA20VB -
MUH-GA25VB -
MUH-GA35VB -
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Indication of
model name
NOTE:
•This manual describes technical data of outdoor units.
•As for indoor units MSC-GA20/GA25/GA35VB - , refer to the service manual OB385.
•As for indoor units MSC-CA20/CA25/CA35VB - , refer to the service manual OB393.
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OB387-1.qxp 05.2.21 10:03 AM Page 1
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