Solved
Bosch

Bosch Rcd Trip

GEGeeDee
Asked about 15 years ago 8,986 views
0

Hi

Our Bosche WFF2000 tripped our main RCD at the end of a wash (door lock had released) and now is permanently leaking live to earth. I have tried disconnecting the motor with no change so am guessing the issue is eleswhere.

Whilst I'm normally happy to have a go at most things, this seems a little complex without the necessary equipment or going round unplugging everything using trial and error.

Is anyone aware of anything obvious (and relatively simple with just a multi-meter) to check?

My feeling is that is is getting on a bit and needs replacing.

Solution Summary

AI-generated from this discussion

This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.

Bosch WFF2000 trips RCD with suspected earth leakage

The problem
A Bosch WFF2000 washing machine tripped the main RCD at the end of a wash, after the door lock had released, and then appeared to have a permanent live-to-earth leak. Disconnecting the motor made no difference.
Likely cause
An insulation fault within the machine was suspected. The accepted reply referred generally to a possible PCB-related tripping fault, but no specific failed component was confirmed.
What fixed it
The accepted advice was that proper fault-finding requires an insulation test meter capable of applying 500V DC. No simple multimeter-only check or specific repair was confirmed in the discussion.
Checks to try
  • Motor disconnected with no change
  • RCD trip occurred at end of wash after door lock released
Parts or tools mentioned
  • Multimeter
  • Insulation test meter (500V DC)

Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.

Professional repair recommendedGenerated 14 Aug 2026 · AI summaries can make mistakes — read the full thread below.
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1 Answer

Accepted Answer
0
WH
WhitegoodshelpVerified Engineer
Answered about 15 years ago

As you say, to troubleshoot a pcb tripping fault you need a proper insulation test meter capable of putting 500 volts (DC) through the machine. The most common causes of a washing machine fusing or tripping the electrics are mentioned here - Washing machine is fusing, or tripping the electrics

Whitegoods Help — appliance repair expert and forum host.

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