SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················6
3. INDOOR/OUTDOOR
CORRESPONDENCE TABLE ···························6
4. INDOOR UNITS COMBINATION ·······················9
5. SPECIFICATION···············································21
6. NOISE CRITERIA CURVES·····························23
7. OUTLINES AND DIMENSIONS ·······················24
8. WIRING DIAGRAM ··········································27
9. REFRIGERANT SYSTEM DIAGRAM··············30
10. PERFORMANCE CURVES······························33
11. MICROPROCESSOR CONTROL·····················47
12. TROUBLESHOOTING······································52
13. DISASSEMBLY INSTRUCTIONS·····················71
14. PARTS LIST······················································78
15. OPTIONAL PARTS···········································83
Inverter-controlled multi system type
Models
MXZ-A14WV -
MXZ-A18WV -
MXZ-A26WV -
MXZ-A32WV -
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E1
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No. OB319
REVISED EDITION-A
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MXZ-A18WV -
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Indication of model name
NOTE:
•This service manual describes technical data of outdoor units.
As for indoor units, refer to the service manual OB307 REVISED EDITION-C, OB321, OB327, OB329,
OB336 REVISED EDITION-A, OB345, OC302 or OC303.
Please void OB319.
Revision A:
●MXZ-A14WV - has been added.
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OB319--1.qxp 04.8.5 9:41 AM Page 1
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