Adexa commercial dishwasher blowing internal fuse when put onto the wash cycle.

[k281rrn]

I have an Adexa dishwaser (7kg EMP.500 under counter style) that fills, heats and empties ok but has stopped working on the wash cycle. I replaced the internal 500ma fuse and it worked for a few minutes on the wash cycle but blew the fuse again.

Ive chcked the capacitor is working using a battery and there is continuity across the motor and its showing around 29ohms so seems ok.

Cant see any obvious damage to components and checked there are no blockages or hair around the motor impleller.

Any suggestions apart from calling in 'the man'?

 

[Avo Mk8]

Any suggestions apart from calling in 'the man'?

I don't know anything about that particular commercial machine, but from the interweb there seem to be a multiplicity of pumps in it - drain pump, detergent pump, rinse aid pump, washing pump. I gather the drain pump runs from time to time during the washing cycle to keep the water level correct, so it could be a fault with drain pump or electronics, or something else. And the value of the fuse that's blowing suggests it's in a control circuit, but who knows?
Unless you are able to obtain a circuit schematic, and/or the manufacturers fault-finding guide, I think it's time for "the man"