Question about Bosch 24 in. SHX99A15UC Stainless Steel Dishwasher
Upon start-up, the initial drain cycle prior to filling won't end. Water pumps out until dry and then the pump seems to keep running. I have filled with water multiple times via sink and turned off and on to watch it successfully drain the water but not kick into its fill cycle.
I have added some vinegar thinking hard water might have fouled some sensor or float switch and flushed it with both hot and cold water all to no effect. This happened once before but it seemed to clear itself overnight.
My model is actually a SHX46 but I was able to piece together some advice off of this site. This is what I did. I removed the toe plate and then I soaked up all the water that I could out of the white pan at the bottom. Then I unhooked the water supply line so that I could pull the dishwasher out. Once I got it out, I tipped it forward to drain out the rest of the water. I then unhooked the drain line that was connected to the disposal and cleaned it out with a "Snake line" I then hooked everything back up and it worked. Thanks so much for this website, I know it saved me a ton of $$$$$$$$$.
Posted on Jan 29, 2009
The fill valve is governed by the float switch. I doubt that your fill valve (solenoid) has failed.
Focus on replacing the float switch and you should be all set.
Posted on May 09, 2009
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...
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.
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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Posted on Sep 27, 2011
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Sep 28, 2012 | Dishwashers
It is possible that the machine does not start off the cycle because there are errors due to feedback from the inputs. For the program to start up the main program controller must initiate the INLET/MOTOR/DRAIN pump/ valve to open up and allow each function to be driven starting from the flow of water into the drum as also the drain valve to open to exit the water at the point of the program cycle. If this does not happen then the voltage at the valve/motor/pump must be checked or the fault relates to no voltage from the controller. This means the controller is a suspect since the cycle when advanced seems to go through well.
Make sure that a fault in any of the cycle will relate to the specified action, so check the command from the program module and then the executing device be it the valve or motor or pump.
Please check the link below:
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