Gorenje WA7215BK – intermittently tripping power

Afternoon

I have had my Gorenje WA7215BK machine trip the electrics a couple of times. it appears to be intermittent so im wondering what i can check

This is what ive checked so far

-Had the back off the machine and can see no evidence of leaks from the outer drum
-Cant see any signs of water leaks from around the bearings or from where the thermostat is
-Checked all the wiring i can see in the back and in the top of the machine, cant see any frayed wires
I had a look at the motor, im not sure if the motor uses carbon brushes or not but when i ran the machine i cant see any sparks indicating worn carbon brushes

I ran the machine both unloaded and unbalanced to see if vibration was causing any of these problems but it all looked OK

Does anyone have any ideas on what else i could check?