Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean errors

[MikeGB]

Hi ,

We have a two year old, Bosch WKD28540 EU/03 washer/dryer, which is no longer working properly.

1. On a wash cycle (eg ‘Super Quick’), the machine fills with water and starts the washing cycle OK. The timer counts down from 16 to 15 minutes; goes back to 16 and then continues down to 10 before the machine stops and an ‘E 05’ (low water) error message is displayed

2. The machine currently shows that it requires a ‘Fluff clean’.

Sometimes, when we start the ‘Fluff clean’ cycle the ‘Fluff clean’ light stays on (the manual indicates that it should go out); the tub fills with water and the routine runs to about 12 minutes, when the ‘Main Wash’ light comes on; the timer jumps to 1 minute; ‘Unload’ is displayed (despite nothing being in the drum) and the cycle stops.

At other times, the routine has run to about 10 minutes and then the ‘E 05’ message has been displayed.

I have checked the water supply. There were some particles in the inlet water filter but this is now clean and the inlet water is flowing freely.

Any advice or suggestions as to what might be wrong and possible solutions would be appreciated.

[electrofix]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

how is the outlet hose connected ?

is the water siphoning off slowly ?

Dave

[MikeGB]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

Hi Dave,

Thank you for your quick reply. The outlet hose is connected to a multi-way fitting above the U trap to the kitchen sink. There doesn’t appear to be any problem with the rate of water being pumped out. I checked the drain pump and it was clean.

Very little seems to happen after the first intake of water in either the Super Quick wash cycle or Fluff Cleaning mode except for a slow turning of the drum after a minute or two.

Mike

[Martin]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

Aquastop fill hose problems by the description you gave.

[MikeGB]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

Thank you, Martin. Can you please tell me if these are serviceable or whether I just need to get a replacement?

Regards

Mike

[Martin]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

MikeGB wrote:Can you please tell me if these are serviceable or whether I just need to get a replacement?

Well the replacement (part number 00679532) is costly at around £95. 😯

Serviceable it isn’t sadly.

The only reason I suspect the aquastop at fault is, that from your statement, it sounds like your machines logic is ‘timing out’ on the filling. Its ‘logic’ allows for a minute or two to fill and if it goes beyond that the error code E:05 shows. So may I ask if the water supply is mains fed or gravity fed, low or high pressure?

[MikeGB]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

Thanks again Martin. I think that this sounds highly likely. I presume that the water supply is gravity fed. The machine is actually in a 6th floor ski apartment in France. The flow rate from the cold water tap is approx 5 litres/minute. I get the impression that the installation was done by a cowboy, as the the supply feed uses a self cutting saddle valve and there is a piece of standard flexible hosing between the valve and the Aquastop. I’m tempted to try bi-passing the Aquastop to see what happens. What do you think?

[electrofix]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

if machine has been working there for a while then it may be :-

those self cutting valves have a habit of corroding and blocking. turn off the water so you can unscrew it and inspect the metal cutting tail. it may well be rusted almost closed. clear it and put it back. done lots of them

Dave

[MikeGB]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

Hi Dave, Thanks again for your further input. The machine has been working fine for a couple of years. I did check that there was water coming out of the valve but I’ll check the flow rate and have a look at the cutting tail.

Regards

Mike

[MikeGB]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

Hi Dave & Martin,
I’m pleased to report that after switching the water input supply pipe to a second self cutting valve (which was being used for the dishwasher) that I have got the machine to complete both ‘quick wash’ and ‘rinse and spin’ cycles – although in both cases the timer jumped back a couple of minutes during the routines. The ‘fluff clean’ cycle completed on the second attempt (the first stopped again after 10 minutes with an E5 error), however the ‘fluff clean required’ lamp is still flashing. I will try stripping down and cleaning the self cutting valve to see if I can increase the input flow rate, in the hope that this might get the routine to work properly. Otherwise, I should be pleased to hear if you have any further comments or suggestions. Thanks again for your help.

Kind regards

Mike

[electrofix]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

the steel tail of the tap is only for initially cutting the hole. its normally corroded so much you can get it out easily ( not needed after hole is made does not affect water seal). Also poke the hole in the pipe to make sure its clear.

then screw tap back in
warning do not remove the body clamped around pipe only the tap

Dave

[MikeGB]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

Hi Dave,
Thank you for your warning. Very timely! I have now cleaned both saddle valves, which were very corroded. The water input flow rate now sounds higher but I’m still getting an E 5 error on the Fluff Clean cycle. Can you please tell me what triggers the ‘Fluff Clean required’ and whether there are any other filters that one can manually clean?
Kind regards
Mike

[Martin]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

Mike the reason most likely is that it still doesn’t fill fast enough due to the low flow rate/water pressure. ‘Fluff Clean’ cycle takes in more water than other cycles so it’s timing out I would imagine hence the reoccurring E05 error. 🙁

[MikeGB]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

Thanks Martin for the explanation. I’m wondering if, for some reason, the water pressure in the block has dropped. The fire hoses in the block are showing as being pressurised at 4 bar (I presume that they run at the same pressure as the domestic cold water system). I’ve rechecked the flow rate and am getting 6 litres/min. I see that Bosch specify a minimum flow rate of 8 litres/min, so think that I’m a bit stuck.
Regards
Mike

[Martin]

Re: Bosch WKD28540 EU ‘E 05’ Wash & ‘Unload’ Fluff Clean err

I don’t suppose the water supply is an indirect (gravity fed) system using a header tank is it? I suspect it more likely connected direct to the incoming mains, in which case the pressure will only rise when it is ‘off peak’ (ie mid morning, mid afternoon or after 11pm).

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