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Machine is a Bosch S210 which has worked faultlessly since new in 1988 :>)
Type/serial numbers are 0730 103 556 FD6703 28592.
Problem first occurred last night – eventually, machine did take in water and completed cycle after much messing about switching water on and off, and restarting cycle by turning control knob.
Today, can’t get it to take in water at all, on any cycle. Pump out works OK. Sounds like it is trying to pump water around but everything stays bone dry. Seems to stall part way through cycle (detecting lack of water?).
Have taken RH side off but no real access to supply valve (or whatever controls water inlet) which appears to be at bottom rear. Did discover how flood protection works (!) and checked its microswitch – changeover works OK.
Questions:
– Is failed inlet switch/valve most likely cause of problem?
– Are replacements readily available? From where? Ref/type number? Cost?
– Which way gives best access to the area of the valve? Lay it on its side/front and approach from underside?TIA for any help/guidance you can give.
Regards
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Vince O’FarrellRe: Bosch S210 – water not being taken in – inlet valve fail
I take it that this is an SPS2100GB/– slimline dishwasher? The standard no fill fault is the tank on the rear being able to drain through the softener matrix (The orange gunge at the bottom) and into the machine. If the rear most vertical channels of the matrix are full of water, so is the tank. If they are empty – so is the tank. If the tubes are full, it would indicate a softener problem, if they are empty it would point to the valve.
The water inlet valve is p/no 057091 @ £12.46 plus Vat & P+P from http://www.bshappliancecare.co.uk
HTH
Regards,
Penguin45.Re: Bosch S210 – water not being taken in – inlet valve fail
Penguin45
Thanks for the response. This is a full size (60cm) dishwasher dating from the late 80s. The Bosch model number on the front is S210. Since my original post, I’ve found the bshappliancecare site and it has a parts list and exploded schematics for the machine (E Nr. 0730103556).
The parts list does not include the part number you quote so my machine sounds like it is different to the one you are describing.
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VinceRe: Bosch S210 – water not being taken in – inlet valve fail
The equivelent part number for this model is 051836 😀
Dave.
Re: Bosch S210 – water not being taken in – inlet valve fail
Aha, one of them……… Before splashing out on the valve, you need to check the “Fill Baffle to Sump Transfer Hose” – or in the trade “the roundy roundy hose”. When you have the power off, tip the machine back and you will see a clear hose in the the rear right quadrant of the machine, going round in several circles. You can now deduce why its the roundy roundy hose. This will almost certainly be clagged up and will need flushing out. You will be astonished how much comes out…….. Clean out the spigots where the hoses join on as well. When it gets blocked, it causes nuisance operating of the pressure shut off on the inlet valve.
The actual model number of the machine will be on a label on the cabinet door surround up at the top BTW.
Regards,
Penguin45.Re: Bosch S210 – water not being taken in – inlet valve fail
Penguin45
OK, I’ve had a good look at the roundy roundy hose. It has a little bit of brownish crud in it at the bottom of the loops but nowhere near enough apparently to block it. I can see clearly through nearly all of the hose with a torch.
However, I’ve now taken off the kick plate and LH side panel to watch exactly what happens during a rinse cycle. After the pump out, when I would expect to hear the machine filling with water, there is a buzzing noise which seems to be coming from the valve at the bottom of the salt container. After this has been happening for a couple of minutes (and obviously after disconnecting from the electricity supply!) the coil on this valve is quite hot. The DC resistance of the coil is about 5K so it looks as if it is still sound. If this valve is not working, could this be the cause of the no-fill problem?
Is it possible that the mechanical part of the valve is seized or jammed? Can the salt at the bottom of the container solidify and impede the valve action? I see that spare coils (02 2470) and complete valve assemblies (05 1834) are available at a reasonable cost so if this is likely to be the source of the problem, I’m prepared to replace the valve.
As you say in my other thread, this has been a reliable machine and it’s probably worth continuing to use it if it can be repaired at a reasonable cost.
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Vince O’FarrellRe: Bosch S210 – water not being taken in – inlet valve fail
Vince,
The noise you are hearing is likely the ‘water block’ activated on the water inlet valve. As penguin45 says, the water level system will need a thorough cleaning (a torch will not show all you need to see :lesson: ) so its essential to strip and clean the entire water level system (including the float chamber unit, the ‘T’ piece etc etc).
Once that is done and reassembled, carefully remove the clear plastic tube that connects to the inlet valve and blow any water build-up back into the pipework! Pop the pipe back on and Bobs your Uncle, start loading the dirty dishes again 😆
Call us in 10 or 15 years time should it go wrong again 🙄
Re: Bosch S210 – water not being taken in – inlet valve fail
I’ve disassembled all the pipework in the roundy roundy area including the float chamber unit and the T-piece next to it, rinsed them out even though they were already pretty clean, and reassembled.
Next I disconnected the clear yellow small bore tube from the main water inlet valve and blew through it – it’s not blocked and I can see the effect of the airflow at the other end of the tube on water in the float chamber unit. I assume that’s the tube you mean – the main valve has two other blue large bore tubes connected – one inlet from the mains and the other outlet going to the top of the plastic housing on the LH side above the salt container.
Problem still there however. The buzzing noise is very loud and I’m pretty certain it’s coming from the higher (LH) valve on the salt container. It sounds just like an armature that wants to move but can’t. I would be surprised if a blockage elsewhere would have that effect on that valve coil. What does that valve do?
Should I check any other pipes? Is it worth removing and inspecting the salt container valve?
Thanks for bearing with me so far – your suggestions plus the diagrams and parts list on the BSH web site are a great backup to my investigations.
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Vince O’FarrellRe: Bosch S210 – water not being taken in – inlet valve fail
Vince O’Farrell wrote: The buzzing noise is very loud and I’m pretty certain it’s coming from the higher (LH) valve on the salt container.
The valve you describe is the ‘soft water shut-off valve’ which normally is only energised during Pre-wash and the intermediate rinses. This valve is rather insignificant in the overall operation of the machine however, and can be ignored. Having cleaned the water level system as you appear to have done quite successfully the machine should function correctly. If that doesn’t happen, then the Inlet Valve is at fault IMO.
When you set your machine onto the start of any cycle the machine should drain for 60 seconds then fill as the main circulation pump operates. Specifically, please describe to me what happens in your case?
Re: Bosch S210 – water not being taken in – inlet valve fail
Thanks for response Martin.
This is what happens at start of prog 1 (rinse):
m:ss
0:00 – press start button. Noise (pump?) starts, sound of water draining into waste. (I had put 4 litres of water into machine before starting the test.)
0:10 – new noise starts.
0:50 – programmer clicks then further noise which sounds like arm rotation. Buzzing from salt container valve starts but masked by other noises.
1:50 – arm rotation noise stops. Buzzing now clearly audible. Machine continues to make some noise.
2:50 – machine stops making any noise except for buzzing from valve. Programmer seems to have stopped rotating the control knob.At this point, the machine seems to be stuck in this state. If I open the door, power is interrupted so buzzing stops, I can see that there is some foaming from the outlets on lower arm. Close door. Buzzing restarts. Programme only continues if control knob manually turned on a click.
Vince
Re: Bosch S210 – water not being taken in – inlet valve fail
Vince,
It is the water inlet valve (and NOT the salt valve you referred to) then that’s making the buzzing noises for sure! Clearly the electromagnetic coil on it has given up the ghost and sadly a new one (Part No: 051836 – cost about £50 ish?) the only answer to your problem.
We can get one for you, simply email spares@ukwhitegoods.co.uk for advice and availability.
Re: Bosch S210 – water not being taken in – inlet valve fail
Just a thought…after cleaning /depressurising the small bore yellow hose on the antiflood of the valve, did you disconnect the inlet supply hose (blue hose with knurled plastic nut)?
The inlet vavle will not reset if it still has mains water pressure to it. The cure…disconnect the hose from the valve (water supply turned off) and turn the appliance on. Wait for the buzzing…this will allow a few drops of water back out of the valve…switch off (unplug) then reconnect the water supply.
Switch back on and Bob’s your uncle! 😉
Re: Bosch S210 – water not being taken in – inlet valve fail
Clive
No, I haven’t disconnected any of the hose from the main inlet valve. That was going to be my next step because there is a (very small) possibility I guess that the isolating tap on the cold supply is turning but not actuating… Very unlikely I know but should really be checked.
Before splashing out more than 50 quid, I also thought I would take the valve off completely and check it to see if I could spot anything untoward. It’s going to have to come off anyway if it is to be replaced.
Thanks for the tip.
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Vince O’FarrellRe: Bosch S210 – water not being taken in – inlet valve fail
Good idea…but….the outlet side hose on the valve(the one held on by a wire clip) will be a pig to get off and risks damaging the valve in doing so.
I wouldn’t recommend trying to dismantle the valve itself, these things are often never the same again if you do, particularly at it’s advanced age.
I suspect if you try as i suggested in the previous post to let the pressure out of the valve then all will be well.
Let us know how you get on?
Re: Bosch S210 – water not being taken in – inlet valve fail
Well, I’ve just been looking at the main inlet valve. Before taking any hoses off, I decided to check the coil resistance so having slipped off the spade connectors, I applied the meter and……..zilch – open circuit – the coil is a definite goner. So that seems to settle it, it is the main inlet valve. Don’t know why I didn’t check it earlier – distracted by the buzzing from elsewhere.
The BSH sites lists two parts:
022476 Coil £51.94
051836 Valve-magnet £51.94Are they the same part? Is the coil part of the larger assembly? I presume I should replace the larger assembly if I’m replacing anything. What do you recommend? 051836 was the part suggested by Martin but I’m confused by seeing two different parts, one apparently a subpart of the other, yet both the same price! I’ve emailed spares@ukwhitegoods.co.uk for a quote for 051836.
I hope I’m nearing the end of this problem – thanks again for all the help.
Vince O’Farrell
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