LG WD-14220FD Service Manual page 21

Option (Hot)
Option (Hot)
Wiring diagram
max
NO WATER SUPPLY
Is water supply shut-off?
NO
Is the tap opened?
YES
When you press both Rinse button and Spin button
simultaneously, is the water level frequency below
240?
NO
Is the inlet valve filter clogged with impurity?
NO
Is resistance between each terminal of INLET
k
VALVE ASSEMBLY is 2~8
YES
Check the voltage of the inlet valve connector
220 - 240V~.
(Refer to 7-2 QC TEST MODE)
DETERGENT DOES NOT FLOW IN
Is water supplied?
YES
Are replaceptacles correctly connected to the
terminals of the INLET VALVE ASSEMBLY?
YES
Is detergent put in the correct compartment of
the drawer?
YES
Is the detergent caked or hardened?
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NO
YES
YES
NO
?
NO
NO
NO
NO
YES
20
Open the tap.
Check the AIR CHAMBER
and the tube clogged
with impurity.
Clean the filter.
Replace the INLET VALVE
ASSEMBLY.
Replace the MAIN PWB
ASSEMBLY
Refer to
NO WATER SUPPLY
Check the wiring on the
dispenser.
Put the detergent in the
correct position
PRE+MAIN
MAIN WASH
: Detergent
Clean the drawer.