Trouble Shooting Methods; Trouble Shooting According To Displayed Error Message; Inlet Error; Drain Error - LG LDF8874ST Service Manual

7. TROUBLE SHOOTING METHODS

8.TROUBLE SHOOTING METHODS
A. TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE
ERROR MESSAGE

INLET ERROR

displayed
Condition
Not reached to the nor-
mal water level in spite
of 10 min. water supply

DRAIN ERROR

displayed
Condition
Not fully drained out in
spite of 5 min. drain
operation
LEAKAGE ERROR
or
displayed
Condition
The excessive RPM of
Washing Motor
happened during Wash
cycle due to water
leakage.
POSSIBLE CAUSE
FOR ERROR OCCURRENCE
The Water Supply Tap is closed.
The Water Supply is shut off.
The Inlet Hose is kinked.
The Water Pressure is very low
(below 10 psi) or high(above 120 psi)
Inlet Valve is OK?
The filter of Inlet Valve is clogged
by impure water.
The Hall sensor is OK?
The Impeller of Air Guide is bound.
The Drain Hose kinked or blocked.
Wiring connection is OK?
The drain outlet of sump is
blocked.
The Drain Pump/Motor or circuit is
troubled.
No drainage though drain pump is
working properly? Air in the
impeller of the drain pump might
cause this case.
The Air gap is clogged.
Knockout plug of garbage disposal
not removed.
Water leakage in Hose connections.
Water is leaked by damages.
The Motor Water Seal leakage of
Sump assembly .
The height of Drain Hose connection
(sink-Drain Hose) is not over 20 .
Impeller of the W ashing Pump is
worn away
.
The float assembly is not working.
The lower tub gasket came
loose or fell off.
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For Authorized Service Technician
REMEDY
Take action on Water Supply
device.
Measure the electric resistance of
Inlet Valve. (23~27
Clean the filter of Inlet Valve.
Check the frequency of Inlet Water
by the Test Mode.
Replace the Air Braker.
Remove the cause of kink or block.
Check the wiring connection.
Measure the electric resistance of
Drain Motor. (20-40
Replace the Drain Motor or repair
the Circuit.
Remove all the water remained in
the drain hose that is connected to
the drain pump / motor.
Keep the unit upright, don't lay it
down.
Cautious about leaking on the floor.
Clean the air gap.
Remove knock out plug.
Replace the connections of Hose.
Check the point of damages and
repair or replace the related parts.
Read the Installation Instructions
(page 44) and fix it to the
recommended Height.
Replace the Impeller of the
Washing Pump.
Change the float assembly.
Replace the lower tub gasket.
※ Remove water near the Float
ASM before the repair.
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