TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. PART NAMES AND FUNCTIONS ....................... 2
2. SPECIFICATIONS ............................................... 4
3. DATA .................................................................... 7
4. OUTLINES AND DIMENSIONS ........................ 16
5. WIRING DIAGRAM ............................................ 17
6. REFRIGERANT SYSTEM DIAGRAM ..................... 18
7. OPERATION FLOW-CHART ............................. 19
8. MICROPROCESSOR CONTROL ..................... 23
9. TROUBLESHOOTING ....................................... 44
10. SYSTEM CONTROL .......................................... 55
11. DISASSEMBLY PROCEDURE .......................... 60
12. PARTS LIST ....................................................... 64
13. OPTIONAL PARTS ............................................ 66
Indoor unit
ON/OFF
Remote controller
• This manual does not cover the
following outdoor units. When
servicing them, please refer to
the following service manual
and this manual in a set.
[Service Ref.]
PUH-2VKA
2
(OC128 REVISED EDITION-A)
PUH-2AKA
1
·TH-A (OC156)
PUH-2NKA
1
(OC145)
Indoor unit
[ Model names ]
[ Service Ref. ]
PKH-2GKLA
PKH-2GKLA
No. OC231
REVISED EDITION-A
October 2012
Revision :
• The indicated No. of
CORNER COVER (page
65) has been corrected in
REVISED EDITION-A
.
• Some descriptions have been
modified.
R22
• Please void OC231.
