bosch smv50c00gb ‘water supply light’

[matt-miles]

I’ve got a bosch smv50c00gb integrated dishwasher and I’ve just come home to find the water supply light illuminated, my dishes are half finished and the cleaning tablet is still in the recess (albeit looking a little sorry for itself).

I’ve tried to clean everything (filter, nozzles etc.) but to no avail.

When I set the machine to perform a rinse as a test – it pumps for a few seconds as normal, pulls water for a second… Pumps some more (I think)… pulls water for about 5-10 seconds, pumps some more (maybe 20 seconds or so) then clicks and stops. The ‘End’ light is now flashing and sometimes the water supply light is on (but not always)

After reading up on here, I’ve taken the machine out, and checked for the usual water in the base – but its bone dry – never been wet.

A couple of things that are troubling me…

First – the ‘flood-stop’ inlet hose has been pushed up against the machine when its in situ, and some sort of heat (not sure whether its the body of the machine itself or the wire within the outer hose) has discoloured it as well as moulded it to the bitumen-type stuff on the back of the machine. Is this to be expected?

Second – the inlet chamber / fill matrix / inlet manifold looks blocked solid in one area. When I’ve set the machine to perform a rinse, water doesn’t go past this point – and I’m wondering if this is causing the problem?

Here’s a couple of pics to show what I mean.

Here’s the discolouration on the inlet pipe

Here’s where the pipe had moulded itself to the back of the machine

Here’s the inlet chamber / Fill matrix / manifold

And a close up of the really blocked bit…

Any ideas whats going on here? And what can I do to fix it? It looks as though even if I can get the manifold/matrix thingy off all the fittings – I’m not going to be able to clean it out properly… Can these be replaced?

[Martin]

Re: bosch smv50c00gb ‘water supply light’

Try replacing the reed switch (part no: 00611317) as I think that may be at fault.

[matt-miles]

Re: bosch smv50c00gb ‘water supply light’

Hi Martin,

Thanks for the quick reply…

I took your advice and ordered and fitted the reed switch to no avail.

The cycle is still as before: 1bout 1 minute of pumping, then a short intake of water, then a longer, 20 seconds intake of water, more pumping, then a click…

Unfortunately, there’s no screen on this model, (as you probably know) so I’m showing no error codes – just the ‘End’ light is illuminated upon opening the door.

Any further ideas on what to replace next? Or am I best to call in an engineer?

Kind regards once again!

Matt

[matt-miles]

Re: bosch smv50c00gb ‘water supply light’

Further to my last post…

I thought I’d try removing the electrical connection to the reed switch as I ran a rinse cycle to see if that made any difference…

the cycle changed to: Pump for about a minute as usual, then a continuous intake of water, and the machine started beeping… So I reconnected the reed switch connection and the beeping and water intake stopped. Then resumed as before…ie. clicked off before completing a cycle…

Any ideas?

Matt

[Martin]

Re: bosch smv50c00gb ‘water supply light’

The water impeller inside the filling matrix might well be the problem. It’s all part of the matrix so the whole thing would need replacing.

[matt-miles]

Re: bosch smv50c00gb ‘water supply light’

Thanks again for the quick response Martin!

Couple more questions…

Is replacing the matrix a DIY job?
Is it likely to be anything else? – Control unit for example?
I only ask as if I’m going to be replacing more and more parts, it will be more cost effective for me to get an engineer in to do more tests…

Thanks again for all your help!

Matt

[Martin]

Re: bosch smv50c00gb ‘water supply light’

Matrix is a simple fix. Control unit very costly in comparison.

[matt-miles]

Re: bosch smv50c00gb ‘water supply light’

Thought I’d update the thread…

I’ve just called an engineer out (I figured the £50 call out fee would be worth it for the confidence in knowing what exactly is going on with the machine)

So, the engineer managed to track down the problem to the heater element. No continuity across the terminals… This is what’s causing the ‘click’ as the machine is about to start its cycle…

Apparently, the heater element is an integral part of the pump, which means the whole thing needs to be replaced. The part alone is in the region of £150 +VAT +labour to fit, so it looks like we might be better off replacing the whole machine.

Will look into the option of replacing the pump myself, but with a 1 year old in the house, I neither have the time to pull it all apart, nor can I face doing the dishes the old fashioned way until I do finally get the time to do it!

Thanks for all your help on this Martin!

Much appreciated!

M

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