SERVICE MANUAL

SPLIT-TYPE, HEATPUMP AIR CONDITIONERS

SPLIT-TYPE, AIR CONDITIONERS

No. OC370

REVISED EDITION-B

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·····················11
8.
WIRING DIAGRAM
············································12
9.
REFRIGERANT SYSTEM DIAGRAM
··················13
10. TROUBLESHOOTING ···································14
11. DISASSEMBLYPROCEDURE·······················30
12. PARTS LIST···················································33
13. RoHS PARTS LIST········································38

Indoor unit

[Model names] [Service Ref.]

PLA-A12AA PLA-A12AA PLA-A12AA1
PLA-A18AA PLA-A18AA PLA-A18AA1
PLA-A24AA PLA-A24AA PLA-A24AA1
PLA-A30AA PLA-A30AA PLA-A30AA1
PLA-A36AA PLA-A36AA PLA-A36AA1
PLA-A42AA PLA-A42AA PLA-A42AA1

June 2007

INDOOR UNIT
WIRED REMOTE
CONTROLLER
WIRELESS REMOTE
CONTROLLER
ON/OFF TEMP
ON/OFF
TEMP.
Model name
indication
3 3 2 2 3
NOTE:
• This manual describes only
service data of the indoor
units.
• RoHS compliant products
have <G> mark on the spec
name plate.
• For servicing RoHS compliant
products, refer to the RoHS
PARTS LIST.
Revision:
• WIRING DIAGRAM has been
changed in REVISED EDI-
TION-B.
• Some descriptions have been
modified.
• Please void OC370 REVISED
EDITION-A.
OC370B--1.qxp 07.6.20 2:42 PM Page 1