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SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································4
4. OUTLINES AND DIMENSIONS ·························6
5. WIRING DIAGRAM ············································8
6. REFRIGERANT SYSTEM DIAGRAM················9
7. SERVICE FUNCTIONS ····································10
8. TROUBLESHOOTING······································11
9. DISASSEMBLY INSTRUCTIONS ····················25
10. PARTS LIST······················································30
10-1. PARTS LIST·············································30
10-2. RoHS PARTS LIST··································36
11. MICROPROCESSOR CONTROL·····················42
Wireless type
Models
MSZ-A09NA
MSZ-A12NA
MSZ-A15NA
MSZ-A17NA
MSZ-A24NA
MSY-A15NA
MSY-A17NA
MSY-A24NA
No. OB450
REVISED EDITION-A
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MSZ-A09NA MSY-A15NA
MSZ-A12NA MSY-A17NA
MSZ-A15NA
MSZ-A17NA
INDOOR UNIT
Outdoor unit service manual
MUZ-A·NA Series (OB451)
MXZ-A·NA Series (OB444)
NOTE:
This service manual describes technical data of the intdoor units.
RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the PARTS
LIST (RoHS compliant).
Revision A:
• PARTS LIST has been revised.
OB450-1.qxp 06.11.29 1:37 PM Page 1