SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················5
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES·······························7
5. OUTLINES AND DIMENSIONS ·························8
6. WIRING DIAGRAM ············································9
7. REFRIGERANT SYSTEM DIAGRAM ··············11
8. PERFORMANCE CURVES······························12
9. ACTUATOR CONTROL····································21
10. SERVICE FUNCTIONS·····································22
11. TROUBLESHOOTING······································22
12. DISASSEMBLY INSTRUCTIONS·····················34
13. PARTS LIST······················································38
Wireless type
Models
No. OB328
REVISED EDITION-A
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MUZ-A09YV -
MUZ-A12YV -
MUZ-A09YVH -
MUZ-A12YVH -
E1
E1
E1
E1
MUZ-A09YV -
MUZ-A12YV -
MUZ-A09YVH -
MUZ-A12YVH -
E1
E1
E1
E1
Indication of
model name
NOTE:
This service manual describes technical data of the outdoor units.
•As for indoor units MSZ-A09YV- and MSZ-A12YV- , refer to the service manual OB327.
•As for indoor unit MCFZ-A12WV- , refer to the service manual OB344.
E1
E1E1
Revision A:
● MUZ-A12YV- and MUZ-A12YVH-
can be connected to MCFZ-A12WV- .
● Some mistakes were corrected.
E1
E1E1
Please void OB328.
OB328 A--1qxp 04.4.26 4:49 PM Page 1
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
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