LG WF-T851 Service Manual page 52

12-4. Water doesn't come into the wash bowl.
Where, what & how to check?
Pressure Switch
1. Is there PE error on the display
which means pressure switch error
2. Check frequency of the pressure
switch without load if wash is
proceeding without filling.
Controller
1. Defect of controller is highly possible
if inlet valve and pressure switch have
no defects in the above.
12-5. Water fills continuously or intermittently.
Where, what & how to check?
Wrong Installation/Leakage
1. Check whether the drain hose is
laying down on the floor.
(For pump model)
2. Check where water leaks.
Pressure Switch
1. Check the pulsator is rotating when
water fills continuously.
2. If there is no defect in the pressure
swith, check whether the air hole of
the outer tub is blocked.
Inlet Valve
1. Does water fills even though it is not
energized (power is off)?
Controller
1. Does water fill immediately after the
power switch turns on before pushing
the start/pause button.
Ball Pressure Sensor
(WF-T652A, T452A, 402)
1. Check the pulsator is rotating when
water fills continuously.
2. If there is no defect in the Ball
Pressure Sensor , check whether
the air hole of the outer tub is
blocked.
Result of Check Possible Cause
Connector is taken
PE Error
off, or lead or coil is
displayed.
open.
Less then
Defect of the
26.2kHz pressure switch.
Result of Check Possible Cause
Wrong installation.
Drain hose
laying down.
Water leaks
Defect of the part.
from a part.
Water pressure is
It doesn't
not sensed.
rotate.
Air hole blocked.
Blocked.
Defect of the inlet
Water fills.
valve.
Short circuit of the
triac of the
controller.
It doesn't
Water pressure is
rotate.
not sensed.
Blocked.
Air hole blocked.
59
How to repair & settle
Reconnect the connector
or change leads. Change
the pressure switch if coil
is open.
Change the pressure
switch.
Change the controller.
How to repair & settle
The drain hose
should be hung on the
stand-pipe or the tub.
Change the part.
Repair it.
Check the tube of the
pressure swith,if it is bent
or blocked, repair that.
Repair the blocked hole.
Change the inlet valve.
Change the controller.
Check the tube of the Ball
Pressure Sensor, it is bent
or blocked, repair that.
Repair the blocked hole.