Can you post the make and model number of the appliance please?
Is there a clock/timer on the machine?
Is it flashing?
Is it on Auto?
Sorry, can you answer all of the questions I asked?
Thanks for that.
I've had a good look at the wiring diagram and the only thing I can see that would cause this is a faulty door switch.
You would need to isolate the power to the appliance first.
Disconnect it from the electrical supply.
The door switch is behind the right hand panel so you need to take the appliance apart to gain access to it.
Check the switch, replace if necessary and try the machine again.
Hope this helps
Let me know how it goes or if you need more help