CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································3
4. NOISE CRITERIA CURVES ·······························5
5. OUTLINES AND DIMENSIONS ·························6
6. WIRING DIAGRAM ············································7
7. REFRIGERANT SYSTEM DIAGRAM ················8
8. PERFORMANCE CURVES ································9
9. ACTUATOR CONTROL····································19
10. SERVICE FUNCTIONS·····································20
11. TROUBLESHOOTING ······································20
12. DISASSEMBLY INSTRUCTIONS·····················27
13. PARTS LIST······················································30
14. RoHS PARTS LIST···········································32
HFC
utilized
R410A
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MUH-GA20VB
MUH-GA25VB
MUH-GA35VB
Wireless type
Models
MUH-GA20VB-
MUH-GA20VB-
MUH-GA25VB-
MUH-GA25VB-
MUH-GA35VB-
MUH-GA35VB-
E3
E1
E2
E1
E2
E1
SERVICE MANUAL
OUTDOOR UNIT
Indoor unit service manual
MSC-GA
•
VB Series (OB385)
MSC-CA
•
VB Series (OB393)
MSC-CB
•
VB Series (OB439)
No. OB387
REVISED EDITION-B
Please void OB387 REVISED EDITION-A.
Revision B:
●
MUH-GA35VB -
has been added.
E3
NOTE:
• This service manual describes technical data of outdoor units.
• RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the RoHS Parts List.
OB387B-1.qxp 07.5.23 2:47 PM Page 1
