LG WD-12270RDA Service Manual ▷ View online
24
Hot water
Prewash
Dry
Main wash
Softener
cap
ABNORMAL SOUND
LIQUID DETERGENT/SOFTENER/BLEACH DOES NOT FLOW IN
Secure the bolt.
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
Container.
Container.
Is the motor bolt loosened?
Is there friction noise coming from the motor?
Is water supplied?
Are the plugs correctly connected to the terminals of
the INLET VALVE ASSEMBLY?
the INLET VALVE ASSEMBLY?
Is liquid detergent/softener/bleach put in the correct
compartment of the drawer?
compartment of the drawer?
Is the liquid detergent/softener/bleach cap clogged?
25
NO
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
NO
AC 220-240V
AC 220-240V
Replace the
SENSOR SWITCH
ASSEMBLY.
SENSOR SWITCH
ASSEMBLY.
Replace the MAIN PWB
ASSEMBLY.
ASSEMBLY.
Repair the DRAIN HOSE
ASSEMBLY.
ASSEMBLY.
Remove foreign material.
Reconnect or repair the
connector
connector
Replace the DRAIN
PUMP ASSEMBLY.
PUMP ASSEMBLY.
Replace the MAIN PWB
ASSEMBLY.
ASSEMBLY.
When pressing SPIN and RINSE at the same time after
draining, is the water level frequency 255?
When pressing SPIN and RINSE buttons at the same
time while washing, is the water level frequency
between 230 - 243 ?
draining, is the water level frequency 255?
When pressing SPIN and RINSE buttons at the same
time while washing, is the water level frequency
between 230 - 243 ?
Check the voltage between two pins while pressing
the POWER button. Is the voltage 220~240 V AC?
the POWER button. Is the voltage 220~240 V AC?
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 too high or low?
(resistance of the coil is 10-20
(resistance of the coil is 10-20
Ω)
When checking voltage between connectors during
spin, is the voltage 220~240 V AC as in the figure?
HEATING WITHOUT WATER
DRAIN MALFUNCTION
26
(1)
AC 220-240V
220~240 V
Push the THERMISTOR
tightly to the rubber.
tightly to the rubber.
When checking the THERMISTOR on the tub,
is the THERMISTOR loose?
HEATING CONTINUOUSLY ABOVE
THE SETTING WATER TEMPERATURE
WASH HEATER TROUBLE
27
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Connector
Connector
Hose
Connector
(White)
Hose
WILL NOT CIRCULATE WATER
Is the impeller of the drain pump clogged?
Are the Hose Connector and/or Hose clogged?
Is the connector disconnected, disassembled?
Is the coil of the right side of drain pump open
or short circuited? (Coil R is 18-30
or short circuited? (Coil R is 18-30
Ω)
When checking voltage between the
connectors during spin, is the voltage
220~240 V AC, as the figure?
connectors during spin, is the voltage
220~240 V AC, as the figure?
Remove foreign material.
Remove foreign material.
Reconnect or repair
the connector.
the connector.
Replace PUMP MOTOR
ASSEMBLY.
ASSEMBLY.
Replace the MAIN PWB
ASSEMBLY.
ASSEMBLY.
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