May 2020
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
CONTENTS
1. SAFETY PRECAUTION ··································· 2
2. OVERVIEW OF UNIT ······································ 5
3. SPECIFICATIONS ·········································· 8
4. OUTLINES AND DIMENSIONS ························· 9
5. WIRING DIAGRAM ········································10
6
. NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION ············
11
7. TROUBLESHOOTING ····································15
8. DISASSEMBLY PROCEDURE ························· 24
BRANCH BOX
HFC
utilized
R410A
Note:
• This service manual
describes technical data of
branch box. As for indoor
units and outdoor unit,
refer to its service manual.
PARTS CATALOG (OCB744)
PAC-MK54BC
No. OCH744
[Service Ref.]
PAC-MK54BC
PAC-MK34BC
[Model Name]
<Branch box>
PAC-MK54BC
PAC-MK34BC
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