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Hi, I have a problem with a Bosch Logixx 7/4 washer drier. It is intermittently showing a flashing tap icon accompanied by four short beeps. This is a fairly old machine which has been happily working in its current location for some years now.
Based on the tap icon I have interpreted this as a problem with the water supply. The water pressure from the outlet seems fine. I have detached the hose and cleaned the filter at the supply end, and I have pulled out and cleaned the small filter at the machine end. I have run water through the hose to clear any blockage. Finally I have replaced the hose entirely. No joy. I have also reset the device (I think successfully) using the standard procedure for Bosch machines which I found on this website.
The problem is fairly intermittent and the behaviour is different depending on the programme. For example if I run a rinse programme, I see water flowing into the machine fine. It gets two minutes into the programme and then starts flashing and beeping. Sometimes the programme stops progressing at this point, other times it gets past it and goes all the way to a successful conclusion.
On the other hand, if I run an actual wash programme, the drum starts spinning but no water is flowing, and the tap flashing and beeping starts a few seconds later.
At this point I’m stuck. I thought I was getting somewhere with cleaning out the hose: the rinse programme initially wasn’t working at all but after my messing around it now completes consistently (albeit with a complaint at the two minute mark) so I thought when I replaced the hose I’d be sorted. Seems I was barking up the wrong tree. If anyone has any ideas, I’d be very grateful for your advice!
we would need an Enr number and an Fd number to know which machine you have.
Both are normally on a label inside the doorDave
if its filling ok it may be a sensor issue
there will be a thin plastic tube going from the bottom hose to a switch. where the tube connects at the bottom there is a chamber to catch air this can sometimes get full of residue that stops the air getting to the switch
dont blow into the switch as you can destroy some typesDave
Right, got it: thanks very much for the pointer, and Dave for the original suggestion.
Unfortunately this does not seem to be the problem: no sign of any blockage or residue in the chamber at the bottom of this tube. So I’m still stuck. If you have any more ideas, they would be gratefully received!
The one other thing I’ve done today is actually measure the water pressure. I was confident it was fine, but worth checking anyway. I estimate I’m getting about 9 litres / min, which I think is more than good enough from what I’ve read.
ok we have 2 possibilities that i can think of and both boil down to the valve
the valve consists of 3 seperate valves used at various times of the programme to fill the machine. as the valves age its possible for the internal rubber diaphram to split and slow the water flow down or the coil to blow which means no water flows
you mentioned
“”On the other hand, if I run an actual wash programme, the drum starts spinning but no water is flowing, and the tap flashing and beeping starts a few seconds later.””
this sounds like a valve is not activating
test all valve coils with a multi meter. expect to get around 3K to 5K ohms
Dave
Right, I think we’re on to something now. Using this image as a reference:
https://www.dropbox.com/s/i2x0ahid7s75gco/20200519_233751.jpg?dl=0
I measure 4.05k ohms on the red contacts, 3.85k ohms on the blue, and on the green I’m getting 1 on the multimeter all the way up to its 2M ohm limit.
So it looks like the coil has blown. I guess I need to replace this part. I think I’ve found the part I need on the Bosch website (https://www.bosch-home.co.uk/store/00618406#/Tabs=section-fitsappliance/), I haven’t identified the equivalent part in the shop on this website yet but I’m looking!
bad news it by the looks of it its a gen part only
there are 2 ways to play this
way one is to fork out £97 to bosch for a new valve
way 2 is to look on ebay for a similar constructed valve
gently prise off the white connector from both units. Swop a good coil and resecure the connector. if the connector is the same and operates the same coils you may be able to swop as a pair
cant promise it will fit but its highly likely and one heck of a lot cheaper. you also end up with a spare coil as you only need one
Dave
I’ve managed to extract the coil from the valve without difficulty so I’ve gone the eBay route. Hopefully it will get here quickly and be a fit, or the kids will have to start wearing their underwear inside out!
Thanks again for all the advice, I really appreciate it.
OK, I’ve received the part I ordered, and the result is… partial fix! The most frustrating of all fixes.
As discussed above, I ordered a second-hand but incompatible Bosch part from eBay, extracted a coil from it (which I checked and is working) and replaced the bad coil in my valve assembly. I put the machine back together, ran the Superquick 15′ cycle and it worked fine. Job done, machine back in place, celebratory cup of tea.
The problem came as soon as we started actually using it. Any programme apart from Superquick runs into problems at some point in the cycle.
- The Superquick 15′ programme works 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} reliably without complaint, with and without a load.
- Any other programme we try (Rinse, Powerwash 60′, Cottons, Fluff Clean…) will complain at some point or other with the beeping and the flashing tap indicator.
- The Rinse and Fluff Clean programme behave in a reliable and consistent manner. About two minutes in they start complaining. The Rinse programme takes some water in initially, then starts complaining, but after a few minutes seems to make it past that point and then completes the programme successfully.
- The Powerwash 60′ we have run twice. In both cases it made it to the end of the programme eventually. The first time it made it 45 minutes into the 60 minute programme. It then complained with the flashing tap for about five minutes, then seemed to get past it and complete the programme successfully. The second time we ran it I was out of the room initially, but my wife reported it was complaining early on in the programme and she had to stop and restart it. It then made it all the way through until about 7 minutes remaining, then complained for five minutes, then made it past and completed the programme.
- The fabric softener compartment in the drawer seems to be filling with water during some (all?) programmes, which my wife says she has not seen happen before.
So now I’m stumped again. On the upside, we are able to wash clothes again, either using the Superquick programme or via nursing it through one of the others. Obviously something isn’t right though. What’s strange is that the machine seems quite capable of doing all the functionality it needs to do: filling, draining, spinning, heating, etc. except it stops and complains along the way.
- I’ve checked the coils in the valve again and they are all still good. Given that I didn’t go the expensive route of replacing the whole valve, I suppose it could still be the problem? Perhaps the rubber diaphragm has perished as well? It’s an expensive punt at £97, unless the water in the drawer is a decisive clue!
- Given that all the mechanical functionality does seem to be working, perhaps this is now a control board problem?
- I’m also vaguely wondering whether it might be a draining issue. My only real reason for this is in both cases when the Powerwash cycle got past it’s late pause, the next thing it did was drain the machine, so perhaps this is the step it’s having problems with. But on the other hand, as far as I can tell the flashing tap is always used to indicate a filling rather than a draining issue, and the machine is routinely draining at other times in the cycle without complaint.
As always, any thoughts much appreciated!
this is anothe long shot
some of the valves are sealed others are screwed in
take the valve you have bought and with the coil removed grab the valve stem gently but firmly with a pair of pliers and see if it will unscrew. if yes you can extract the diaphram and hopefully yours is the same and swop it.
before you do check your valve and see which valve is energised when the problem happens so you know which one to swopDave
Just to close this thread off, I tried doing what you suggested but i found the valve stem didn’t budge – I wasn’t going to remove it without damaging it. I therefore bit the bullet and replaced the whole valve assembly which has fixed the problem. Once again, thanks for all the advice.
this valve via the picture has a flow sensor in the valve as well as the solenoid valves. It is probably that that is the issue. So looks like a new valve to me. Words of warning: I think from memory that the valve is one of those Chinese made Siemens/Bosch valves which cost peanuts to make ( Bosch are ripping the public off in my opinion but what do you do! ) my point is when you fit the new valve distrust it as I had one replacement fail and not shut off on tumble drying and it caused a flood. So watch the valve and if you do go away for godsake turn off the machine`s tap.
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