Look at the carbon brushes in the motor. Theyre graphite blocks which transfer mains power to the copper segments of the motor. v. cheap parts and easy to replace. Look at the copper segments to check for burning or pitting. If the copper segments are burnt or damaged its a replacement motor or a replacement armature if you can source one. May be a fault in the motor drive circuit board? Possibly also a short circuit in the water heater.
The trip mechanism works in a shorter time than it takes the plug fuse to blow. If the trip wasnt present the fuse would go.
WASHING MACHINE SERVICE AND REPAIR MANUAL.
cut and paste the following address into your browser for more info. www.2ndwave.co.uk/manual.html
dan
February 2008