TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGE.................................... 2
2. SAFETY PRECAUTION.................................... 2
3. OVERVIEW OF UNITS...................................... 5
4. SPECIFICATIONS............................................. 9
5. DATA................................................................ 11
6. OUTLINES AND DIMENSIONS...................... 34
7. WIRING DIAGRAM......................................... 36
8. NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION.... 38
9. TROUBLESHOOTING.................................... 39
10. PRECAUTIONS AGAINST REFRIGERANT LEAKAGE..... 79
11. DISASSEMBLY PROCEDURE....................... 81
OUTDOOR UNIT
BRANCH BOX
No. OCH468
REVISED EDITION-C
[Service Ref.]
MXZ-8B48NA
MXZ-8B48NAR1
PAC-AKA51BC
PAC-AKA31BC
Model name
indication
HFC
utilized
R410A
November 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.
[Model name]
<Outdoor unit>
MXZ-8B48NA
<Branch box>
PAC-AKA51BC
PAC-AKA31BC
(Indispensable optional parts
for MXZ-8B48NA)
PARTS CATALOG (OCB468)
• Please void OCH468
REVISED EDITION-B.
Revision:
• Switch setting on page 68
has been modified in
REVISED EDITION-C.
• Some descriptions have
been modified.
Summary of Contents for MXZ-8B48NA
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