Re: faulty heating element Bosch Classixx washing machine?
With the appliance unplugged, locate heater (front).
With a multimeter on resistence reading, read across the poles of the heater (with the wires feeding detached), it should readd app 20 – 30 ohms.
Earth leakage can still be apparent even if the heater reads ok, but a specialist meter would be required to read this.
I would still put money on the heater causing the trip out IMHO 😉
Greg