Mitsubishi Electronics MSH-07NV User Manual

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 -

No. OB207

MSH-18NV -

MSH-18NV -
MSH-18NV -

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.

OB207t-1qxp 25/9/97 8:51 PM Page 1