SERVICE MANUAL
CONTENTS
1. REFERENCE MANUAL .................................. 2
2. SAFETY PRECAUTION .................................. 3
3. PARTS NAMES AND FUNCTIONS ................ 4
4. SPECIFICATIONS ......................................... 12
5. NOISE CRITERION CURVES ....................... 14
6. OUTLINES AND DIMENSIONS ..................... 15
7. WIRING DIAGRAM ........................................ 16
8. REFRIGERANT SYSTEM DIAGRAM ........... 17
9. TROUBLESHOOTING ................................... 18
10. SPECIAL FUNCTION .................................... 33
11. DISASSEMBLY PROCEDURE ...................... 40
April 2014
WIRED REMOTE
CONTROLLER
WIRELESS REMOTE
CONTROLLER
ON/OFF
TEMP
ON/OFF
TEMP.
PARTS CATALOG (OCB551)
No. OCH551
REVISED EDITION-A
Note:
• This manual describes ser-
vice data of the indoor units
only .
• RoHS compliant products
have <G> mark on the
spec name plate.
INDOOR UNIT
Model name
indication
Series PLY
Indoor unit
[Model Name]
PLY-P18BA
PLY-P24BA
PLY-P30BA
PLY-P36BA
PLY-P42BA
PLY-P48BA
[Service Ref.]
PLY-P18BA.TH
PLY-P24BA.TH
PLY-P30BA.TH
PLY-P36BA.TH
PLY-P42BA.TH
PLY-P48BA.TH
SPLIT-TYPE AIR CONDITIONERS
(Option)
Revision:
• Added
PLY-P42BA.TH and
PLY-P48BA.TH in
REVISED EDITION-A.
• Some descriptions has
been modified.
• Please void OCH551.