DOWNLOAD LG LWC1260ACG Service Manual ↓ Size: 3.43 MB | Pages: 127 in PDF or view online for FREE

Model
LWC1260ACG
Pages
127
Size
3.43 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
lwc1260acg.zip
Date
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LG LWC1260ACG Service Manual ▷ View online

—26—
Is setting 
Temp. set lower than Room 
Temp.-0.5
°
C?
Is the voltage No.10
of IC7 0V?
• Exchange IC7.
• Select the setting Temp. to lower Number.
• Wait 3 Minutes
Is the Unit for 3 minutes
delay?
• Exchange MAIN 
  PCB Ass'y.
Is the voltage N0.7 of 
IC 7 DC 5V?
• Check the RY-COMP.
• Check the wiring 
  Diagram.
NO
NO
NO
NO
YES
YES
YES
YES
Is the wire connection of 
RY-COMP all right?
• Check the RY-COMP.
• Connect LEAD Wire to 
  RY-COMP again.
NO
YES
Possible Trouble 2
• The compressor does not operate.
Possible Trouble 3
• The compressor always operate.
—27—
• Exchange IC1.
• Exchange IC7.
Is the voltage NO.2 or 3
of IC7 DC 5V?
Is the voltage NO.14 or 15
of IC7 0V?
• Check the RY-High or 
             RY-Low.
• Check the wiring diagram.
NO
NO
YES
YES
• Exchange IC1.
• Exchange IC7.
• Check the PCB pattern.
Is the voltage NO.5
of IC7 DC 5V?
Is the voltage NO.12
of IC7 0V?
• Check the RY-SYNC.
• Check the connectionn 
  of CN-SYNC.
NO
NO
YES
YES
Possible Trouble 4
• Fan does not operate.
Possible Trouble 5
• Auto Swing does not operate.
—28—
Is the voltage of Battery
about over 2.3V?
• Exchange Receiver Ass'y.
Is the connection of 
CN-DISP2 all right?
Is the voltage No.7 
of CN-DISP2 on Main PCB 
Ass'y DC 5V?
• Exchange the battery.
• Check the PCB pattern.
• Connect connector to 
  CN-DISP2 exactly.
NO
NO
NO
YES
YES
YES
NO
NO
NO
NO
YES
YES
YES
Is the IC6 all right?
Is the connection of 
CN-DISP1 all right?
• Exchange the display 
  PCB Ass'y. 
• Exchange IC6.
• Exchange TR1, 
  TR2, TR3.
• Connect connector 
  to CN-DISP1 exactly.
Does the TR1, 
TR2, TR3 operate normally
on main PCB Ass'y?
Possible Trouble 6
• Romote controller does not operate.
Possible Trouble 7
• It displays abnormally on Display PCB Ass'y.
—29—
NO
NO
YES
YES
Is the Knob of SW1
set to left position?
Is the voltage No.3 of 
CN-DISP2 of Main PCB
Ass'y DC 5V?
• Reference to 
  OWNER'S MANUAL.
• Set the Knob of SW1 
  to left position.
• Check the SW1.
• Check the pattern of 
  Main & Display PCB.
Possible Trouble 8
• The function of Auto Restart does not operate.
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