Zanussi ESL6115 911939201/02 pcb fault?

Don’t usually get pcb faults on these, except the heat relay.

Had one a few days ago, the chap said the program was stuck and he could not change or start a new prog. Got there and he went to show me, “hey presto” it worked fine.

The next day had the same type of machine with the same reported fault at a different house.
I canceled the prog and tested it, could not fault. As i was about to go it sounded like the drain pump cut out for a minute during the start sequence and then just powered back up a min later without touching anything.

Anyone had similar?
Thanks for any help
Graeme