Zanussi DE 6854 Problem

[shaggs]

Hi Guys
I have a zanussi de6854 that has been fine since new 15mts ago but has now developed a fault whereby it wont heat the water.
the heater unit seems fine and has not gone open circuit as you would expect if it had gone.
Any ideas ?

Thanks
Rob :rolls:

forgot to add that the machine runs through the various cycles fine with no error signals but does not heat up

[shaggs]

Re: Zanussi DE 6854 Problem

after searching through other posts on here i have found a burnt relay pole on the pcb
it looks like zanussi under estimated the current draw
i have re soldered it and all is now working again

8) 😆 😆 😆 [/img]

[Trilobite]

Re: Zanussi DE 6854 Problem

Good for you!

Why do the electronics always seem to be the first things to go in appliances? You would have thought that, in this day and age, the manufacturers could design boards which were more tolerant of temperature/current, etc.

[iadom]

Re: Zanussi DE 6854 Problem

Not so ‘good for you’ :rolls: A word of warning, don’t go out and leave this dishwasher on. There has been more than one instance of this type of temporary repair leading to a fire in the dishwasher console panel on this model range.

Should the worst happen, your house insurance would be unlikely to cover you for any damage resulting from this repair. :lesson:

Jim.

[shaggs]

Re: Zanussi DE 6854 Problem

i have re soldered it in exactly the same way that zanussi did when they made the pcb (i have not added any bridging etc) just re soldered.
so if it goes again it should just melt the solder away as it did originally.

but what a poor design
a relay switching a 2000 watt heating element should be right next to the heater not about 4ft of wire away.

[iadom]

Re: Zanussi DE 6854 Problem

Well you can’t say you haven’t been warned. The only way to effect a proper repair to this would be to fit a new relay, or replace the PCB with a new one. The old relay can suffer from internal damage to the contacts and the resultant fire is not a pretty sight. The back of the PCB is very close to the plastic housing, if you look you may see signs of burning on it already from this initial failure.

Jim.

[shaggs]

do you have any idea of the cost or availability of a new pcb ?
and have the new ones been improved ?

[Penguin45]

Re: Zanussi DE 6854 Problem

The board is about £80 + VAT. Consider again what Iadom said – replacing the relay is a simple and cheap option – Maplins and Radio Spares should be able to find it.

Ones I have replaced in the past have a reinforcing wire soldered to the output leg to strengthen the soldered joints. No come-backs so far.

Regards,
Penguin45.

[Trilobite]

Re: Zanussi DE 6854 Problem

iadom wrote:Not so ‘good for you’ :rolls: A word of warning, don’t go out and leave this dishwasher on. There has been more than one instance of this type of temporary repair leading to a fire in the dishwasher console panel on this model range.

Should the worst happen, your house insurance would be unlikely to cover you for any damage resulting from this repair. :lesson:

Jim.

Is this what they call “Resistive Heating”?

[eddieb]

Re: Zanussi DE 6854 Problem

Hello,

I have same problem – no water heating.

Can I ask how I gain access to the heating element and PCB please? Is it through the back panel?

Many thanks.

[Penguin45]

Re: Zanussi DE 6854 Problem

Side panel for heater, control panel for PCB.

Power off, of course.

Regards,
Penguin45.

[eddieb]

Re: Zanussi DE 6854 Problem

Thank you.
Found PCB track burnt out at the relay. Have read the other notes about this common problem and am surprised that Zanussi hasn’t made some statement about the design – it’s clearly not up to the job.

I have soldered a mains gauge wire between the relay and the edge connector and will keep an eye on it (I have noted that others have got hot and burnt).

Thanks again for the help!

[shaggs]

Re: Zanussi DE 6854 Problem

eddieb wrote:Thank you.
Found PCB track burnt out at the relay. Have read the other notes about this common problem and am surprised that Zanussi hasn’t made some statement about the design – it’s clearly not up to the job.

I have soldered a mains gauge wire between the relay and the edge connector and will keep an eye on it (I have noted that others have got hot and burnt).

Thanks again for the help!

Hmm you might wana read what the experts had to say above.
if you beef up the back of the board too much you will just move the problem to either another part of the board or another part of the machine.
IMHO just resolder then if it wants to go again it wont be any worse than the original failure.

[waxintaxin]

Re: Zanussi DE 6854 Problem

Hello Guys , as Im new I will get the drinks in , whats everybody want while I am at the virtual bar 😀

Again, I have the DE6850 and have discovered the same blackened melted solder on the PCB , thanks to this site , and have re soldered the contact , amd have taken note of the fire issue

and being a H&S nutter feel I should ask , if I get a new PCB as that seems safest, although it is 3 years old and has only just gone
are newer replacement boards jazzed up to deal with this issue

as if its the same , it is no diff to my fix

I dont fancy trying to add a new relay , as this seems a bit much for me , although i did find soldering back the little bit i needed too easy

or is a new PCB designed to cope and the fault has been sorted

so what should i be thinking of ❓

Rich

[Penguin45]

Re: Zanussi DE 6854 Problem

The current replacement boards do not feature any reinforcement to the high load joints. If you buy a new board, you could do this yourself, prior to fitting……

:beer: :beer: , please.

Regards,
Penguin45.

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