Bosch Series 4 8Kg WAN28281ES/25 Error Code E32 – 10 drainage issue

[Mikey T]

Morning, thanks for your comments.

The voltage on the Neutral is actually common throughout the house a fact I was unaware of. I’m getting my sparkie out on Saturday to look at this and install an Earthing rod or two to eliminate if required, however he doesn’t think this will be the cause.

Personally I really can’t see this being the root cause of my machines issues as it’s always been the case/constant since it’s installation and it’s in the same double socket as the Bosch dishwasher next to it which hasn’t had any issues whatsoever. I did suggest trying an extension cable to a differing socket but he wasn’t having any of it and in fairness the differing socket would have the same N-E fault so he would’ve just used that as the excuse to leave anyhow.

Like I say, he didn’t do any further testing at all and no pipes were removed/inspected. Randomly the first time he tried the machine after fitting the new pump everything seemed to be OK, he even got me to sign his PDA as the job was ‘completed’. After I signed and he was showing me that everything was OK the problem was back in all it’s glory. Then it was very much a case of ‘pump make noise, I replace pump, new pump make noise, your electrics, bye’

One good thing is it will now be on his report that it’s had a new motor so when the problem persists post N-E rectification they will have to look deeper and come up with a differing plan. Hopefully I will be booking another engineer visit on Saturday once the the electrical works have been completed.

Kaibart, I live in Greater Manchester, however I’m lucky enough to spend a couple of months a year in Spain, this machine is actually in Murcia, Spain.

The missis is extremely happy about the additional week or so of hand-washing 🙂

As soon as I have any further I will make sure to post.

Thanks again for all your help!

[electrofix]

dont know about spanish electrics but in the uk the supplier can cross bond earth to neutral in the meter cupboard to stop this voltage. The neutral is bonded in the local substation to a large earth plate and the voltage difference you are getting can be down to local soil conditions between your house and the substation

As you say its nothing to worry about and the person you should be asking is your electric supplier to find out if they use a syatem called PME ( protective multiple earthing)_ in your area which will be an indication of soil conditions

wont affect the machine and as long as you have an RCD fitted there are no safety issues

Dave

[Mikey T]

Thanks Dave, great knowledge.

We’re ‘off-grid’ and run completely from Solar and batteries – the joys of southern Spain.

Our sparkie has been out and remedied the problem, he’s just installed another earthing rod near the consumer unit and we’re now reading 0V on N-E

Would you like to guess whether the machine problem persists?…….

Answer; I’m contacting Bosch again for a follow up visit. Sadly it’s 3 kings holiday over here at the minute, i’ll post again with any further news.

Thanks again for all the help!

[kaibart]

I thought you weren’t in the UK by the model number on machine with it not being uk and being es in the enr number and then not fixing it under goodwill

[kaibart]

In Europe they generally have a more laid back approach with regards a breakdown on the appliance, I know smeg only have 4 people I the call centre for the whole of Italy mental I know

[Mikey T]

Good evening gents, a quick update. Apologies it’s taken a while, but for varying reasons today has been the first day testing has been possible. The good news is that it’s fixed! YAY! I now have a slightly less p!ssed off missis, only slightly.

What was the machine fault? what did they replace to fix the machine? nothing! not a thing! so why is it now working?

The answer is so random that I would defy anyone ‘off site’ to be able to diagnose, I feel bad taking up your time/mind space, especially given the time of year my fault occurred, so apologies in advance!

What caused the issue?

It was a power fault after all! so maybe it wasn’t just a poor excuse from the engineer to leave on the initial visit (apologies to the engineer for my potential scepticism!). It turns out, my inverter (the brains of the solar system) unbeknown to me had an overnight automatic firmware update. That shouldn’t be an issue as it should have retained all previous settings, it is after all an update! Turns out however this was the root cause of the problem!

On the initial visit when the engineer checked the socket he saw the slight Neutral-Earth issue (3V) turns out this wasn’t the actual problem, but it did at least point him in the right direction on the return visit – so maybe it was an excuse on the initial visit?

The update had randomly changed the AC output frequency just enough to cause the issue with the drainage pump. The first thing he did on the return visit before checking anything with the machine itself was to test the electric. “Your power is still the problem” I thought this was just another excuse. Thankfully as we’d been having some problems with the solar (because of the unknown update) the solar engineer was here at the same time. The Bosch engineer spoke with the solar guy, got him to rectify the output frequency issue and the problem disappeared.

Again I can only apologise for essentially posting an almost impossible conundrum.

I guess at least it teaches to check the electricity supply fully if you have a random issue.

Thanks again for all of your help, you/this forum have been great – kudos to you!!

Best wishes for 2024!

[electrofix]

problem for us as engineers is we assume the supply frequency is correct. would not have thought of that one
unless
it was on a ship , have had machines cause problems on a 60 Hz supply on some ships. As soon as we bring them ashore they are fine

Dave

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