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SERVICE MANUAL
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································6
4. OUTLINES AND DIMENSIONS ······················ 11
5. WIRING DIAGRAM ··········································15
6. REFRIGERANT SYSTEM DIAGRAM··············24
7. PERFORMANCE CURVES······························29
8. MICROPROCESSOR CONTROL ····················33
9. SERVICE FUNCTIONS ····································44
10. TROUBLESHOOTING······································47
11. DISASSEMBLY INSTRUCTIONS·····················60
12. PARTS LIST······················································70
13. OPTIONAL PARTS ····································BACK
Wireless type
Models
MSH-07NV -
(
WH
)
· MUH-07NV -
MSH-09NV -
(
WH
)
· MUH-09NV -
MSH-12NV -
(
WH
)
· MUH-12NV -
MSH-18NV -
(
WH
)
· MUH-18NV -
MSH-24NV -
(
WH
)
· MUH-24NV -
MSH-07NV -
(
WH
)
· MUH-07NV -
MSH-09NV -
(
WH
)
· MUH-09NV -
MSH-12NV -
(
WH
)
· MUH-12NV -
MSH-18NV -
(
WH
)
· MUH-18NV -
MSH-24NV -
(
WH
)
· MUH-24NV -
MSH-18NV -
(
WH
)
· MUH-18NV -
E3E3
E2E2
E2E2
E2E2
E2E2
E2E2
E1E1
E1E1
E1E1
E1E1
E1E1
No. OB207
MSH-18NV -
MSH-18NV -
MSH-18NV -
E3
E2
E1
This Servise Manual OB207 deals with MSH-07/09/12/18/24NV-E1,
MUH-07/09/12/18/24NV-E1, MSH-18NV-E2, and MUH-18NV-E2 in
OB176 REVISED EDITION-A issued in July in1997.
Therefore, please refer to OB207, not to OB176 REVISED
EDITION-A, for the above models.
Refer to the Service Manual OB185 when MSH-07/09/12NV- , MSH-07/09/12/18NV- , and MSH-18NV-
are connected with MXZ-32NV- as multi system units.
E1
E3E2E1
OB207t-1qxp 25/9/97 8:51 PM Page 1