Part name
Funtion
Drain Pump
Check the electric part
Drain pump consists of electrical motor, impeller, inlet and outlet.
Drain pump is a kind of pump driven by permanent magnet synchronous motor. The
motor is made with permanent magnet material, the running inertia of rotor is very small,
the stator consist of silicon steel stack and coil. When the drain pump is on power, the
rotor will be very easy to start.
Open the protecting box and take out the PCB(see the section“Part Name PCB”;
With the door closed, unplug the CON3 and ACN wires,
then use the multi-meter
Ω
shelf to measure the red wire
(EV1) and blue wire (ACN), the normal resistance is about
220
Ω
to 250
Ω.
If the measured resistance is not correct, it means the
pump coil is broken or connector is loose. In this case, we
should check the connection first. If the problem hasn’t
been solved by re-connection, we should replace the
drain pump.
If the resistance is OK, but it also can’t work, maybe the
magnetism is too weak, so we need to replace the drain
pump.
1.
2.
3.
4.
EV 1
ACN
Check the
part
machine
1. If the electric part is OK, we need to check the machine part.
2. Remove bottom board.
3. If the non-return valve is wrongly assembled, the tub will remain much water. We need to
re-assemble the non-return valve.
4. If the drain pump is working, but no water drain out or just a little. We should check the
drain hose or drain body.
27
