DOWNLOAD LG LS-K1860YL Service Manual ↓ Size: 3.93 MB | Pages: 68 in PDF or view online for FREE

Model
LS-K1860YL
Pages
68
Size
3.93 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
ls-k1860yl.zip
Date
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-62-
When compressor does not oprate normally.
■
Communication error between Indoor and Outdoor (Error Code 
➄
)
Trouble 7-2
Does the operating LED in display PCB
Ass'y blink 5 times?
• Check the state of connecting cable 
(3 line) bewteen indoor and outdoor unit .
• Check Fuse, Noise Filter, PTC, etc.
NO
YES
Is the voltage of CN-POWER Pin No. 1,2
AC220/240V in Main PCB Ass'y.
• Electrical wiring diagram(Colors)
• Check the connecting state
of connectors in outdoor PCB Ass'y
(Main/Sub)
• Check the Fuse of outdoor Control Box.
NO
YES
Is the voltage of CN-AC AC220/240V in
SUB PCB Ass'y?
• Check the connecting state of connectors
in PCB Ass'y(Main/Sub).
NO
YES
Is the voltage of CN-DC over than
DC350V?
Replace the Sub PCB Ass'y.
NO
YES
Is the connection of CN-DATA between
indoor and outdoor unit right?
Replace the PCB Ass'y.
• Main PCB Ass'y (Indoor/Outdoor)
• Control Box Ass'y.
• Reconnect the cable to terminal block.
• Check the PCB pattern(Resoldering).
NO
YES
-63-
When compressor does not oprate normally.
■
CT Error (Error Code 
➆
)
Trouble 7-3
Does the operating LED in Display PCB
Ass'y blink 7 times?
• Check the state of connecting cable 
(3 line) bewteen Indoor and Outdoor Unit .
• Check fuse, Noise Filter, PTC, etc.
NO
YES
Is the courrent transformer(CT) in Main
PCB Ass'y right?
Check the PCB pattern(resoldering)
NO
YES
Is the indoor/outdoor fan locked?
Check the indoor/outdoor fan motor.
NO
YES
Is the discharge temperature of Indoor unit
right(11°C~17°C) in the cooling mode?
Check the compressor.
NO
YES
Is the refrigerant pressure right?
Supply the refrigerant
NO
YES
Replace the PCB Ass'y.
• Main PCB Ass'y(Outdoor)
• Control Box Ass'y(Outdoor)
-77-
Exploded View and Replacement Parts List 
1. Indoor Unit
152313
카
오
스
 
스
윙
파
워
냉
방
운
전
/
정
지
풍
량
선
택
온
도
조
절
135316
268712
267110
135311
35211B
354212
135314
152302
264110
668711
249951
263230
W0CZZ
159901
146811
346810
359011
342800
131410
733010
352150
-80-
2. Outdoor Unit
437210
559011
546810
554031
435512
435511
552111
437212
430411
661400
447910
554160
550140
263230
263230
552116
561410
552202
553000
552203
552203
263230
WOFT
668711
668713
649950
W0CZZ
000000
000000
000000
000000
000000
000000
000000
000000
000000
000000
000000
000000
000000
000000
000000
000000
000000
7K, 9K, 12K Series
18K Series
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