Question about Bosch 24 in. SHU43 Built-in Dishwasher

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No fill - drain pump running - I assume stuck float switch

Where do I find the (probably stuck) float switch on a bosch dishwasher SHC43C02 FROM 2004?

Does the machine has to be removed from underneath the countertop to access the switch?

Thanks a bunch for your help!

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Remove the bottom plate of the dishwasher and the bottom pan is revealed. reason the drain pump is running will be that this pan has water in it ie you have a leak. mop out the water and dishwasher will work - switch off mains when you do this

Posted on Sep 10, 2008

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No water is coming in the dishwasher. I can hear the water running, but the water is not coming into the dishwasher


If you can hear the water running - but it's not filling, you most likely have a drain problem, which is being stuck open. Usually the motor kicks in and either pumps the water through the wash arms (during wash cycle) or through the drain (during drain cycle) the switch that/or flap could be stuck on the drain and it is pumping it out the drain all the time instead of the wash arms.

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Bosch Dishwasher won't fill with water


Certainly *sounds* like the float is stuck in the over filled position
or possible a bad float switch, if the float is stuck in the up or full position, the d/w will not fill with water and the drain motor will often run all the time

Jan 23, 2008 | Bosch 24 in. SHU43 Built-in Dishwasher

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Will not fill. Drain pump runs all the time.


Sounds like flood switch has been activated. They have a float in the base of machine, which will activate drain pump if a leak has occurred. Unplug from power- remove right hand side panel, check to see if any water in base. If so, leak has occurred. Clear water from base and test run to locate leak

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Dishwasher: BOSCH SHE43 - pump keeps draining


Your dishwasher is stuck in flood mode. Bosch dishwashers are built with flood switches located in the bottom base pan of the dishwasher. The flood switch is connected to a rod that activates a small interlock switch. When water enters the base pan on a Bosch dishwasher, a Styrofoam puck lifts the rod, activating the flood switch.

When the flood switch is activated, the dishwasher will go into a no-fill, only-drain mode. The drain motor may also run with the door open to the unit. This is definitely a sign there is water in the base pan. This can be caused by the drain being clogged. There are two ways to fix:

1. You can uninstall the dishwasher and tip it forward to about a 45 degree angle to drain the water out of the base pan. (This is probably why Ian Bint's solution fixed the problem.) Be sure to put a towel under the dishwasher first so that the water is soaked up in the towel instead of going all over the floor. Once you've drained all the water out of the base pan, reinstall the dishwasher and begin a cycle. If it fills and runs, you are good to go.

2. You can also unplug the unit, then remove the kick panel at the bottom in the front. (It's attached with two screws.) Then get some old washcloths or small towels and reach into the base pan below the dishwasher to soak up the water. The pan is directly behind the plastic base panel rim. Once the pan is empty and dry, your dishwasher will no longer be in "flood mode" and will run properly.

If the base pan keeps refilling with water and the no-fill problem returns, there is definitely another issue, such as a clogged drain. At this point, you need to decide whether to invest in an expert evaluation by a certified Bosch repairman and make the necessary repairs, or buy a new dishwasher.

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1 Answer

Not filling


check the base of the dishwasher for water. remove the toe kick at the bottem and soak up the water down there. its probably activating the float switch. im assuming you had a drain problem with the sink? so the dishwasher couldnt properly drain.

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Is there no water coming in( hear no water at all) or no water NOT staying in ( drain motor running) ... the float switch is a safety to keep the dishwasher from flooding ...turns on the drain motor as soon as the door is closed..

I could check the control and see if you have power to the water valve.. maybe a control problem if no power..

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1 Answer

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float switch is in the flood position and the drain pump is running.. there is water under the dishwasher or that switch is stuck up..

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float switch is in the flood position and the drain pump is running.. there is water under the dishwasher or that switch is stuck up..

Aug 14, 2008 | Bosch 24 in. SHU43 Built-in Dishwasher

1 Answer

Wont drain!!!


Check first the drain lines and the drain pump.

If the drain pump is working, and there is no problem in there, then the problem is usually because the water level switch activated by the floating sensor is stuck.

You probably need to have the water level switch replaced.

You can find parts on websites below:

You can find replacement water level switch , and schematics on websites below:

BSH - Bosch Customer Service

Appliance411: Repair Parts

how to mend it .com - ~~ Wiring diagram for BOSCH Dishwasher.

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1 Answer

Will not shut off at end of the drain cycle


there should be a float behind the fill valve with a magnet in it which operates a reed switch. This switch keeps the pump running as long as the base has water in it or if the float is stuck on the up side (and makes the pump "think" that there's water in the base). Check this float to see if it's stuck and release it so it could tell the pump when to stop draining. Hope this solves your problem.

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