Your condenser unit on the front bottom left corner may be clogged up and causing water to back up around the fan and heating element behind the rear panel.
Take condenser unit out and give it a good clean removing as much fluff as possible.
If the heating element senses damp on it, then it will trip the electric.
The back panel which is at 45 degree angle on back. I took this off and sure enough there was water in there.
Wipe away all water and use an ever so slightly damp cloth to remove as much dust stuck to the metal as possible.
I used a hair dryer for about ten minutes fanning over the heating element and circular fan. Don't rush this. Take your time to make sure all signs of damp have been removed from heating element before putting the back panel back on.
After carrying out the above my machine worked fine and no longered trip electric.
It is a pain, but to prevent this problem happening I suggest cleaning condenser unit about once a week if you have alot of washing.
dave, December 2008