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SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
3 3 2 2 3
CONTENTS
1. TECHNICAL CHANGES
..........................
2
2. REFERENCE MANUAL
...........................
2
3. SAFETY PRECAUTION
........................
3
4. PART NAMES AND FUNCTIONS
........
5
5. SPECIFICATIONS
.................................
8
6. NOISE CRITERION CURVES
.............
10
7. OUTLINES AND DIMENSIONS
............
12
8.
WIRING DIAGRAM
................................
13
9.
REFRIGERANT SYSTEM DIAGRAM
......
15
10. TROUBLESHOOTING
........................
16
11. SPECIAL FUNCTION
..........................
31
12. DISASSEMBLY PROCEDURE
...........
34
NOTE:
• This manual describes only
service data of the indoor units.
• RoHS compliant products have
<G> mark on the spec name
plate.
PARTS CATALOG (OCB420)
WIRED REMOTE
CONTROLLER
WIRELESS REMOTE
CONTROLLER
ON/OFF TEMP
ON/OFF
TEMP.
INDOOR UNIT
Model name
indication
No. OCH420
REVISED EDITION-A
October 2007
PLA-A12BA PLA-A12BA1
PLA-A18BA PLA-A18BA1
PLA-A24BA PLA-A24BA1
PLA-A30BA PLA-A30BA1
PLA-A36BA PLA-A36BA1
PLA-A42BA PLA-A42BA1
PLA-A12BA
PLA-A18BA
PLA-A24BA
PLA-A30BA
PLA-A36BA
PLA-A42BA
Revision:
• PLA-A12/18/24/30/36/42BA1
are added in REVISED
EDITION-A.
• Some descriptions have been
modified.
• Please void OCH420.
Indoor unit
[Model names] [Service Ref.]