SERVICE MANUAL
Wireless type
Models
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MUZ-A18YV -
MUZ-A24YV -
MUZ-A26YV -
E1
E1
E1
MUZ-A18YV -
MUZ-A24YV -
MUZ-A26YV -
E1
E1
E1
Indication of
model name
Revision E:
• ”Check of outdoor thermistors” has been corrected.
Please void OB346 REVISED EDITION-D.
CONTENTS
1. TECHNICAL CHANGES ····································3
2. PART NAMES AND FUNCTIONS······················6
3. SPECIFICATION·················································7
4. NOISE CRITERIA CURVES·····························10
5. OUTLINES AND DIMENSIONS························11
6. WIRING DIAGRAM ··········································12
7. REFRIGERANT SYSTEM DIAGRAM··············14
8. PERFORMANCE CURVES······························16
9. ACTUATOR CONTROL····································31
10. TROUBLESHOOTING······································32
11. DISASSEMBLY INSTRUCTIONS·····················46
12. PARTS LIST······················································50
NOTE:
This service manual describes technical data of the outdoor units.
•As for indoor units MSZ-A18YV - , MSZ-A24YV - and MSZ-A26YV - , refer to the
service manual OB345.
•As for indoor units MCFZ-A18WV - and MCFZ-A24WV - , refer to the service manual
OB344.
E1E1
E1E1E1
No. OB346
REVISED EDITION-E
OB346E --1qxp 07.2.8 6:53 PM Page 1
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