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Bosch SMS4012GB dishwasher. Refused to fill. Found tray full of water in base of unit. Mopped up water about 2 litres. Machine works but lower reservoir on the side of the machine with float switch overfills and overflow leaks about an eggcup full each cycle. What is causing the overflow please?

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An electric switch activated by air pressure. This device detects air pressure exerted on it through a flexible tube connecting it to part of a water tub.
When activated, this switch then opens an electrical circuit stopping further filling of water into the machine.. May also be called a PRESSURE SWITCH. if not activated definately it will cause overflow.

Check the wire harness to the pressure switch. or tap your float switch with finger tips may be it get stacked. if nothin happen replace the pressure switch.
Rate my solution if useful.

Prince P

Posted on Jul 24, 2008

Problem was not electrical but a blockage and general scale build up not allowing the metered water to fill the cabinet quickly enough. Thanks for the input Prince P it set me off on the right track.

Posted on Jul 30, 2008

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Have a bosch dishwasher Mod. No. SGI53A55AUSS installed March 2004. All filters clear, exit pump clear and working. Switch on washer can hear exit pump working but machine does not accept water to fill....


Hello,

You said you had water under the dishwasher,did you remove the lower panel below the door and check for water in the base frame as well. Bosch dishwashers have system in the base frame that detects water in base and cuts power off to every component except drain pump till it no longer sees the water in the base.

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The machine stopped with 33 minutes remaining on 96. There is a "pumping" sound but no water comes in. The dial says it is on rinse but it does not rinse. Bosch Dishwasher EN: SHU4326UC/U12 FD8007. 260415...


If you have water filling up in the sump, you will get that scenario. If water is out of the tub, pull unit out and tilt backwards about 45 degrees. If water comes out from the base(sump), then you know you have a leak and need to have it attended to. Note, if water does come out when tilting the machine backwards, you will find it will work again until base is full again.(Switch off before tilting the machine backwards just for safety.

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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.

Jun 28, 2009 | Bosch 24 in. SHE44C02UC / SHE44C06UC /...

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HAVE A BOSCH SHU3306 DISHWASHER THAT SEEMS TO BE STUCK IN THE DRAIN CYCLE?


I have the same problem. Under the unit is a white plastic tray. If that is filled with too much water the float will not let water in. As a temporary solution I found if I soak up the water with a towel it will then let water in. I don't however know why I keep getting so much water in the tray. I posted a question about it but have not solved it yet.

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Bosch Dishwasher pump keeps emptying


Disconnect the power to the unit. Remove the lower access panels and check the tray under the dishwasher. You will probably find it is full of water. Use a towel or a sponge to remove the water. There is a float that will stop the operation of the unit and run the pump if water is in this tray. Test the unit. If there are no leaks, check the drain hose under the sink. THE DRAIN HOSE MUST RUN UP TO ABOVE THE TOP OF THE MACHINE THEN TO THE DRAIN. If the hose is not set up like this, water from the sink drain will flow into the dishwasher and overflow into the tray under it.

If there is no water in the pan under the dishwasher there may be a problem with the pressure switch at the side of the pump housing but the only way to know for sure is to do some electrical testing with a volt/ohm meter and the wiring diagram located within the appliance.

Go here for Bosch Dishwasher Parts: http://www.repairclinic.com/Bosch-Dishwasher-Parts



www.RepairClinic.com

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My ariston LSI 61 water pump is on all the time and the left hand program on top of the door is flashing


the tray under the machine is filled with water and needs to be emptied

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Dishwasher repair


The most common reason why your machine has stopped filling is not the valve, but more likey you have had a leak and the base of the machine is full of water.
If you take the lid off followed by the left side panel ( held on with 2 torx 20 screws ) the lid has two clips at the back and pushes back from the front.
at the bottom of the metering tank towards the front you will see a Red lever going up to a mircoswitch and down to a float. push the lever down to see if the microswitch reacts. if so the base is full of water. empty out and test. try this first, if no luck get back to me.

Mar 23, 2008 | Dishwashers

4 Answers

Bosch Dishwasher SHV4313GB/17 Wont switch off ! The machine keeps running even when you open the door The pump is trying to drain water away (even though there is no water left in machine ) Have tried to...


Introduction: This may work for your problem, but only if you're finding that you cannot get further water to flow into your machine. If your machine fills OK, then this ISN'T a solution to your problem. If your machine doesn't fill but your drain motor continues to hum for no apparent purpose, this may work.

I have a Bosch SHV. My sink drain backed up, and the water accumulating in the sink then migrated to the dishwasher, through the drain pipe, causing the dishwasher to fill up and, it turned out, overflow a little. When I turned on the dishwasher, the water drained, but no new, clean water came through the hot water pipe. The drain just kept running, but nothing else happened.

Here's what happened. Under the main chamber of the dishwasher, by three inches or more, is a white plastic tray. It sits almost at the floor, and it may not be obvious that it's a tray capable of holding water. The overflow water spilled into that tray, which in turn caused a float in the far left side of the tray to lift (the way a toilet float lifts when the water fills in a toilet tank) and shut off the water intake valve (like the toilet float shuts off the toilet water flow). So long as that valve is closed, your machine will not run.

STOP: disconnect power supply at this point for safety.

To see the white plastic tray and thereby fix the problem, you'll need to take off the BLACK TOE-KICK (attached on my unit by two star-head screws at its bottom) and, possibly , the OUTER PANEL OF THE DISHWASHER DOOR (in my case, a custom wood panel (attached by a few screws through the inner side of the door, two screws that are accessed by popping off little--smaller than a dime size--covers on the sides of the doors, and then the door panel lifts up and out). (I took the outer panel off, but I can't remember if I would have had to reach into the white tray without doing so.)

Once you do that, you can see the white plastic tray. It doesn't come out--at least not without removing the entire machine--so try this. You can take your fingers and feel over and into the tray. You'll probably feel the water--I did. Look at the far left of the tray with a flashlight. Back there you'll see a flat, round, 3-inch diameter piece of white plastic sitting at the bottom of the tray. To its center is a generally U-shaped lever looking device, which, at its far left end, is connected to a red stick pointing up into the machine. When water goes into the tray, the float rises, causing the U-shaped lever to rise, causing the red stick to raise, which (though I couldn't see it) causes an electrical signal to run to, and shut, the valve for your water intake.

I took paper towels, and then a narrowly cut sponge, to sop up the water in the tray. I then took my shop vac and, using it as a blower, blew what little water was left right out. You might be able to use a hair dryer, but first sop out what you can or it'll take forever. Once you've done that, put everything back together and plug your dishwasher back in. My buttons are at the top panel. To reset, hold down the two buttons marked for clear drain for three seconds and release. You should be able to start up then. It took 15 seconds before the water started to run, but it did and the machine works fine again.

Interesting note: The valve that stopped the water from flowing in automatically opened once I got the water out of the tray. You don't need to reset the valve.

Good luck.

Montpelier Man

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1 Answer

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remove the kick plate below the door. youll see a white tray behind the kick plate. theres water in the tray thats activating a overflow switch. with a towel or 2 remove as much water from tray as possible. this will solve problem

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