SERVICE MANUAL
CONTENTS
1. FEATURES·························································2
2. PART NAMES AND FUNCTIONS······················4
3. SPECIFICATION·················································6
4. DATA···································································8
5. OUTLINES AND DIMENSIONS ·······················18
6. WIRING DIAGRAM ··········································20
7. REFRIGERANT SYSTEM DIAGRAM··············22
8. MICROPROCESSOR CONTROL ····················23
9. SERVICE FUNCTIONS ····································39
10. TROUBLESHOOTING······································41
11. DISASSEMBLY INSTRUCTIONS·····················61
12. PARTS LIST······················································68
13. OPTIONAL PARTS···········································74
Wireless type
Models
MSZ09UN (W) · MUZ09UN
MSZ12UN (W) · MUZ12UN
No. OB297
REVISED EDITION-A
The Slim Line.
From Mitsubishi Electric.
Remote
controller
TM
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MSZ09UN
INDOOR UNIT
MUZ09UN
MUZ12UN
OUTDOOR UNIT
Revision A:
● Conditions of operation frequency have been added.
Please void OB297.
OB297--1.qxp 04.2.4 4:19 PM Page 1
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