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SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGES ····································2

2. PART NAMES AND FUNCTIONS······················5

3. SPECIFICATION·················································5

4. NOISE CRITERIA CURVES·······························6

5. OUTLINES AND DIMENSIONS ·························7

6. WIRING DIAGRAM ············································7

7. REFRIGERANT SYSTEM DIAGRAM················8

8. PERFORMANCE CURVES································9

9. MICROPROCESSOR CONTROL ····················20

10. SERVICE FUNCTIONS·····································22

11. TROUBLESHOOTING······································22

12. DISASSEMBLY INSTRUCTIONS·····················29

13. PARTS LIST······················································32

Wireless type

Models

MUH-A07YV -

MUH-A09YV -

MUH-A12YV -

No. OB331

HFC

utilized

R410A

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

MUH-A07YV -

MUH-A09YV -

MUH-A12YV -

Indication of

model name

NOTE:

•This manual describes technical data of outdoor units.

•As for indoor units MSC-A07/A09/A12YV - , refer to the service manual OB329.

OB331-1.qxp 03.12.3 1:20 PM Page 1

Mitsubishi Electric MUH-A12YV-E1 User Manual

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