These can be tricky at best to fit as there is a knack to it in most cases and the door seal dryer vent has to be connected to the dryer portion of the machine whilst fitting. Not too easy to fit.
Modern machines typically beep and flash lights or show an error code on the display screen to indicate that there is a problem. The error code will lead a technician to the source of the fault. Beeps & lights flashing may happen in a sequence again to indicate...
If your machine has not drained or has stopped for some reason the door will stay locked as a preventative measure to avoid a leak, however its also possible that the locking device itself is faulty and may need repair or replacement. Firstly, assess whether there is...
If you live in a hard water area or your machine is getting on in age it may need its heating element or thermostat replaced. Sometimes its a simple wiring fault or PCB issue. Best to call the experts who will fix this.