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I am posting this here in the hope that someone may have come across this previously and be able to shed light on this issue that seems to be baffling everyone.
The fault is pretty basic, I get up in a morning and intermittently find my Bosch WAE28377GB/81 washing machine full of brown coloured stagnant water.
So far the reason for this has baffled both the surveyors from the Housing Association that own the block I live in, the drainage specialists and the Bosch Engineer that came out yesterday and tested the machine.
What I do know is this:
1. Its not the washing machine, its been run less than 12 hours before its happened (at least twice!) and when I have taken out the washing the drum has been clean and empty.
2. Both the drainage hoses for the washing machine and dishwasher have been checked by both the Drain Guy and the Bosch Engineer they are clear of obstructions and drain perfectly well.
3. Its not an issue with accumulated garbage in the washing machine or dishwasher I am extremely anal about kitchen appliances and run descalers / cleaners through on the 1st of every month because the water round here is about the hardest in the country.
4. The drainage links to the washing machine and dishwasher have been tested and are fine.
Does anyone have any clue or has seen something like this before because its baffling everyone and driving me nuts, its obvious something isnt right but nobody seems to know what.
TIA Stuart.
Re: Bosch Washing Machine Baffling Fault
There are only two ways water can get into the drum when the machine is not in use. Either the drain outlet hose or the water inlet system.
Have you tried turning the water inlet tap off overnight?
If you do this for a few nights and no water enters the drum then the fill valve is the likely cause.
Re: Bosch Washing Machine Baffling Fault
was writing this post at the same time as iadom but same result
well there is only 2 ways water can enter the machineinlet hose normally valve failure but would be clean water
drain hose got to be this cannot be anything else
Dave
Re: Bosch Washing Machine Baffling Fault
Drain hose sited incorrectly could be a problem but as the outlet pipe on most Bosch machines comes out at the top of the machine at the back it is not as common, unless the sink is well above the level of the machine.
Could be mains water especially in older property or when iron deposits are found in the water.
Re: Bosch Washing Machine Baffling Fault
” stagnant” is that with a smell of dirty water or no smell with just a colour change meaning stagnant water looking?
Since you live in a communal block. 1) ask neighbours if anyone uses their own appliances during the night. 2) how is the machine`s outlet drain pipe plumbed out? Is it to an under the sink connecter nozzel or is it down a stand pipe and only down about 4″. If the pipe is down a stand pipe and only 4″ you can eliminate any back flow because it would flood the kitchen (?) first which you do not mention so presume that doesn`t happen. If plumbed out to an under the sink nozzle you still have that as a possibility of a back feed via someone else above you ( if that is the case? ) or even next to you or even below you is using their machine = that the block`s shared usually external standpipe is part blocked up.What is much more likely is: either copper staining, or as already mentioned, iron deposits.Point to look for is at the washing machine`s end of the INLET hose there is a valve filter if this is semi blocked up with brown coloured flakey deposits you have rust in the mains water pipe which would give you a brown stagnant LOOKING but not usually smelling watery deposit in the drum. Is the door seal discoloured or does it look normal grey self.
I had this issue 27 years ago in a block of flats and it created a bloody big row with lots of physical yelling from both sides ( the machine was an Ariston ) and Indesit being blamed for something they had no control over…..however! In the end this is what was done: that machine was plumbed out in to an under sink nozzle which, it was agreed, that this nozzle should be water tight blanked off and the machine not to be used. Both the inlet pipes were left switched on. The problem continued over a week! So it wasn`t anything to do with the outlet hose or back feeding. What it was in this case was: there were no signs of bits of flakey brown deposits in the inlet valves filter BUT there was a fair amount of large pieces of rust deposits at the bottom of the inlet hoses at their lowest point. Obviously the specific gravity of iron is heavier than water ( taken as 1 ) and what was happening was every time the machine filled the rust deposits were pushed up to the valve and when the valve shut off because the machine was now not in use the rusty bits dropped through the water back to their lowest point and sat there rusting more! Therefore the machine filled up BECAUSE the valve, cold one, had failed allowing the machine to fill up very slowly / seep with tainted water.
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