TECHNICAL & SERVICE MANUAL
Indoor unit
[Model names]
[Service Ref.]
PLFY-P12NBMU-E
PLFY-P15NBMU-E
PLFY-P18NBMU-E
PLFY-P24NBMU-E
PLFY-P30NBMU-E
PLFY-P36NBMU-E
No. OCH421
REVISED EDITION-B
CONTENTS
1. TECHNICAL CHANGES......................... 2
2. FEATURES............................................. 3
3. PART NAMES AND FUNCTIONS.......... 4
4. SPECIFICATIONS................................... 6
5. 4-WAY AIR FLOW SYSTEM................. 10
6. OUTLINES AND DIMENSIONS............ 13
7. WIRING DIAGRAM............................... 14
8. REFRIGERANT SYSTEM DIAGRAM...... 16
9. MICROPROCESSOR CONTROL......... 17
10. TROUBLESHOOTING......................... 24
11. DISASSEMBLY PROCEDURE............. 33
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
PLFY-P12NBMU-E PLFY-P12NBMU-ER1
PLFY-P12NBMU-ER2
PLFY-P15NBMU-E PLFY-P15NBMU-ER1
PLFY-P15NBMU-ER2
PLFY-P18NBMU-E PLFY-P18NBMU-ER1
PLFY-P18NBMU-ER2
PLFY-P24NBMU-E PLFY-P24NBMU-ER1
PLFY-P24NBMU-ER2
PLFY-P30NBMU-E PLFY-P30NBMU-ER1
PLFY-P30NBMU-ER2
PLFY-P36NBMU-E PLFY-P36NBMU-ER1
PLFY-P36NBMU-ER2
Note:
• This manual does not
cover outdoor units.
When servicing them,
please refer to the outdoor
unit’s service manual.
• RoHS compliant products
have <G> mark on the
spec name plate.
April 2012
INDOOR UNIT
Model name
indication
PARTS CATALOG (OCB421)
R410A / R22
Revision:
•
PLFY-P12/15/18/24/30/36
NBMU-ER2 have been
added in REVISED
EDITION-B.
•
Some descriptions have
been modified.
•
Please void OCH421
REVISED EDNTION-A.
