DOWNLOAD LG LS-J0761NL_NM_NN / LS-J0962NL_NM_NN / LS-L1261NL_NM_NN Service Manual ↓ Size: 3.1 MB | Pages: 75 in PDF or view online for FREE

Model
LS-J0761NL_NM_NN LS-J0962NL_NM_NN LS-L1261NL_NM_NN
Pages
75
Size
3.1 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
ls-j0761nl.zip
Date
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LG LS-J0761NL_NM_NN / LS-J0962NL_NM_NN / LS-L1261NL_NM_NN Service Manual ▷ View online

-61-
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
-62-
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)
-65-
Electronic Control Device 
(1) MAIN PCB ASS'Y(INDOOR)
PCB ASS'Y SVC PART LIST: 6871A20062P(LS-J0761NL), 6871A20062M(LS-J0962NL)
6871A20062N(LS-L1261NL), 6871A20062Q(LS-L1261NM)
(2) MAIN PCB ASS'Y(OUTDOOR)
-66-
PCB ASS'Y SVC PART LIST : 6871A20068K(7k), 6871A20068H(9k), 6871A20068J (12k)
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