LG WD-12270FD Service Manual page 24

Is water supply shut-off?
Is the tap opened?
When you press both SPIN button and RINSE
button simultaneously, is the water level frequency
below 246?
Is the inlet valve filter clogged?
Is resistance between each terminal of INLET
Pre Wash
VALVE ASSEMBLY 0.8-1.2
Verify the voltage of the inlet valve connector is
220-240V AC.
(Refer to 7-2 QC TEST MODE)
Main Wash
DETERGENT DOES NOT FLOW IN
Is water supplied?
Are receptacles correctly connected to the
terminals of the INLET VALVE ASSEMBLY?
Has detergent been put in the correct compartment
of the dispenser?
Is the detergent caked or hardened?
NO WATER SUPPLY
NO
YES
NO
NO
kΩ
?
YES
YES
YES
YES
23
NO
Open the tap.
Check the AIR CHAMBER
YES
and the tube (clogged).
YES Clean the filter.
Replace the INLET VALVE
NO
ASSEMBLY.
Check electrical connection.
NO
Replace the MAIN PWB
ASSEMBLY.
Refer to
NO
NO WATER SUPPLY
NO
Check the wiring.
Put the detergent in the
correct place.
NO
YES
Clean the dispenser.