Question about Bosch Dishwashers

2 Answers

Solenoid Vater Valve or Aqua Stop Valve

If the dishwasher is left overnight not in uses, water seeps slowly back into the dishwasher.
With the door open and the 'on' button depressed, the dishwasher begins pumping away the water that's gathered. At this point the door is still open and no programme has been selected.
I am told the water inlet valve needs replaced but on my model, the only thing I can see is a aqua stop valve.
Spare parts suppliers quote Bosch part No. 167025 which is a Solenoid Vater Valve and Bosch part No. 263789 which is an Aqua Stop Valve

Bosch model SHV43A03GB/42

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  • brian_burns May 10, 2010

    Thank you for your reply but I'm still not sure which part I should buy is it the Solenoid Vater Valve or the Aqua Stop Valve?

  • brian_burns May 10, 2010

    Thank you for your reply. I accept your answer but can you suggest where I coudl fnd instructions for replacing the Aqua Stop Valve?

  • brian_burns May 11, 2010

    I found the second solution to be the easiest to understand and the advice on how to replace the part very helpful. I would recommend your service.

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2 Answers

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  • Master
  • 949 Answers

On your model the aqua stop valve is the root of what is causing the leak, the check valve inside the aqua stop is reducing the pressure too far and the seat on the water inlet is bypassing due to the aqua stop.

So to repair this order the second part you list No. 263789

Let me know if you need more clarification.

Posted on May 10, 2010

  • Philip May 10, 2010

    Hi,

    The part is located under the dishwasher in the lower pan. It is between the water inlet from the house supply and the water inlet to the tank on the dishwasher.

    The dishwasher will have to be removed from the installation and the water and electrical supply to the dishwasher turned off while make the change.

    With the dishwasher out lay it down carefully, you should be able to remove the lower pan and see the component. It is not not difficult but can take a bit of time.

    Once you are done, check very good for water leaks!

    Let me know if you have questions.




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  • Bosch Master
  • 12,061 Answers

Http://www.managemylife.com/mmh/Troubleshooting_Guides/Dishwasher.pdf
http://appliancejunk.com/ge/dishwasher/31-9137.pdf
http://appliancejunk.com/ge/dishwasher/31-3280.pdf
please find above some dishwasher DIY help sites, and service manuals, these manual should help you troubleshoot and repair your dishwasher. If water seeps in, it is the INLET solenoid that's leaking and probably needs replacing that or the seal has gone, wither way you may need to replace the entire thing. It is NOT the outlet valve, the only way water gets into the washer is from the water inlet valves, on the Hot & Cold taps.

Posted on May 10, 2010

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Posted on Jan 02, 2017

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If your Dishwasher is not Draining check the following

PISTON VALVE

On some dishwashers that have a filter (screen) along the back wall of the tub have a piston valve. The piston valve commonly causes dishwashers not to pump out. if your dishwasher does have a filter, remove it. Now remove the piston valve located in the center behind the filter. Now to check the piston valve, press up on the spring. Once done the piston should stop up the hole in the top of the valve. When a piston valve, is bad the piston dissolves to the point that it can no longer stop up the hole, in this case replace it.

DRAIN SOLENOID

Another common problem on some dishwashers that will cause it not to drain properly is the drain solenoid. To check this, first disconnect power from dishwasher then remove the bottom panel of dishwasher. Once off, you should see the drain solenoid attached to the main pump then reach under the dishwasher and push down on the solenoid. If it will not move down it is bad and needs replacing. If it will push, down most of the time it is good but not always so follow these steps as well. Reconnect power to dishwasher, now start the dishwasher in to a cycle. If you have a mechanical timer turn it slowly until the solenoid energizes. If you turn the timer all the way around and the solenoid never energizes replace the solenoid. If you have an electronic control, start the dishwasher and wait a few minutes then push start/reset then the drain solenoid should energizes, if not replace the solenoid. At times the timer will cause this part to go bad especially if its melted or frozen down. So you may have to replace the timer as well.

CHECK VALVE

If your dishwasher is not draining properly, the check valve may be your problem. The check valve will be on some dishwashers with both a separate drain pump or drain valve (note if you do not have both you will not have a check valve). The check valve will be located where the black hose connects to the drain pump. To access the check valve, you must first remove the water from the dishwasher. A Wet-Vac works well. After the water is out, disconnect power to dishwasher. Now remove the dishwasher from under the cabinet. Now remove the black hose (even though you removed the water you will still have water in the pump so be ready).Once off you should see the check valve. It's the little red rubber flap. If it is torn off, the flap may have gone down the drain but you still should see the red ring left behind, in this case replace the valve. Sometimes the check valve will swell up and hang in the pump, if so replace it.

DRAIN PUMP

If your dishwasher is not draining properly, the drain pump may be your problem. As stated before, not all dishwashers will have a drain pump. To check this, First check to see if it is getting power. You should have 120 volts when the dishwasher is put into a drain cycle. If you have power and the pump does not run remove the pump and check for obstructions if none found replace the pump.

DRAIN HOSE

If your dishwasher is not draining properly, the drain hose may be stopped up. To check, remove all the water from tub. A Wet-Vac works well for this. After the water is gone remove the drain hose (even though you removed the water you will still have water in the pump so be ready) from the house plumbing and the dishwasher. Check for obstructions and remove. If you just installed a new garbage disposal check that the metal knockout was removed. Check the air gap if this is not right your dishwasher will siphon water back into it.
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PISTON VALVE

On some dishwashers that have a filter (screen) along the back wall of the tub have a piston valve. The piston valve commonly causes dishwashers not to pump out. if your dishwasher does have a filter, remove it. Now remove the piston valve located in the center behind the filter. Now to check the piston valve, press up on the spring. Once done the piston should stop up the hole in the top of the valve. When a piston valve, is bad the piston dissolves to the point that it can no longer stop up the hole, in this case replace it.

DRAIN SOLENOID

Another common problem on some dishwashers that will cause it not to drain properly is the drain solenoid. To check this, first disconnect power from dishwasher then remove the bottom panel of dishwasher. Once off, you should see the drain solenoid attached to the main pump then reach under the dishwasher and push down on the solenoid. If it will not move down it is bad and needs replacing. If it will push, down most of the time it is good but not always so follow these steps as well. Reconnect power to dishwasher, now start the dishwasher in to a cycle. If you have a mechanical timer turn it slowly until the solenoid energizes. If you turn the timer all the way around and the solenoid never energizes replace the solenoid. If you have an electronic control, start the dishwasher and wait a few minutes then push start/reset then the drain solenoid should energizes, if not replace the solenoid. At times the timer will cause this part to go bad especially if its melted or frozen down. So you may have to replace timer as well.

CHECK VALVE

If your dishwasher is not draining properly, the check valve may be your problem. The check valve will be on some dishwashers with both a separate drain pump or drain valve(note if you do not have both you will not have a check valve). The check valve will be located where the black hose connects to the drain pump. To access the check valve, you must first remove the water from the dishwasher. A Wet-Vac works well. After the water is out, disconnect power to dishwasher. Now remove the dishwasher from under the cabinet. Now remove the black hose (even though you removed the water you will still have water in the pump so be ready).Once off you should see the check valve. It's the little red rubber flap. If it is torn off, the flap may have gone down the drain but you still should see the red ring left behind, in this case replace the valve. Sometimes the check valve will swell up and hang in the pump, if so replace it.

DRAIN PUMP

If your dishwasher is not draining properly, the drain pump may be your problem. As stated before, not all dishwashers will have a drain pump. To check this, First check to see if it is getting power. You should have 120 volts when the dishwasher is put into a drain cycle. If you have power and the pump does not run remove the pump and check for obstructions if none found replace the pump.

DRAIN HOSE

If your dishwasher is not draining properly, the drain hose may be stopped up. To check, remove all the water from tub. A Wet-Vac works well for this. After the water is gone remove the drain hose (even though you removed the water you will still have water in the pump so be ready) from the house plumbing and the dishwasher. Check for obstructions and remove. If you just installed a new garbage disposal check that the metal knockout was removed.. Check the air gap if this is not right your dishwasher will siphon water back into it.

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Let me know what you find.

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