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Bosch Dishwasher Tripping RCD Adaptor

Postby j0nr » Mon Nov 08, 2021 9:33 am

Hello all,

I have an integrated Bosch SGV46M03GB dishwasher. Probably quite old, was already in the house when we moved in 3 years ago.

Recently started tripping the RCD adaptor (plug in one, not integrated) mid cycle.

I have changed the RCD, no difference.

I have changed the heater element, no difference.

If I run it on a rinse cycle, I believe no heating is involved and it runs OK. But any cycle where it warms up it trips.

After it has tripped I have to wait for it to cool down before the RCD will reset.

Can anyone offer any other suggestions to try please? Inside (underneath where pumps etc are) looks clean, no signs of leakage.

Many thanks
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Simply Build It

Postby j0nr » Sat Nov 13, 2021 11:44 am

OK so I think I have narrowed it down.

I stripped the Co trol board out of its plastic housing and bingo, there was a desoldered leg on one of the relays. I resoldered it and thought I'd done it. It ran for a lot longer this time, but then it still cut out. So it feels like it is the control board.

Trouble is the control board module replacement is like £250+ wtf? That's half the price of a good new machine! How is that encouraging people to not throw perfectly good things away? It's not even anything special looking, just a pretty ordinary looking PCB.

Might try replacing just the relays...
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Postby ericmark » Thu Nov 25, 2021 8:56 am

Dish washers do seem to last a long time, think on about 3rd since 1980 when we first got one, one was short lived, but looking at around 20 years so very common to find when it finally goes wrong, parts no longer available.

Last one the plastic had become brittle. It worked, but door falling apart. I would guess at around 25 to 30 years old as we got it second hand off daughter.

Must have had at least 3 washing machines in that time, same with tumble driers.

The problem is when so old you change one part, then another part fails, this is true with many white goods, did fit new pumps in the washing machine, but in the main once one thing fails time for new.

The major problem is they are too heavy and bulky for more people to take to a repair shop, so the repairers tend to be mobile, so looking at a minimum charge to cover travel.

I had a small freezer go wrong, I simply could not buy parts local, part cost around £5 but to get fitted around £60 and whole unit cost £95.
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