Re: zanussi auto flashing E90
Communication fault between user interface and PCB. (fascia PCB and power board). Usually the connections on the fascia are oxidised and just need cleaning.
Remove the fascia, disconnect the wiring plug, carefully remove the board from the fascia and clean the edge connections. Then refit into fascia and gently pinch the plug with pliers to tighten it before fitting. Refit fascia and all should be OK. If not, check the loom between the fascia and the main PCB. If that’s OK, then it’s PCB failure.
Hope that helps,
Steve.