Water Does Not Drain - LG WT-H800 Service Manual

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7) Water does not drain.

Where, what & how to check?
Drain Pump
1. Check whether there is drain pump
working sound.
2. Check resistance between terminals if
there is no working sound of the drain
pump.
3. Check connection parts of the leads if
there is no working sound and its
resistance is normal.
Drain Hose
1. Check whether the drain hose is put in a
narrow space and kinked.
2. Check whether the drain hose is
blocked by foreign objects. It may
happen in case of the hose is a little
kinked.
8) Water drains thought it is not the time of drain.
Where, what & how to check?
PV Case
1. If water drains though the drain motor is
normally returned, check whether PV
asm is blocked by foreign objects or the
bellows in the PV asm is deformed.
Controller
1. Check whether the drain motor or the
drain pump works immediately after
power is turned on.
Result of Check
There is pump
Drain pump is blocked by
working sound.
foreign objects.
It's coil is open.
Defect in connection
Defect in connection part.
part.
Connection part has
Defect of the controller.
no defects.
Kinked.
Defect of installation.
Blocked.
Blocked hose.
Result of Check
Blocked.
Bellows deformed.
Defect of PV Bellows.
Works.
Defect of the controller
(Triac defect)
47
Possible Cause
Disassemble the drain
pump cap and remove the
foreign objects in the pump
casing.
Change the drain pump.
Repair defected connection.
Change the controller.
Reinstall so that it should
not be kinked.
Remove the objects and
reinstall so that it can't
be kinked.
Possible Cause
Remove the objects in the
PV asm.
Change the PV bellows.
(The bellows may swell up if
it contact petroleum or
petrochemical substance
because it is made of rubber)
Change the controller.
How to repair & settle
How to repair & settle

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