SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. SPECIFICATION·················································4
4. OUTLINES AND DIMENSIONS ························ 5
5. WIRING DIAGRAM ············································6
6. REFRIGERANT SYSTEM DIAGRAM················7
7. PERFORMANCE CURVES································8
8. MICROPROCESSOR CONTROL ····················10
9. SERVICE FUNCTIONS ····································19
10. TROUBLESHOOTING······································21
11. DISASSEMBLY INSTRUCTIONS·····················30
12. PARTS LIST······················································34
13. OPTIONAL PARTS···········································37
Wireless type
Model
MSH-18NV -
(
WH
)
· MUH-18NV -
E4E4
No. OB229
REVISED EDITION-A
MSH-18NV -
E4
•Refer to the Service Manual OB185 REVISED EDITION C when MSH-18NV- is connected with
MXZ-32NV- or MXZ-32NV- as multi system units.
•Refer to the Service Manual OB227 REVISED EDITION-B when MSH-18NV- is connected with
MXZ-32RV- as multi system units.
E1
E4
E2E1
E4
Revision:
●Information for connecting MSH-18NV- with
MXZ-32RV- was described.
●TROUBLESHOOTING has been modified.
E1
E4
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