TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES·······················2
2. PART NAMES AND FUNCTIONS········3
3. SPECIFICATIONS·································5
4. DATA···················································13
5. OUTLINES AND DIMENSIONS··········20
6. WIRING DIAGRAM·····························24
7.
REFRIGERANT SYSTEM DIAGRAM
······26
8. OPERATION FLOW-CHART··············28
9. MICROPROCESSOR CONTROL·······32
10. TROUBLESHOOTING························54
11. SYSTEM CONTROL ···························63
12. DISASSEMBLY PROCEDURE···········68
13. PARTS LIST········································71
14. OPTIONAL PARTS ·····························80
Indoor unit
[ Model names ] [ Service Ref. ]
PKH-2FKA PKH-2FKA
3
PKH-2.5FKA PKH-2.5FKA
2
PKH-2.5FKA
3
PKH-3FKA PKH-3FKA
2
PKH-3FKA
3
PKH-4FKSA PKH-4FKSA
2
PKH-4FKSA
3
No. OC132
REVISED EDITION-A
2001
Indoor unit
Wall Mounted
Series PKH
FILTER
CHECK MODE
CHECK
TEST RUN
REMOTE CONTROLLER
• PKH-2.5FKA
3
, PKH-3FKA
3
and
PKH-4FKSA
3
are added in
REVISED EDITION-A.
• Please void OC132 .
• This manual does not cover
outdoor units. When servicing
them, please refer to the service
manual No.OC128 REVISED
EDITION-C and this manual in
a set.
[Service Ref.]
PUH-2VKA
2, PUH-2VKA3,
PUH-2NKA1, PUH-2NKA2,
PUH-2.5VKA2, PUH-2.5VKA3,
PUH-2.5NKA1, PUH-2.5NKA2,
PUH-3VKA2, PUH-3VKA3,
PUH-3YKA2, PUH-3YKA3,
PUH-3YKA4,
PUH-3NKA1, PUH-3NKA2,
PUH-4YKSA3, PUH-4YKSA4,
PUH-4TKSA1
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