Zanussi W/D ZWD16270W faulty, running empty pump constant,

[neon_3SP_glow]

Firstly Hi 😀

I am an engineer awaiting verification for a trade account.

I visited two Zanussi Washer dryers today..

ZWD16270W
ZWD14270W

the same machine but for the maximum spin speed. Both had similar faults. Both are less than 20 months old.

The first of which will not start any washing programme. After a wash/spin/rinse/drain prog is selected, the doorlock locks followed by a brief period of the empty pump running, then the doorlock unlocks and the start/pause indicator light flashes. The dryer programe worked fine, the drum/motor turned and the fan ran.

The customer explained that when this first happened there was still water in the drum. not sure if that has any relevence yet.

I tested all of the valves, heaters, stats pumps,motors, everything seemed ok. I wonder if the programe board behind the front panel is to blame?

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The second machine went wrong whilst on a drying programe. Now the machine will simply run the empty pump and the door will lock. This is the same no matter what programe is selected. Once again I tested all major components and they seemed ok. No err code is shown Once again I’m begining to think It may be the Control board located behind the front panel?

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This model of machine is a nightmare for me, the ability to select seperate parts of the programe is vital for diagnosing faults, these machines seem to simply shut down all together, making fault finding a stab in the dark!!!

Any advice will be greatly appreciated 🙂

[BobHope]

Re: Zanussi W/D ZWD16270W faulty, running empty pump constan

Hi Neon

as this is in a public forum the same warnings about unplugging the appliance before any work is done applys to you.

i and the rest of the lads will look forward to seeing you in the trade forums.

both fault relate to earth leakage on one or more heaters.

Bob.

[gandh1]

Re: Zanussi W/D ZWD16270W faulty, running empty pump constan

i shall point you to this – sounds like the exact same problem i had with an 18 month old washer of the same generation http://www.ukwhitegoods.co.uk/modules.p … ic&t=44254

[neon_3SP_glow]

Re: Zanussi W/D ZWD16270W faulty, running empty pump constan

Thank you both for the advice.

Concerning the m/c that went faulty whilst on a drying cycle, i shall investigate the dryer heating circuits further and try to locate/confirm the leakage.

Would I be correct in assuming that if a fault occurs on this generation of machine, the control board will realise and act ‘stuck’ in it’s last position? If this is the case, does the board always need resetting after a fault?

thanks again.

[Penguin45]

Re: Zanussi W/D ZWD16270W faulty, running empty pump constan

There is a diagnostic system built into the electronics which would help you with a formal diagnosis of the machine. You still can’t beat getting the megger out a testing properly…..

The pcb will reset when the problem is cleared.

Penguiin45.

[neon_3SP_glow]

Re: Zanussi W/D ZWD16270W faulty, running empty pump constan

ah Thanks again, I see.

Would I be correct in assuming Zanussi engineers have a piece of kit to perform the diagnosis, such as an external module? or is it a case of accessing the diagnostics contained within the machine. Either way a physical test should locate the fault, yes?

As far as i remember no heating circuits were open circuit or down to Earth.

I am going to see both these machines again tomorrow. I will further post any outcome….

And thanks again for all advice, I have had no other unsolved problems recently, I’m not giving up yet!! I guess as independant engineers, we are likely to encounter problems concerning the computer systems of new models. A way for the manufacturer to ensure they get paid for the repairs!!!

[Penguin45]

Re: Zanussi W/D ZWD16270W faulty, running empty pump constan

Moved to Trade Tech……

Tech bumf sent.

Welcome to the asylum.

Chris.

[neon_3SP_glow]

Re: Zanussi W/D ZWD16270W faulty, running empty pump constan

With regards to ZWD14270. This machine would only run the empty pump when a prog was selected…..

I accessed the diagnostics… last three err codes E12,EF1, E22. I ran the machine through the diagnostics and found only one fault in real time…. E52, motor, wiring or PCB. Took motor off, checked all relevent connectors and wiring, took brushes off, put back together, no faults found. Tried the machine and found i t working as it should with no faults.

My guess was a sticking carbon brush, or loose connection, I have a funny feeling this will not be the end of the matter though!!!

[neon_3SP_glow]

Re: Zanussi W/D ZWD16270W faulty, running empty pump constan

RE : machine pauses after a few seconds / drying works.

Last error… ed4 – PCB, wiring, Drying module.

whilst perfrorming diagnostic test.. #9 dryer completed ok. all other tests show ed4.

guess that rules out the drying module. wiring? its 14 months old, looks like iits brand new.

expensive to order the pcb just in case though.

any thoughts?

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