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Help please with a Bosch SMV40C30GB/48, serial number 267060286189026270, about two years old.
The blimmin’ thing is stuck, maybe mid cycle? The water light flashes continuously and the pump sounds like it is spinning for a short period then stopping. If left, it sometimes starts again and sometimes just sits there brooding.
I’ve tried all the usual stuff – it has water, the outlet pipe is clear, I’ve cleaned everything multiple times including undoing the clip over the pump impeller and ensuring it is absolutely free. It won’t reset, either with the standard hold down of the button or with any combination of reset + on/off + disconnect then re-connect of supply that I could find anywhere on the internet.
Any ideas on how I can get it back to normal?
Many thanks.
Have you checked the water feed circuit in this order:
1. Turn off water feed supply (usually under sink or nearby wherever the plumbing is.
2. Disconnect water feed pipe at the dishwasher and place end of pipe in a bucket.
3. Slowly turn on water supply. Is water coming out of the pipe freely and at pressure.?
if not fixed…
4. Remove dishwasher side panels to access the water inlet valve – where the pipe was removed above – and remove the valve. Inspect for blocked filter.
if not fixed…
5. Using a 12v power supply or battery, attach patch leads to the inlet filter solenoid and check it clicks and moves when power supplied.
if not fixed…
6. Refit inlet valve, and reconnect water feed pipe.
7. Remove water inlet pipe to wash motor – the wash motor will be the big motor. Put end of pipe in a tub/tray
8. Test using a wash cycle. Is water coming out of the pipe? Also, typically there will be a fill reservoir in-between the motor and inlet valve; it is usually plastic , quite long, and located at one side of the dishwasher. You will see it fill up when powered on. Is it filling ?
if not fixed…
9. Turn off wash cycle.
10. Remove wash motor cover. Check impeller fans for blockage.
if not fixed…
11. Refit cover to motor and refit inlet pipe to motor.
if not fixed..
12. Might be a main float and filter unit problem. The big plastic bucket thing with cylinders. These are made to all sorts of specs and needs to be removed, opened and cleaned – often needing the floats inside to be cleaned – and retested to spec.
if not fixed
13. It’s not a water feed issue – or unlikely to be , so , come back with the REAL problem or..BUY A NEW UNIT
Yes, lots of work, but welcome to diagnosis. Except 12, none of this is difficult and can be done by any simple handyman/DIYer. No special tools needed but you may need a good set of wide circlip pliers – or maybe use a radiator valve wrench – to remove some of the heavy duty pipe clips. Total time to do ALL of the above would be around 45minutes from start to end .
Thanks for that. I was hoping to get away without stripping it down, but I’ll put my Saturday morning to one side and report back on the results.
Problem Solved!!!!!
It’s a bit unconventional but here’s how I did it. I procrastinated for a while (no, that’s not a euphamism) and did any other job that I could rather than sort things out. Five and a half weeks it took, according to her who was washing the pots on the sink in the meantime.
Under mounting domestic pressure I then waved the spanners at the dishwasher and threatened to pull it out for stripping down. Just out of curiosity I then turned the power back on and lo & behold…. it worked okay. Undoubtedly, waving the spanners had an important restorative effect where everything else I had tried had failed miserably.
I’m hoping that after a prolonged period without power it forgot it was stuck in a doom loop and started again from square one. Or maybe I just got lucky. Chances are it will happen again, so we’ll see what happens next time.
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