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Bosch sgi4005au/20 water overflow - Bosch Dishwashers

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: BOSCH SMS4472GB/20 DISHWASHER water leaking

Remove the side and top panels of the machine.

On the left hand side you will see a clear plastic panel full of tubes and small tanks. This is the metering tank. At the bottom left of this unit, is a black pipe held on with a clip. There will almost definately be a blockage between this point and the sump. You can either buy and fit a new pipe or do what I did with mine, which was to remove it and clean it with hot water and a bottle brush. Seems to work like new again now.

You'll have to get the machine onto it's right side to remove the lower end of the black pipe from the sump. I drained as much excess water as possible out of the machine by sitting it on bricks, tilting it to the left and catching the water in a dish as it came out of the float hole. Some will also come out of the funny plastic tube which runs across the top of the machine - I carefully removed this first and caught this water in a pan.

Drain the waste pipe and disconnect the water supply.

Replace the right side casing on to protect the feed to the upper spray unit and put the machine on it's right hand side. Once the machine is on its right hand side, fin the water inlet valve and carefully remove its bracket from the chasis of the machine. You will need cross head and a torx screwdrivers - one for each screw. Once this is loosened, push some of the water supply pipe into the machine so you can move the bracket to the right a little to gaine access to the waste pipe. Remove this by removing the two gold coloured screws. This should now give you easy access to the sump end of the black pipe which lead from the metering tank. Remove this and clean it out. Pop all the parts back, stand you machine upright. Reconnect the watre supply and the waste and give it a rinse cycle to test - number 1 on the dial.

Hope this helps. My apologies if any of the take apart is not completely accurate - I don't want to turn my machine over again to check!

Mark

Posted on Apr 12, 2010

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Welcome to FixYa.

Based on your description, "when done water keeps coming in and eventually overflows any help would be great"... the issue is likely with the inlet/water valve being stuck "open".

To remedy this you will need to replace the valve, not surprising for Bosch unfortunately.

i.e.

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As long as your model number is indeed correct, this info below will be accurate.

I say not surprising because this part has been an issue for the B/S/H/ built machines in the past and as a result the original part number 189553 now substitutes to 425458. It usually retails for about $20 - $30USD at places such as "searspartsdirect.com" "repairclinic.com" to name a couple.

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i.e.

7d9ad1d.jpg

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3) the feed tube to the machine at the back of the valve and swap it with the new one.

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and

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Once the new one is in you should be good to go.

Let me know if you need any further assistance, otherwise good luck.

Thanks for visiting FixYa.

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