LG LD1455WLFCS2 - Troubleshooting: Drain Error; Drain Error Diagnosis Flowchart

Drain Error
Is displayed?
Yes
Does the drain motor operate?
How to check the water supply
① press 3 buttons at the same time.
(Half load, Delay start and Power)
② press ‘Delay start’ button 2 times
Motor rpm is not increased. Motor rpm is increased.
Is the filter clogged? Clean the filter
No
Is the connector connected to
main PCB assembly disconnected
or disassembled?
(YL3 : Pump signal)
No
Yes
Reconnect or
repair the connector.
Is the connector connected to
drain motor disconnected
or disassembled?
Reconnect or
repair the connector.
Is the voltage between connectors
out of range?(YL3 pin1~pin2~pin3)
- After remove terminal position
assurance (TPA) of connector,
check the voltage when water is
drained.(The volt
age is over 5V AC)
No
Replace the main
PCB assembly.
Yes
Is the outer drain hose
kinked or blocked or frozen?
Remove the cause of kink
or block.
No
Is the inner drain hose
and drain case
kinked or blocked or frozen?
Remove the cause of kink
or block.
Is the resistance values between
connectors out of range?
(range is 4~5Ω)
(Yellow 3P, pin1~pin2~pin3)
Yes
No
Replace the drain
motor
Yes
Yes
Yes
Yes
Condition.
Not fully drained out in spite of 5 min. drain operation.
36