I visited a Hotpoint UE89X oven which had a short circuit in the fan oven motor ( motor looked as if it had over heated) this had then blown the PCB. I replaced both parts with genuine items, the oven worked ok three times at the correct temperature but then the same thing happened with the two parts. I’ve tested elements and bulb they’re ok even if they weren’t I can’t understand why the motor would go short circuit again.
Any ideas appreciated
Thanks
Michael