Question about Bosch 23 in. SHU303 Built-in Dishwasher

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I have a Bosch SHU3305UC/U12 Dishwasher. It is not filling. I can hear a pump running, but the water never starts spraying inside the tank, and the washer never starts up the "clean" cycle.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 205 Answers

SOURCE: Bosch dishwasher: won't fill with water

The flood switch is tripped. This is located under the unit. Unplug or flip the breaker to the dishwasher, take off the black kick plate under the door, 2 screws, and you will see the white plastic "pan". The flood switch is located where you can't really see it but it is on the left hand side wall and is made of styrofoam. The best thing to do is to put some rags in the pan, this is not easy because there is little room to put them, and soak-up the water that has filled the pan. Eventually you will get enough water out that the float will deactivate the switch. What you hear "running" when you turn it on is actually the drain pump, it get activated when the flood switch is tripped.

Posted on Jul 21, 2009

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rylee_smith
  • 8619 Answers

SOURCE: Bosch dishwasher is leaking fresh water from water inlet assembly

Hi


Thanks for using FixYa. If you have nuisance water leaks around the base of your dishwasher, you may be using a detergent that is causing too much suds. Cut back on the amount of detergent you use, and see if that makes a difference.

Water that spills through the door vent is usually caused by improperly loading dishes. Leaks from the door itself may be caused by a faulty door gasket or door tightness adjustment. you should check the main tub seal, the door latch, the door gasket, the water-inlet valve, and the fill and drain hoses.

Also make sure the dishwasher is sitting level (you can adjust the front feet up or down, and many units have some type of levelers at the rear).

Water under the dishwasher may be originating from a leaky hose or loose hose connection. Remove the lower front panel, and check the hoses. The pump seal may be defective, too; replacing this is a job for an appliance repairperson.

An older dishwasher may corrode at the bottom, but this is fairly uncommon. If this is the case with your dishwasher, it's time for a new one.


Please do rate the solution if the issue is resolved or else revert for further assistance.

Thanks
Rylee

Posted on Nov 11, 2009

  • 254 Answers

SOURCE: SPRAY ARM ASSEMBLEY NOT TURNING ON MY BOSCH

If your dishwasher leaks, check these:

Main tub seal
Door gasket or seal
Water-inlet valve
Hoses
Main tub seal Note… If the main motor of your dishwasher is mounted vertically, beneath the center bottom of the dishwasher, the following instructions probably apply to you. But if your motor is mounted horizontally, the pump isn't serviceable--you need to replace the entire pump and motor assembly.

The main tub seal is beneath the drain impeller. It prevents the water in the dishwasher from leaking out near the shaft of the motor. To get to the seal, which is inside the dishwasher, remove the:

  • Lower rack


  • Spray arm


  • Spray arm support


  • Wash/drain impellers


Then pry the seal out of its housing and replace it.

Door gasket or seal Over time, door gaskets and seals harden and lose their ability to seal properly. You can't repair the seals. You need to replace them if they've begun to leak. 

Water-inlet valve The water-inlet valve, itself, seldom leaks. But, the water-supply line from the house and the rubber tube leading from the valve to the inside of the dishwasher may leak. Tighten or repair/replace these as necessary.

The water-inlet valve could mechanically stick open. When that happens, the water continues to flow into the dishwasher, which then floods your kitchen. Turn off the water supply to the dishwasher, and replace the valve.

Hoses Behind the lower access panel on your dishwasher are several rubber or plastic hoses. If the leak appears at a connection, try a new clamp. If that doesn't work, replace the hose.
  1. A common leaking trouble maker
  2. Another common leaking trouble maker - especially for leaking out of the door area
  3. Can I use a rubber or plastic hose for the hot water on my built in dishwasher ??
  4. Some common pump assembly pictures...
  5. Dishwasher Basics
  6. Dishwasher child lock help new25.gif
  7. Dishwasher soap notice
  8. Draining and washing help
  9. Help for storing an appliance
  10. How to remove the access panels
  11. I just installed my food waste disposal, now my dishwasher will not drain, what could be wrong??
  12. I moved and lost the tap adaptor for my portable d/w, help!!
  13. Important disclaimer
  14. I would like to try to install my own dishwasher
  15. Loading your dishwasher help
  16. Motor and pump assembly screw and impellor help
  17. My dishes are not as clean as they used to be, what might be wrong?
  18. My dishwasher racks have rusted.
  19. My dishwasher will not fill with water
  20. My dishwasher will not start
  21. My soap dispenser will not open
  22. Sand like deposits inside the glasses and d/w
  23. Some common soap door dispensers breakdowns

Posted on Mar 09, 2009

  • 1 Answer

SOURCE: Bosch SKT 20 table top

Bosch SKT 20 επιτραπ?­ζιο νερ?? πλυντ?®ριο πι?¬των σταμ?¬τησε ζεστα?¯νεται, το βραχ?¯ονα ψεκασμο? ?­χει σταματ?®σει να περιστρ?­φεται και ψεκασμ??

Posted on May 23, 2010

Macmarkus
  • 2605 Answers

SOURCE: have a shu 4322 dishwasher it fills with water and

Hello,

Welcome to FixYa.


There was indeed a recall involving the control replacement nearly two years ago now if I recall.

As for checking into the present issue ( it doesn`t sound like anything to do with the control based on your description ) it sounds like the pump impeller may have become stuck. Did the dishwasher sit idle or in storage unused for a period of time ?

I have a service bulletin I could send you via email regarding remedying that issue of stuck impeller if you contact me at macmarkus@live.ca

I`d suggest you run the dishwasher through a diagnostic, but either procedure will require hooking it up.

To do this test/diagnostic on the SHU4322 series machine, it is as follows...

To start test program, press and hold both REGULAR WASH and RINSE & HOLD program buttons, then turn unit on by pressing ON/OFF button. Initially, control module version # will be displayed (e.g./ "20" = version 0 without jumper).

When wash program buttons are released, lights above them will flash. To end test program, press ON/OFF button.
To check each program indicator light, press its button. To check Cycle Countdown display, Refill Rinse Agent light and REGULAR WASH light, press REGULAR WASH button (press Delay Start button to test Cycle Countdown display alone).

Cycle Countdown display will show "88" when REGULAR WASH button is pressed and "8h" when Delay Start button is pressed.
To start testing, press both the REGULAR WASH and RINSE & HOLD buttons a second time.

When testing has ended, Cycle Countdown display will show a fault using codes below. If more than one fault occurs, code numbers will be added together, (e.g./ "6" = faults 2 + 4).
0 = No faults detected 2 = Heating fault 8 = NTC (temperature sensor) fault 1 = Aqua Sensor ("Sensotronic") fault 4 = Filling fault F = Filling fault (display occurs during wash, not test)

0 = No faults detected
1 = Aqua Sensor ("Sensotronic") fault
2 = Heating fault
4 = Filling fault
8 = NTC (temperature sensor) fault
F = Filling fault (display occurs during wash, not test)


To check for heater, high limit or flow switch problems, start testing until heating starts. Using a meter with a current coil, measure current going into dishwasher. If current is ~ 11 A, then heater, high limit and flow switch are OK. If current stays at ~ 1.5-2 A, then heater, high limit or flow switch are faulty.

i.e.

86c0a8d.jpg

If water level switch has failed (opened), display will show fault code "4" and unit will continually fill and drain where testing won't be completed. If flow switch has failed (opened), display will show "0", water won't heat (to 150?F) and water won't stop circulating. If NTC probe has failed (opened), display will show fault code "8" immediately and testing will end shortly after water has started circulating.


What needs to be done to solve the problem will depend on the results/findings of the dianostic, so let me know what you find and we can go from there.

Either way keep me in the loop and I`ll assist you the best I can. Thank you for choosing FixYa and good luck.

Regards,

Macmarkus :)

Posted on Oct 10, 2010

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Dishwashwer not cleaning dishes at all, though it runs through a complete cycle.


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Bosch she45mo6uc/52. came home today and is has a loud hum. looks like it never got water in. the dry soap is just laying inside.


The humming noise is either from the pump motor or the water inlet solenoid. One of them is stuck. Take the mopboard plate off the front of the dishwasher and look for the solenoid. It will be a cylinder with two wires attached stuck onto a box in the water line. Start the dishwasher and touch the solenoid with a finger (naturally not the electrical terminals). If you feel it vibrating in time with the hum but do not hear the water running in, the valve is stuck closed. In this case the solenoid may rapidly get hot; that's why you just touch it with a fingertip.

If water comes in and the big motor in the middle starts humming as soon as the fill is complete, then the pump is jammed or the motor bearings are frozen. You'll have to disassemble the pump (from inside the tub) to see what's going on. You should be able to freely rotate the pump impeller and the motor shaft by hand (this is inside the pump; don't confuse it with spray arm, which is spun by reaction from the water spraying out rather than a mechanical connection to the pump motor).

Another possibility is that the water fill level switch is hung up and signaling a complete water fill when the unit is still dry. If this is the case, when you start the dishwasher you may hear the water solenoid briefly, then the pump will start running immediately. Since it has no water, it will just spin at full motor speed. A quick test for this is to pour about a gallon of water into the dishwasher, then close the door and let it run. If it runs normally until it gets to the rinse cycle, then it's either the level switch or the solenoid valve. (Be sure it isn't a pump problem first or you'll have to get the water out while you can work on it!)

May 24, 2011 | Bosch Evolution 500 SHE45M06UC Built-in...

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My Bosch SHX56BO6UC14 is not getting the dishes clean at all. It's making a grinding sound. It is pumping water & spraying water, but not getting anything clean. help?


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If you are noticing that the dishes are not clean, then there are a few things to check for. Check the soap powder if it's kept in a dry environment. Also try replacing the powder with something like a gel or liquid. Next thing to check for is the water pressure and fill valve. Check if the water is filling in and the spray arms are throwing the water with enough pressure. Try and listen to the sound if you hear a proper spraying action sound.

If it seems as a low water pressure then check the fill valve. Now, check if dishwasher is draining the water or not. While the dishwasher is working check whether the dishwasher is draining and there is not much left out water after the cycle is complete. Try cleaning the spray arm with a soft brush. The water temperature plays a major role in cleaning of dishes. The temp should be between 125 and 150 F for dishwasher to clean the dishes. Hope this helps...

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Bosch Dishwasher SHX46A05UC/23 - No Water


Sounds like your recirculating pump is clogged If it is water can't get up enough pressure to turn the sprayers.
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Bosch Dishwasher Not Draining


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Mar 10, 2008 | Bosch SHU9915UC Dishwasher

1 Answer

Water not going in


This is a little late for the OP. But, I had the same problem over Thanksgiving of 2008. I searched online and saw that other people had the same problem, but there were no solutions posted. So, I paid $130 for a service tech to come fix the problem - maybe this will save you some time and money.

The solution was simple...pour boiling water (I boiled about a half gallon of water in a cooking pot) straight into the pump where the water sprays out of. You don't have to pull your dishwasher out and no tools are needed. Just open the door, pull out the lower roller tray, remove the bottom spray fin (just pull straight up), and pour the boiling water straight into the hole where the bottom spray fin was attached to. Next, put everything back in place, push the Power switch on, select a wash mode, and close the door. The dishwasher should start spraying water inside as usual.

The service tech told me that there are only two pumps in this dishwasher...one to pump the water in (the one that had the problem) and one to pump the water out. When you don't use the dishwasher frequently, the seal in the wash pump seizes up (sticks together). You can hear the motor humming, but the pump isn't able to send the water up into the spray fins. By pouring boiling water into the pump, it helps to break that stickiness and allows the pump to start sending water up into the spray fins. The solution is to run your dishwasher at least once a week. Even if you don't have much to wash, run a rinse cycle to let all the parts move and stay loose.

One other tip the tech told me is to pour a cup of white vinegar into the pump when you go away on vacation and the dishwasher won't be used for a week or more. This should keep the seals from sticking together. I haven't tried this yet.

Hope this helps.

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