Well it’s not often i get stumped i have to say but this one really has me scratching my head!
The problem is simply over filling…which doesn’t happen at the start of the cycle but more usually on the third or even fourth fill.
These take an initial charge of water up to the pressure switch level then top up presumably a timed quantity after that. First course of action was a new pressure switch assuming it was out of adjustment then a new pcb when that didn’t work…problem remains.
Does anyone have the tech on this one please, or have you come accross this before?