An "OE" error indicates that the MAIN BOARD received data-feedback from the WATER LEVEL SENSOR---that an *overflow condition* occurred (too much water in tub).

When this error is detected---the DRAIN MOTOR will automatically begin pumping/draining the water from the washer until the water level is below the *overflow" level.

Usually the fault will be caused by one of two components:

1) Faulty WATER LEVEL SENSOR.

2) Failing/faulty WATER INLET VALVE---keeps filling water intermittently when valve should be "off".

There are two sets of WATER VALVES---one for Hot Water and one for Cold Water.

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Source: Samsung WF328aaw-02 - Keep Losing Main PCB - OE Error