Faulty Diplomat Dishwasher - tripping mains fuse

Question

Hi

I have had above integrated dishwasher which is intermittently tripping the mains fuse.

Power is getting to dishwasher and the washing cycles work until a certain point (not the same time) where a loud bang can be heard and the main fuse is tripped. Reset the main fuse and power still gets to the dishwasher and it works again.

It has just started to trip the fuse when its not running any cycle (just when power is getting to it).

I've checked the fuse on the spur and it looks ok. I have yet to move the dishwasher out as its integrated but wondered if anyone had any ideas before I call out a plumber!!

Tks
Barry