SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 2
2. PART NAMES AND FUNCTIONS ····················· 3
3. SPECIFICATION ················································ 5
4. OUTLINES AND DIMENSIONS ························ 6
5. WIRING DIAGRAM ············································ 7
6. REFRIGERANT SYSTEM DIAGRAM ··············· 7
7. SERVICE FUNCTIONS ····································· 8
8. TROUBLESHOOTING ······································· 9
9. DISASSEMBLY INSTRUCTIONS ···················· 21
10. PARTS LIST ····················································· 24
10-1. PARTS LIST ············································· 24
10-2. RoHS PARTS LIST ·································· 27
11. MICROPROCESSOR CONTROL ···················· 30
Models
MS-A09WA
MS-A09WA -
1
MS-A12WA
MS-A12WA -
1
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the RoHS PARTS
LIST (RoHS compliant).
INDOOR UNIT
Outdoor unit service manual
MU-A•WA Series (OB449)
Revision C:
• TEST POINT DIAGRAM AND VOLTAGE has
been corrected. (8-7)
Please void OB448 REVISED EDITION-B.
No. OB448
REVISED EDITION-C
