Read LG 41729 Service Manual online
26
DRAIN ERROR
Is displayed?
Check the connectors at the
main PCB and the drain
pump. Are the connectors
loose or disconnected?
main PCB and the drain
pump. Are the connectors
loose or disconnected?
Reconnect or
repair
the connector.
repair
the connector.
Yes
Circulation pump
Yes
Drain pump
Connection connector
No
No
When you press both
WASH/RINSE button and
DELAY START button
simultaneously, is the
water level <250?
WASH/RINSE button and
DELAY START button
simultaneously, is the
water level <250?
Proceed to next step at right
Check the air
dome and
pressure hose
for clogging.
Check the
pressure
switch. See
test #2.
dome and
pressure hose
for clogging.
Check the
pressure
switch. See
test #2.
Measure the resistance of
the drain pump motor. Is
the resistance between 10Ω
and 20Ω ?
the drain pump motor. Is
the resistance between 10Ω
and 20Ω ?
(Refer to 9-4 Pump motor
assembly.)
assembly.)
Replace the
DRAIN PUMP
ASSEMBLY.
DRAIN PUMP
ASSEMBLY.
Yes
Yes
Check the voltage between
the main PCB connectors
NA4-1 BN and BL3-1 BK. Is
the voltage 120 VAC ± 5%?
the main PCB connectors
NA4-1 BN and BL3-1 BK. Is
the voltage 120 VAC ± 5%?
TO TURN ON THE DRAIN PUMP:
1. Turn on the washer
2. Press the SPIN SPEED button to select LOW
speed.
3. Press the START/PAUSE button.
The drain pump will be energized for several
minutes at the beginning of the spin cycle.
ALWAYS CHECK FOR EXTERNAL CAUSES
Kinked or clogged drain hose
Frozen drain hose
Foreign objects clogging the drain pump filter
Foreign objects caught in pump impeller
Kinked or clogged drain hose
Frozen drain hose
Foreign objects clogging the drain pump filter
Foreign objects caught in pump impeller
Replace the
MAIN PWB
ASSEMBLY.
MAIN PWB
ASSEMBLY.
No
No
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