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

[Mikey T]

I was hoping something similar, sadly not!

To add insult to injury I thought it would be in warranty as it took over 3 weeks to deliver (purchased from the internet). I suggested that it was a little unfair to start the warranty before I actually had the equipment but they just kept stating Bosch warranty is the date of the purchase/invoice, not delivery. Still, they offered me an extended warranty for £18 per month (minimum term 12 months)

[electrofix]

well dont know where to go from here

assume when sump hose was off the drum outlet was clear

so we have a clear sump hose, a new pump and filter unit , a clear outlet hose

there is nothing left

apart from an air lock or the highly unlikely faulty board

the only way of checking for board faults is to supply the pump direct from the mains. it means making a lead to do it with a 3 amp fuse in the plug

assume the outlet has no extension on it

did water come out of the side hose. The outlet hose has a hose as it exits the rear panel. this is probably is an anti syphon hose but may also stop air locks

have you tried feeling for pressure in the outlet hose. feel it just as it come out of the machine and alss as it come up inside at the rear. be aware of any electrical connection you might touch

Dave

[Mikey T]

Thanks Dave, I hope you had a great dinner with your friends!

The drum outlet hole is pretty small so it’s very difficult to get anything in to check other than slightly bent fingers, this morning after I removed the sump hose I stood the machine back up and moved it about in an attempt to rock anything out, nothing. When I replaced the sump hose there was still nothing I could see/feel.

Please note all of my following thoughts/assumptions are based on nothing more than complete ignorance – I’ve been proven wrong countless times!

The sump hose and ball are 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} foreign object free and spotless – I reckon it would pass for a new part. I assume that if anything were to be blocking the drum outlet/sump hose inlet then the pump housing wouldn’t have water when in fault and it wouldn’t drain freely when manually emptying post fault?

Airlock, I really don’t think there’s an airlock, my assumption being that I wouldn’t have heard the air coming from the outlet pipe when I was filling with water to complete the drain test. Also, all of the pipes have been taken off and cleaned a couple of times now and there has been no difference to the fault.

Could I check to motor by using your method when it’s not in the machine? The reason I ask is that you said it needs to have water pushing back on it to actually function and as both motors are testing the same on the multimeter I could test the original one first.

Could I check the board/controller by checking the voltage on the motors wiring plug? I assume I should just see voltage straight away on the drain test.

The outlet does not has an extension on it.

Water coming from the anti-syphon hose. It most certainly does, I found this out the first time I’d removed it to clean/test the outlet pipe and made a mess of the floor. I was further reminded this morning when I made the exact same mistake.

The Anti-syphon hose from the top of the outlet pipe to the top of the drum was removed and blown through – that’s fine.

There is nothing coming from the outlet pipe at all, I have split the pipe where it comes out of the machine (where the anti-syphon pipe is) and there is no pressure/air/water flow to that point from the pump. Assumption being that the pump is not energising/spinning the impeller. Water is proven to be in the pump chamber (when I removed the filter cover mid drain test) and the pipe between the pump and the top of the machine is clear (with the possible exception of the coin theory – although it has had irrigation pipe all the way through it) I think that if there were a coin present then I would have a little something when the pump spins up and before the coin then blocks the pipe?

Sadly I really don’t think that there is any pressure build up in the outlet pipe at all.

Again, the noise which is on the video is felt when touching the pump area, the knocking is like actual knocks like a solenoid/relay?

[electrofix]

the noise you are hearing is the pump trying to start

you can prove this by removing the filter, selecting pump out and starting the machine with the filter removed, you will then see the impellor moving causing the noise

the fact you have water coming out of the anti syphon hose proves there is some water getting up the outlet hose and if it is why is no water getting into the bucket, mmm strange

running the pump with no water in does not prove a lot as it may not start just dither back and forth

you you can check voltage at the pump with the correct equipment

Dave

[kaibart]

Bosch will do the repair free if your 1 month out of warranty and that’s certain they offer a goodwill matrix depending how long your out of warranty if your over a month then you pay call out £106 and part are free up to a set amount of months

[Mikey T]

Thanks both.

Dave, apologies I meant that I had water coming out of the syphon part when the pipe was removed from the machine and being cleaned, not when actually in situ, whilst in situ I have nothing coming through the pipe.

I’m hoping to do further testing today and obviously I’ll post soonest, I’m hoping to find a pipe I can put in the pump outlet side so we can eliminate the outlet pipe completely.

Kaibart, that’s very interesting indeed. The lady I spoke with was only interested in either selling me an extended warranty or arranging an engineers visit at cost, she even quoted what the replacement pump cost and approximate completion time. I stressed multiple times my displeasure and pleaded my case – again including the fact that the warranty was being deducted whilst the unit was actually in transit, I have always bought Bosch as I have loads of equipment which worked without faults for 15+ years, I have also kitted this house out with loads of Bosch kit. Her reaction was “we can extend warranties on all of your Bosch equipment, would you like me to work out a price for you?”

I can try again but I don’t think that I’ll get very far if I’m honest.

Thanks again

[Mikey T]

The plot thickens….

Just tried a few checks this morning. I’m going to carry on with other electrical tests but I would like to post some results to see whether it sparks anything with you guys.

Tried a drain test without water and the filter removed – The impeller spins up straight away with no noise.
Paused the machine, added a few litres of water – Noise returned
After a couple of minutes the noise stopped and it drained correctly, the pressure looked fine/constant – it then completed the rest of the test without engaging the drainage pump.

Tried another drain test with a measured amount of water in the drum – Noise straight away, after a couple of minutes the noise stopped and it drained correctly – the same amount of water came out.

After scratching my head and having a brew I completed the above test again and it did the exact same thing I.E

Tried another test with a measured amount of water in the drum – Noise straight away, after a couple of minutes the noise stopped and it drained correctly – the same amount of water out.

I then repeated again and got the same results?

The period of time between pump noise and then draining seems pretty constant +/- 10 secs? I can time it if it would help. Given the consistency of time (noise to drain) could it be a control issue?

[electrofix]

well if its starting after 10 secs it should run a programme

it is an odd fault at this time now, you have 2 pumps showing similar fault problems

Am starting to wonder if the pump is getting a full supply from the board to enable it to run

Dave

[Mikey T]

Drain test – this shows the random nature of it but also the pressure out.
https://youtube.com/shorts/Pcgn7rmt-Kk?si=lVYAoOSfq2YHkYbZ

Not shown in the video but I have bypassed the main outlet pipe at the pump housing by using a different one from our old washing machine and the noise started straight away on the drain test exactly the same as with the original part – note, no build up of pressure anywhere in this pipe. I would therefore assume the main outlet pipe (from pump to drain) is not the issue?

Electric tests:
45V-44V with dial on drain program (pre program-start)
230V present when the program starts

A further drain test didn’t yield the same timings as mentioned earlier, but it does still drain fine once the noise stops and the motor actually kicks in?

[kaibart]

Sounds like you have spoken to d&g phone and ask to speak to customer liason they will sort it for you

[kaibart]

Plus from reading your first post you have the wrong part number for the pump the part number should have been 00146083

[Mikey T]

Thanks Kaibart.

You’re right regarding the number, the order code with Bosch is 00146083 (which is what I ordered) the part number of the actual pump is what I quoted on my original post – it’s actually printed on the motor itself “Bosch P/No: 8001090259”

Given the nature of the fault, the potential for expensive replacement parts (control board etc) and that I’ve exhausted my abilities (not to mention the wifes patience) I’ve had to bite the bullet and extend the warranty so it will be getting repaired by Bosch. I spoke to a differing agent today and they wouldn’t agree to repairing anything with free parts, pleading my specific warranty case again and even quoting “goodwill matrix” yielded nothing. The visit date is this coming Thursday 4th.

I really appreciate all of the help on here, it’s lovely that there is such a forum to help the everyman. Obviously as soon as it’s fixed and I learn what the fault is/faults are I will post so people can hopefully learn from these issues.

Massive thanks for your help!!

[Mikey T]

Update.

The engineer has been out today and the problem remains.

I’m guessing the engineers must have a certain amount of calls to do per day as he did the very minimum and left without doing any investigating whatsoever. He came, replaced the pump (which I thought would be the first thing he would do anyway) then when the problem persisted told me that there’s nothing more he could do and suggested we have an earth fault on our socket. (this at least eliminates the pump – what’s the chances of 3 being faulty in exactly the same way?)

He told me that once I fix the earth fault to the socket I could speak to Bosch and get them out again if the problem persists. In fairness he had a small point as there is a slight fault on the socket – it’s showing 3V on a Neutral to Earth test. To to my mind it was clearly an excuse to leave as he was either only intending to replace the pump and leave or didn’t know what else to do. I suggested we could use an extension cord to another socket but he wasn’t having any of it. He did not remove any of the pipes to check for blockages.

I could have pushed the matter further but again I got the impression that he didn’t really know what he was doing or couldn’t be bothered and I would prefer a different engineer. I’m going to fix the Neutral-Earth voltage issue (not that this was the issue IMO) and get them back out.

Again I will report back soonest.

More days of missis ear-ache 🙁

Regards

[kaibart]

Where abouts are you in the UK? As mentioning a managers name may help you here and I know someone working there too

[electrofix]

could have tested it on an extension from another socket

does sound like an escape plan and 3 volts between N and E could be a dodgy earth

have you tested other sockets to see if its normal in your house

Dave

[Author]

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