Tripping tumble dryer

RJH

unread,

Nov 20, 2022, 4:45:37 AM11/20/22

to

I've a Beko DCU 8230 tumble dryer, about 10 years old, tripping the RCD at or
near the end of a cycle.

I replaced the mains interference filter on a recommendation about 5 years
back after the same problem, and it's been fine since. I'm fine with replacing
it again, but I don't understand why this happens at the end of a cycle. If it
had failed wouldn't it happen on switch-on?

Any tips on what else I should be looking for? I keep the filters and
condenser clear/clean. It's used no more than say 10 times a year.

--
Cheers, Rob, Sheffield UK

Andy Burns

unread,

Nov 20, 2022, 4:50:24 AM11/20/22

to

RJH wrote:

> It's used no more than say 10 times a year

cobwebs on the elements?

RJH

unread,

Nov 20, 2022, 5:12:15 AM11/20/22

to

Yep could be - I'll replace the mains filter (again, as a precaution) and have
a good look round inside. The machine is in a dryish cellar - so that won't
help with curious insects.

Jeff Layman

unread,

Nov 20, 2022, 5:33:59 AM11/20/22

to

I posted here 3 or 4 years ago about the same problem with our DCU7230.
It's been ok for the last few years, but now you've posted it looks like
it might reoccur! I still don't understand why the RCD tripped at turn
off. I guess there's some sort of short-circuit occurring, but how and
why seems very strange.

--

Jeff

Theo

unread,

Nov 20, 2022, 6:56:22 AM11/20/22

to

Jeff Layman <Je...@invalid.invalid> wrote:
> I posted here 3 or 4 years ago about the same problem with our DCU7230.
> It's been ok for the last few years, but now you've posted it looks like
> it might reoccur! I still don't understand why the RCD tripped at turn
> off. I guess there's some sort of short-circuit occurring, but how and
> why seems very strange.

Is there some component which is switched in at the end of cycle? Perhaps a
cooling fan or something? It is possible the insulation is weak on that
component causing earth leakage, but it wouldn't cause a trip until it's
energised.

Theo

Fredxx

unread,

Nov 20, 2022, 8:03:51 AM11/20/22

to

I had an issue with turn-on, which I presumed was due to spike in
suppressor current that passed to earth at switch-on.

Removing a connection to earth solved the problem.

The Natural Philosopher

unread,

Nov 20, 2022, 9:39:12 AM11/20/22

to

On 20/11/2022 11:56, Theo wrote:

Door release?

--
“A leader is best When people barely know he exists. Of a good leader,
who talks little,When his work is done, his aim fulfilled,They will say,
“We did this ourselves.”

― Lao Tzu, Tao Te Ching

Jeff Layman

unread,

Nov 20, 2022, 11:48:41 AM11/20/22

to

On 20/11/2022 11:56, Theo wrote:

It was definitely the filter. At the end of the drying cycle I
immediately switched the drier off by its push-button mains switch. This
is a double-pole switch, and the only component between it and the mains
supply is the filter. The fault disappeared when a new filter was
fitted, and it is still fault-free almost 4.5 years since replacement.

Perhaps when it cooled down it short-circuited somehow, but it didn't
seem that warm to me to be affected by cooling down.

--

Jeff

RJH

unread,

Nov 23, 2022, 2:08:22 PM11/23/22

to

Just FYI, the old replacement filter had burst; lots of sticky fluid. And that
was a replacement I got from espares. Althought he photo on their site showed
a different (possibly updated) design, they supplied a filter identical to the
original.

Anyway, I got the replacement direct from Beko this time, and it looks
completely different. The dryer works, but I won't know for sure until I've
saved up enough to put it on a full cycle . . .

Jeff Layman

unread,

Nov 24, 2022, 2:57:22 AM11/24/22

to

This is the one I used:
<https://www.amazon.co.uk/dp/B00LZWBAWO/ref=pe_3187911_185740111_TE_item>
I can't remember if that's what it looked like or not! The design does
seem to change now and again

It's been fine for 3 years (not 4.5 as in my reply). The original which
failed showed no physical damage at all.

--

Jeff

RJH

unread,

Nov 24, 2022, 2:05:58 PM11/24/22

to

On 24 Nov 2022 at 07:57:18 GMT, Jeff Layman wrote:

>> Just FYI, the old replacement filter had burst; lots of sticky fluid. And that
>> was a replacement I got from espares. Althought he photo on their site showed
>> a different (possibly updated) design, they supplied a filter identical to the
>> original.
>>
>> Anyway, I got the replacement direct from Beko this time, and it looks
>> completely different. The dryer works, but I won't know for sure until I've
>> saved up enough to put it on a full cycle . . .
>
> This is the one I used:
> <https://www.amazon.co.uk/dp/B00LZWBAWO/ref=pe_3187911_185740111_TE_item>
> I can't remember if that's what it looked like or not! The design does
> seem to change now and again

Yes, that was the design pictured with the last replacement - but they sent
the original type.

>
> It's been fine for 3 years (not 4.5 as in my reply). The original which
> failed showed no physical damage at all.

This was the original type fitted to mine:

https://www.ebay.co.uk/itm/191044469085

Both leaked. This is the new one I just fitted:

https://www.bekospares.co.uk/tumble-dryer/dsc64w-7183281800/anti-interference-filter-iskra-knb-7425/product.pl?pid=5007186&path=191107&refine=filter&model_ref=2496913

Fingers crossed :-)