LG WM3988HWM Service Manual page 26

Is
Is the connector connected
to pump motor assembly
disconnected or
disassembled?
Circulation pump
Drain pump
Connection connector
When you press both
WASH/RINSE button and
SOIL LEVEL button
simultaneously, is the
water level frequency
below 26.0 kHz?
(Refer to 7-4)
Downloaded from www.Manualslib.com
DRAIN ERROR
displayed?
Yes
Reconnect or
Yes repair
the connector.
No
Check the AIR
CHAMBER,
the tube
(clogged),
Yes
and press
switch
manuals search engine
No
Is the coil of the drain
pump too high or low?
(resistance of the coil
is 10-20Ω)
(Refer to 9-4 Pump motor
assembly)
No
Is the voltage between
connectors out of range?
(WH pin1~ BL3 pin1)
- After remove Terminal
Position Assurance (TPA)
of connector, check as
follows.
- Pump running : 120V±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.
25
Replace the
DRAIN
Yes
PUMP
ASSEMBLY.
Replace the
Yes MAIN PWB
ASSEMBLY.