Re: aeg washer dryer
E40 family of fault codes are door interlock related codes. Look for the following:-
1) Interlock faulty;
2) Wiring faulty;
3) PCB faulty – Although it is worth removing and refitting the PCB connection plugs as oxidisation of the PCB edge connectors is a common fault. Removing and refitting is enough to scrape the connections clean. If that doesn’t cure it, then the power triac for the interlock will be faulty meaning, unfortunately, a new PCB.
Hope that helps,
Steve.