LG LCU240CP Service Manual - Page 41
Troubleshooting CH04
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Troubleshooting CH04 Display code 04 Title Drain pump / Float switch Cause of error • Float switch Open. (Normal : short) CN Float Troubleshooting Guide Check point & Normal condition • The connection of wire(Drain pump/ Float switch) • Drain pump power input. (220V) • Drain tube installation. • Indoor unit installation. (Inclination) 0Ω Ω Check the resistance 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. Service Manual 41
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Service Manual
41
Troubleshooting Guide
Troubleshooting CH04
Check the resistance
Ω
0
Ω
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.