LG WD-90KFP Service Manual ▷ View online
20
NO
YES
NO
NO
YES
NO
YES
YES
NO
NO
YES
YES
YES
NO
NO
NO
YES
Wiring diagram
Option
Option
MAX
Is water supply shut-off?
Is the tap opened?
When you press both Rinse button and Spin button
simultaneously, is the water level frequency below
240?
simultaneously, is the water level frequency below
240?
Is the inlet valve filter clogged with impurity?
Is resistance between each terminal of INLET
VALVE ASSEMBLY is 2~8
VALVE ASSEMBLY is 2~8
k
?
Check the voltage of the inlet valve connector
110V~.
(Refer to 7-2 QC TEST MODE)
Is water supplied?
Are replaceptacles correctly connected to the
terminals of the INLET VALVE ASSEMBLY?
terminals of the INLET VALVE ASSEMBLY?
Is detergent put in the correct compartment of
the drawer?
the drawer?
Is the detergent hardened?
Open the tap.
Check the AIR CHAMBER
and the tube clogged
with impurity.
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.
NO WATER SUPPLY
DETERGENT DOES NOT FLOW IN
MAIN
WASH
SOFTENER
PRE -
WASH
21
YES
YES
NO
NO
NO
NO
YES
YES
YES
YES
Wiring diagram
Option
MAX
MAX
max
A B N O R M A L S O U N D
S O F T E N E R D O E S N O T F L O W I N
Fix the bolt tightly.
Replace the STATOR
ASSEMBLY or ROTOR
ASSEMBLY.
ASSEMBLY or ROTOR
ASSEMBLY.
Refer to
NO WATER SUPPLY
Check the wiring on the
dispenser.
dispenser.
Put it in the correct
compartment.
compartment.
Clean the cap and
drawer.
drawer.
Is the motor bolt loosened?
Is there friction noise from the motor?
Is water supplied?
Are receptacles correctly connected to the terminals
of the INLET VALVE ASSEMBLY?
of the INLET VALVE ASSEMBLY?
Is softener put in the correct compartment of the
drawer?
Is the softener cap clogged?
22
Wash
Rinse
NO
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
NO
PWB ASSY(Main)
AC 110V
(1)
(2)
Replace the
S.PRESSURE SWITCH
ASSEMBLY
Replace the MAIN PWB
ASSEMBLY
ASSEMBLY
Repair the DRAIN HOSE
ASSEMBLY.
Remove foreign material.
Reconnect or repair the
connector
connector
Repair the DRAIN PUMP
ASSEMBLY.
Repair the MAIN PWB
ASSEMBLY.
When pressing Wash and Rinse at the same time
after draining, is the water level frequency 248 ~ 262
or more?
When pressing Rinse, Spin buttons at the same
time while wash, is the water level frequency
between 230 - 243?
after draining, is the water level frequency 248 ~ 262
or more?
When pressing Rinse, Spin buttons at the same
time while wash, is the water level frequency
between 230 - 243?
Checking voltage between two pins as press the
POWER button is the voltage 110V?
POWER button is the voltage 110V?
Is the drain hose twisted or frozen?
Is the impeller of the drain pump clogged?
Is the connector disconnected, disassembled?
Is the coil of the drain pump cut-off?
(resistance of coil is 80~150 )
When checking voltage between connectors
( , )on spinning, is the voltage 110V as the
figure?
HEATING WITHOUT WATER
D R A I N M A L F U N C T I O N I N G
23
Push the THERMISTOR
tightly to the rubber.
tightly to the rubber.
When checking THERMISTOR on the tub is the
THERMISTOR loosened above 2mm from
the rubber?
HEATING CONTINUOUSLY ABOVE
THE SETTING WATER TEMPERATURE
Click on the first or last page to see other WD-90KFP service manuals if exist.