LG ATNH486DLFC - Troubleshooting CH04 Drain Pump Error

Service Manual 115
Troubleshooting Guide
Troubleshooting CH04
Check the resistance
Ω
0Ω
CN Float
04
Drain pump
/ Float switch
• Float switch Open.
(Normal : short)
• The connection of wire(Drain pump/ Float switch)
• Drain pump power input. (220V)
• Drain tube installation.
• Indoor unit installation. (Inclination)
Display
code
Title Cause of error Check point & Normal condition
Check Point
1. Check the wire connection. (Open, Soldered poorly) → Repair the connection or change the PCB.
2. Check the resistance of float switch (Abnormal : Open, Normal : short) → Check the float switch.
3. Check the level of water
4. Check the volt. Of Drain pump power supply. (AC 230V) → Repair or Change the main PCB.