Solved
Zanussi

Zanussi Trips Rcd

TGtg75
Asked over 13 years ago 6,465 views
0

Hi,

Im after a bit of advice on a Zanussi WDT1085 TurboDry.

The machine starts to fill with water, then after about a minute it trips the RCD on the board. If I then click the dial on a bit so that its mid way through the cycle, it will run fine and complete the wash.

Im thinking this might be happening when the heating element kicks in...can anyone confirm this please? Just want to make sure before I buy a new element.

If anyone has a link to a manual that would be really appreciated too!

Cheers :-)

TG

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.

Zanussi WDT1085 TurboDry tripping RCD early in wash cycle

The problem
A Zanussi WDT1085 TurboDry started filling with water, then tripped the RCD after about a minute. If the programme dial was advanced to later in the cycle, the machine would then run and complete the wash.
Likely cause
Most strongly supported diagnosis was a heating element insulation fault to earth, or less likely an insulation issue in the nearby heater wiring. Damp/condensation in the shed was considered but the original poster later reported no condensation or wiring fault found.
What fixed it
The accepted advice was that the heater was the main suspect and that proper diagnosis would normally need an insulation tester. The original poster checked for condensation and obvious wiring issues, then replaced the heating element.
Checks to try
  • Observed that the motor and later parts of the programme, including spin, ran normally
  • Considered whether the fault occurred when the heater was energised
  • Checked for condensation inside the machine/shed
  • Checked nearby wiring for obvious damage or shorting
  • Planned to test with a megger/insulation tester
Parts or tools mentioned
  • Heating element
  • Megger/insulation tester

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

Confirmed fixedGenerated 17 Aug 2026 · AI summaries can make mistakes — read the full thread below.
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8 Answers

Accepted Answer
0
WH
WhitegoodshelpVerified Engineer
Answered over 13 years ago

You can't get repair manuals for them. If the motor runs ok on the later section of the programme and spin then I would agree that the heating element is number one suspect, they often go down to earth. Without a proper insulation test meter though you can't diagnose it unless you found a wire near or on the heater had come off or was shorting out somewhere. The only thing you could try without a meter is to speculatively replace the heater.

I have an article on tripping electrics

Whitegoods Help — appliance repair expert and forum host.
0
TG
tg75
Answered over 13 years ago

Thanks Andy

Will try and borrow a megger and check the element and the wiring nearby.

This is gonna be a laugh though; the shed its in is tiny and I put the machine in there before I fitted the door frame and door :D

0
WH
WhitegoodshelpVerified Engineer
Answered over 13 years ago

Sheds are normally a bad place for washers but I now you wouldn't have it there if there was room elsewhere. If it's damp in there it won't help insulation, condensation can be a problem too.

Whitegoods Help — appliance repair expert and forum host.
0
TG
tg75
Answered over 13 years ago

Yeah, you're right Andy, no room elsewhere. It's a brick shed and is reasonably dry, but I will check inside for condensation.

Cheers!

TG

0
WH
WhitegoodshelpVerified Engineer
Answered over 13 years ago

When appliances are in places which get very cold the moisture they create when running can condense inside and cause problems although the fault you describe sounds more like the element has developed low insulation or there's an insulation problem with the heater wiring.

Whitegoods Help — appliance repair expert and forum host.
0
TG
tg75
Answered over 13 years ago

Job done!

No condensation or dodgy wiring but it's a funny job! Ended up with the machine in the garden propped up by the tool box to get to the element. Belt off and some brut force to move the drum over a bit allowed me to *just* get it back in. I'm sure I had it upside down at one point too!

Took about an hour all in :-)

Have photos if anyone needs a steer!

Thanks for the help Andy!

TG

0
WH
WhitegoodshelpVerified Engineer
Answered over 13 years ago

Nice one Feel free to post pics. I take it you managed to replace the heating element? It can be tricky to get the element out if you don;t realise how they are secured in place.

Whitegoods Help — appliance repair expert and forum host.
1
TG
tg75
Answered over 13 years ago

Yeah I managed to swap it out... Was tricky due to the angle you have to put it in at because of the machine casing.

Been off the tools for a few years now so enjoyed getting my hands dirty again :-)

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