SERVICE MANUAL
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. INDOOR /OUTDOOR
CORRESPONDENCE TABLE··········3
4. INDOOR UNITS COMBINATION ·······················4
5. SPECIFICATION·················································9
6. OUTLINES AND DIMENSIONS························11
7. WIRING DIAGRAM ··········································13
8. REFRIGERANT SYSTEM DIAGRAM··············15
9. PERFORMANCE CURVES······························20
10. MICROPROCESSOR CONTROL ····················30
11. TROUBLESHOOTING······································39
12. DISASSEMBLY INSTRUCTIONS·····················53
13. PARTS LIST······················································57
14. OPTIONAL PARTS ····································BACK
Inverter-controlled multi system
Models
MXZ-18NV -
MXZ-32NV -
MXZ-18NV -
MXZ-32NV -
E2
E2
E1
E1
No. OB185
REVISED EDITION C
This manual describes technical data of outdoor unit.
For indoor unit refer to the service manuals No.OB207 and OB196 REVISED EDITION A of corresponding
models.
Model indication
Revision:
●MXZ-18NV- and MXZ-18NV- have been added.
●Page layout has been changed.
●Performance curves has been modified.
●The graph of the outdoor low pressure in the HEAT
operation of the PERFORMANCE CURVE of MXZ-
32NV was deleted.
●Please void OB185 REVISED EDITION A and B.
E2E1
MXZ-32NV
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