[TimW]

Re: Siemens Slimline SF24200GB/01 intermittent rinse fill

I think I might have cured it 😀

When I had the side off, I took the air pressure switch assembly out and blew into it to check it worked. I noticed that there must only be a very small hole into the diaphragm chamber, presumably to slow down any air flow through it and ‘damp out’ any water level fluctuations. I blew and sucked a few times and noticed that it only needed a very slight pressure change but it did take a few seconds before enough air had moved to trigger the microswitch.

I am wondering whether I might have cleared a small blockage in the air pressure switch, because the machine has worked perfectly ever since 😀 It has only been 3 washes since but they have been absolutely perfect.

Thank you both very much for your contributions, without which I would have wasted a lot of time and still might not have fixed it.

[TimW]

Re: Siemens Slimline SF24200GB/01 intermittent rinse fill

Thanks for the advice. 😀
I tried this last night and found that this hose had a tiny amount of sediment in it – no higher than the corrugations. I can see how this could become blocked and would prevent the unit from filling though.

Whilst I had the side off I checked the operation of the air pressure switch and it seemed to click on and off with the water more or less level with the top of the sump.
After being partially dismantled and reassembled, the machine worked perfectly this time. I cannot believe that it will continue this way 😕 but will add to this post if it does!

Do valves ever need replacing because they sometimes stick? or do they only ever need replacing when the coil burns out or they won’t shut off fully?
If it is not the valve, is it possible that the programmer is at fault?

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