Read LG WM2550HVCA Service Manual online
20
DRAIN ERROR
Is displayed?
Is the connector connected
to pump motor assembly
disconnected or
disassembled?
to pump motor assembly
disconnected or
disassembled?
Reconnect or
repair
the connector.
repair
the connector.
Yes
Circulation pump
Yes
Drain pump
Connection connector
No
Yes
When you press both
WASH/RINSE
WASH/RINSE
button and
DELAY WASH
button
simultaneously, is the
water level frequency
below 25.0 kHz?
water level frequency
below 25.0 kHz?
Check the AIR
CHAMBER,
the tube
(clogged),
and press
switch.
CHAMBER,
the tube
(clogged),
and press
switch.
Is the coil of the drain
pump too high or low?
(resistance of the coil
is 10-20
pump too high or low?
(resistance of the coil
is 10-20
Ω)
(Refer to 9-4 Pump motor
assembly.)
assembly.)
Replace the
DRAIN PUMP
ASSEMBLY.
DRAIN PUMP
ASSEMBLY.
No
Yes
Is the voltage between
connectors out of range?
(NA2 pin1~ BL3 pin1)
- After remove Terminal
Position Assurance (TPA)
of connector, check as follows.
connectors out of range?
(NA2 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
- Stopped Motor/Pump : 0~1V
Method
1. Press the Power button, while the SPIN SPEED
button and SOIL LEVEL button is pressed
simultaneously.
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
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.
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.
a machine breakdown.
Replace the
MAIN PWB
ASSEMBLY.
MAIN PWB
ASSEMBLY.
Yes
No
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