DRAIN NOT DETECTED OR SLOW DRAIN ERROR
Cause
Drain not detected or poor drain
Solution
Check the Drain Pump for damage.
Drain hose for kinks or blockages.
Drain pump sump for debris.
Check the Water level sensors.
DETAILS BELOW:
The Drain Pump is a BLDC type of pump and our test model had resistance of 3.1ohm on all three legs.
Voltage read 12Vac on all three combinations of the wires at the pump.
Picture of the drain sump cover removed and the bottom of the cover.
The water level sensor receives 12Vdc from the main board, and when water reaches the probes, the voltage will drop to let the Main PCB know the pump needs to activate. If there is no 12Vdc from the Main PCB replace the Main PCB. Example from WKHC252 check your machines individual diagram.
When dry the water level sensor will read 10-12Vdc, when wet the voltage will drop. When testing we read 2Vdc when the sensor was wet.
Check the drain line here to make sure there is no damage or debris.
