LG LDB4548 Series, Service Manual

Page: 45 / 120

For Authorized Service Technicians For Authorized Service Technicians
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EXCESS ERROR
displayed
Condition
water fills above normal
level(automatically
drainpump operated.)
1) the inlet valve is damaged.
2) the controller is damaged.
3) after Replace the pcb, still same
error code is displaying.
1) Replace the inlet valve.
2) Replace the controller.
3) Replace the hole sensor.
THERMAL ERROR
displayed
Condition
thermistor resistance
output abnormal
1) wiring connection is oK?
2) the thermistor is oK? 1) check and reconnect the wire.
2) check the electric resistance of
thermistor.
HEATER ERROR
displayed
Condition
the water is not heated
or the temperature in
the tub is overheated to
over 194℉
1) wiring connection is oK?
2) the inlet water temperature is very
high.
3) the thermistor is damaged.
4) heater is oK?
5) the controller is damaged.
6) the Relay circuit is oK?
1) check and reconnect the wire.
2) check the temperature.
① if the temperature is displayed,
adjust the inlet water temperature
to 120℉ .
3) check the electric resistance of
thermistor.
4) check the electric resistance of heater.
Replace the pump casing assembly.
5) Replace the controller.
6) Replace the Relay circuit.
MOTOR ERROR
displayed
Condition
the motor is
workingabnormally
1) wiring connection is oK?
(washing motor and controller)
2) the impeller of washing pump is
locked.
3) is the washing motor is oK?
4) the controller is damaged.
1) check and reconnect the wire.
2) Replace the pump casing assembly.
3) check the electric resistance of
washing motor.
4) Replace the controller.
VARIO ERROR
displayed
Condition
the position of vario cam
isnot properly
1) wiring connection is oK?
2) does the vario s/w assembled
properly?
3) is the vario motor operated
properly?(range is 12~15 )
1) check and reconnect the wire.
2) Reassemble vario s/w.
3) Replace the vario motor.