Re: Siemens WM16S79CGB/20
Try the usual reset procedure shown for the Bosch machines (i.e 6 0’clock, hold spin button etc…). But if the controls are dead and only the error code shows (E21) then disconnect the motor plug, switch on the power, hold any option button and then turn selector switch on one turn. All controls should fire up at that point, turn off, plug motor back in and away it should go!…………..fingers crossed. 😡