TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES
...................................
2
2. SAFETY PRECAUTION
....................................
3
3. OVERVIEW OF UNITS
......................................
6
4. SPECIFICATIONS
...........................................
14
5. DATA
................................................................
16
6. OUTLINES AND DIMENSIONS
......................
19
7. WIRING DIAGRAM
.........................................
21
8.
NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION
....
25
9. TROUBLESHOOTING
....................................
27
10. ELECTRICAL WIRING
....................................
75
11. WIRING SPECIFICATIONS
.............................
76
12. SYSTEM CONTROL
........................................
77
13. REFRIGERANT PIPING TASK
.......................
79
14. DISASSEMBLY PROCEDURE
.......................
82
15. PARTS LIST
....................................................
88
16. RoHS PARTS LIST
.........................................
95
17. OPTIONAL PARTS
..........................
Back cover
INDOOR UNITS COMBINATION SHEETS
OUTDOOR UNIT
BRANCH BOX
No. OC316
REVISED EDITION-E
[Model name]
[Service Ref.]
<Outdoor unit>
MXZ-8A140VA MXZ-8A140VA
MXZ-8A140VA1
MXZ-8A140VA2
MXZ-8A140VA3
<Branch box>
PAC-AK50BC PAC-AK50BC
PAC-AK30BC PAC-AK30BC
PAC-AK51BC PAC-AK51BC
PAC-AK31BC PAC-AK31BC
(Indispensable optional parts for MXZ-8A140VA)
Model name
indication
HFC
utilized
R410A
Revision:
•
PAC-AK51/31BC are added
in
REVISED EDITION-E.
• Some descriptions have
been modified.
•
Please void OC316
REVISED EDITION-D.
April 2010
NOTE:
• This service manual
describes technical data of
outdoor unit and branch box.
As for indoor units, refer to
its service manual.
• RoHS compliant products
have <G> mark on the
spec name plate.
• For servicing RoHS com-
pliant products, refer to the
RoHS PARTS LIST.
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