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······················31
7. WIRING DIAGRAM ·········································34
8.
NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION
···38
9. TROUBLESHOOTING ····································40
10. ELECTRICAL WIRING····································88
11. WIRING SPECIFICATIONS·····························89
12. SYSTEM CONTROL ·······································90
13. REFRIGERANT PIPING TASK ·······················92
14. DISASSEMBLY PROCEDURE ·······················95
15. PARTS LIST ··················································102
16. RoHS PARTS LIST ·······································109
17. OPTIONAL PARTS ··························Back cover
OUTDOOR UNIT
BRANCH BOX
No. OC316
REVISED EDITION-D
[Model name] [Service Ref.]
<Outdoor unit>
MXZ-8A140VA MXZ-8A140VA
MXZ-8A140VA
1
MXZ-8A140VA2
MXZ-8A140VA3
<Branch box>
PAC-AK50BC PAC-AK50BC
PAC-AK30BC PAC-AK30BC
(Indispensable optional parts
for MXZ-8A140VA)
Model name
indication
Revision:
· MXZ-8A140VA
3 is added in
REVISED EDITION-D.
· Some descriptions have
been modified.
· Please void OC316
REVISED EDITION-C.
August 2007
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.
OC316D--1.qxp 07.8.24 2:10 PM Page 1
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