I just replaced the drain pump in my bosch shu3307uc dishwasher.When I turned it on it filled with water and then I put it in the drain mode' It drained but it would not allow me to advance to start the wash cycle from the beginning. How do I advance this unit? It was working fine until drain pump went out.

this sounds like flow sensor failure,it it fails machine will either not fill up or fill and drain without washing its a cheap part to replace and is fitted downstream of inlet valve behind l/h/s side panel either attached to inle hose or heat exchanger.

Hello, welcome to FixYa.

Based on your post I understand you have a Bosch SHU3307UC dishwasher, correct ? Firther to this you.ve stated "slowly fills the bottom between cycles, even with little or no activity at the sink"

It sounds to me like the fill valve is at fault unfortunately. This is a very common problem for Bosch dishwashers of that era.

A faulty fill valve...sticking in the "open" position either due to the plunger in the coil getting stuck or sediment inside the valve body impeding it from closing correctly...Either way you're safer to change it with the history of these valves failing.

This is what to look for...



As long as your model is indeed a Bosch, this info below will be accurate.

Original part is # 425458. It usually retails for about $20 - $30USD at places such as "searspartsdirect.com" "repairclinic.com" to name a couple, if needed. They may be available at your local brick & mortar parts depot/vendors.

**Before attempting to repair the unit please turn off the power and the water supply to the dishwasher...safety first**


If you remove the lower kick plate/toe panel, you will see the inlet valve to your left...

i.e.



Replacing it or to check for debris in the filter/screen at the inlet is pretty straight forward. Here`s how...

1) undo the water line. ( here you can visually inspect the screen in the valve...if nothing noted, you'll likely need to replace it as follows )

2) Remove the two #20 torx screws fastening it in place.



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


and



Once the new one is in or it's all clear you should be good to go.

Let me know if you need any further assistance. Thanks for choosing FixYa and good luck.

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Macmarkus :)

Water is not drying from dish

there is a float switch in the base if you tip machine to the left water will trickle out allowing you to reset machine but if it has a leak you will have the problem return until leak found.

the unit is going into drain mode. check your hose for leaks. when water leks in the base of the unit the float switch is activated and the unit will stay in drain mode until the water is removed. check float by removing side panel and look into bottom base for water.

The drain motor (pump out motor) in line with the outlet pipe could be faulty. This motor must spin (to pump out water) in the drain mode. If AC (mains)voltage is across motor in pumpout mode and the motor does not spin indicates that the motor is open circuit and needs replacing. Has one of the 2 motor push on electrical connections dislodged?
Is the outlet pipe obstructed?

water in the bottomof the base remove side panel and dry out the bottom base . the float is up . thats why its in drain mode. bosch old tech speaking.

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.

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..

Bosch dishwashers have a seperate pump for washing and another for draining. Try making it fill more than once. There is usually a timed fill and the float stops it before it overfills It also might prevent it from washing without enouth water Try defeating the door switch and play with the float during fill. There may be a sensor that won't let it go into wash. Be prepared to get a little wet if it should start up suddenly. A slightly safer way is to fill it with the sprayer from the sink. and see if it will go into wash.