LG WF-HD120S Service Manual page 44

DRAIN ERROR
Is displayed?
Yes
Is the connector connected
to pump motor assembly
disconnected or
disassembled?
Drain pump
Pump wire
Connection connector
No
When you press both
Water level button and
Spin button
simultaneously, is the
water level frequency
below 26.0 kHz?
Reconnect or
repair
Yes
the connector
Check the AIR
CHAMBER
,the tube
Yes
(clogged),
and press
switch
43
No
Is the coil of the drain
pump too high or low?
(resistance of the coil
is 10-20 )
(Refer to 9-4 Pump motor
assembly)
No
Is the voltage between
connectors out of range?
(CN5 pin5)
- After remove Terminal
Position Assurance (TPA)
of connector, check as follows.
- Pump running : 220V 5%
- Stopped Motor/Pump : 0~1V
Method
1. Press the Power button, while the SPIN SPEED
button and SOIL LEVEL button is pressed
simultaneously.
2.Press Start/Pause button
: 1 time Pump slow-speed running
: 2 times Pump mid-speed running
: 3 times Pump high-speed running
: 4 times Stop the Motor/Pump
[Note] Environmental check list
1) The drainage hose must not stay in a lower position
2) The drainage hose must not be bent or
clogged in any way due to the surrounding
physical configuration
3) The drainage hose must not get frozen at all times.
4) The drainage pump must not have any improper
substance or material inside that may cause
a machine breakdown
Replace the
DRAIN
Yes
PU MP
ASS E MBLY .
Replace the
MAIN PWB
Yes
ASS EM BLY .
.