TECHNICAL & SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES·······················2
2. PART NAMES AND FUNCTIONS········3
3. SPECIFICATIONS·································7
4. DATA ···················································11
5. OUTLINES AND DIMENSIONS··········24
6. WIRING DIAGRAM·····························26
7.
REFRIGERANT SYSTEM DIAGRAM
······27
8. OPERATION FLOW-CHART··············28
9. MICROPROCESSOR CONTROL·······32
10. TROUBLESHOOTING························54
11. 4-WAY AIR FLOW SYSTEM···············66
12. SYSTEM CONTROL···························72
13. DISASSEMBLY PROCEDURE···········77
14. PARTS LIST········································80
15. OPTIONAL PARTS·····························85
Indoor unit
[Model names] [Service Ref.]
PLH-3AK PLH-3AK.UK
PLH-3AK
1.UK
PLH-3AKH PLH-3AKH.UK
PLH-3AKH
1.UK
PLH-4AKS PLH-4AKS.UK
PLH-4AKS
1.UK
PLH-4AKHS PLH-4AKHS.UK
PLH-4AKHS
1.UK
PLH-5AKS PLH-5AKS.UK
PLH-5AKS
1.UK
PLH-5AKHS PLH-5AKHS.UK
PLH-5AKHS
1.UK
PLH-6AKS PLH-6AKS.UK
PLH-6AKS
1.UK
PLH-6AKHS PLH-6AKHS.UK
PLH-6AKHS
1.UK
Note:
• This manual does not cover the
following outdoor units. When ser-
vicing them, please refer to the
following service manual and this
manual in a set.
[Service Ref.]
(OC150 REVISED EDITION-A)
PUH-3VKA2.UK PUH-3YKA2.UK
PUH-4YKSA2.UK
PUH-5YKSA2.UK
PUH-6YKSA2.UK
(OC184)
PUH-4VKSA.UK
INDOOR UNIT
Ceiling Cassettes
Series PLH
WIRED REMOTE
CONTROLLER
• Please void OC211.
Revision:
• PLH-3AK
1.UK, PLH-3AKH1.UK,
PLH-4AKS1.UK, PLH-4AKHS1.UK,
PLH-5AKS1.UK, PLH-5AKHS1.UK,
PLH-6AKS1.UK and
PLH-6AKHS1.UK are added in
REVISED EDITION-A.
• “14. PARTS LIST” has been
modified.
No. OC211
REVISED EDITION-A
SPLIT-TYPE, HEAT PUM PAIR CONDITIONERS
WIRELESS REMOTE
CONTROLLER
ON/OFF TEMP
MODEL SELECT
NOT AVAILABLE
CHECK
TEST RUN
˚C
AMPM
AMPM
PLH- •AK.UK PLH- •AK1.UK
PLH- •AKH.UK PLH- •AKH1.UK
PLH- •AKS.UK PLH- •AKS1.UK
PLH- •AKHS.UK PLH- •AKHS1.UK
Model name
indication
OC211-A--1.qxp 04.9.28 4:39 PM Page 1
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