Question about Bosch 24 in. SHU43 Built-in Dishwasher

1 Answer

When starting the dishwasher there is only a hum but nothing else happens

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,140 Answers

The first thing a Bosch dishwasher does when you start a program is run the waste pump. This ensures that any residual water and waste is removed from the machine before the wash program begins.

The hum you can hear is most likely the pump motor trying to drive the impeller. This can become clogged with waste and seize up, preventing the wash cycle from starting. There is an easy way to check this:

(It's easier to do this with the washer empty)

1: Select a wash program

2. Press "Start" and wait for the humming noise

3. Open the door and pull the bottom basket forward or lift it out completely

4. Find and lift the float (the plastic dome/mushroom in the bottom of the washer) all the way up

5. Keep the float lifted and the dishwasher should pump out. Stop if/when you hear a gurgling noise as this means it's empty and pumping mostly air.

6. If the pump doesn't start, lift the float again for about 1-2 seconds then let it drop again for 1-2 seconds. Repeat this 10-20 times and see if the pump starts. The repeated stop/start signals to the pump motor can sometimes free a seized impeller.

If the pump does start, keep lifting and dropping the float switch (1-2 seconds each time) to see if the pump starts every time. If it does, you should be OK to use the washer, but further action is needed to stop the problem returning.

When you've done all this, post the results here and I'll advise you what to do to fix the problem or prevent it from returning.

Posted on Oct 11, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Machine starts fills Ok but when it clicks on to start the wash pump, nothing happens, I can hear a faint hum. When cancelling wash and starting new wash it pumps out ok too. After rinse cycle it indicates...


sounds like your main circulation pump is not working, if it is humming when it is supposed to start, sounds like it is getiing power, so probably not the control circuits, can you measure voltage to pump?
if you are getting 120 there, probably pump motor is dead

Mar 02, 2013 | Asko D1876 Dishwasher

1 Answer

Problem with candy dishwasher model CSF 456M.


hi it may need a new inlet valve,can you hear a humming sound when its due to fill.or is it doing nothing.if its not humming change the valve,also these dishwashers are well known for overheating and sticking on cycle.

Jun 01, 2010 | Dishwashers

1 Answer

The dishwash is not washing, it's running but there is no water. The washing cycle is completed but nothing has happen, this recently started.


Sounds like a bad water valve or the water supply is cut off. If the water supply is not cut off then try hooking up 120 volts to the water valve. It should buzz or hum and let water in. If no water goes in then change the valve.

May 15, 2010 | Dishwashers

1 Answer

GE diswasher hums but will not start cycle and starts to smell ho


Hi, Have your freind check and see if the water supply line under the sink has been turned on. The hum you are hearing could be the inlet valve. Please let me know if this has been helpfull or if I can assist you further.

Thanks
Vic

Jul 17, 2009 | General Electric CDW9380N Built-in...

1 Answer

I have a GE Potscrubber dishwasher that only hums, won't run


I have a portable that had the same problem. I called a repairman and he turned a fan blade on the motor. Mine is located on the right side about 12" in. It gets hung up when it is run often enough. If your problem is the same is mine all you have to do is turn the blade and it works like a charm. Hope this helps.

Feb 18, 2009 | GE 24 in. GSD2000Z Built-in Dishwasher

1 Answer

My dishwasher just stop, the red light come on and nothing happen


check the filtrs in the machine are clear and the waste pipe is not blockedput it on rinse cycle and see if it empties

Jan 26, 2009 | Bosch 24 in. SHU66C02 / SHU66C06 Built-in...

1 Answer

Can't get the dishwasher to start!


Sounds like the pump seal is stuck. Cut the power and look at the back of the motor. There will be a cooling fan in the end of the motor. take the fan and keep rotating it until the seals break loose.

Jun 28, 2008 | GE 24 in. GSD2000Z Built-in Dishwasher

1 Answer

Frigidaire dishwasher does not clean


the start switch in the motor is probably bad,it could also be the motor relay.if you can get to the motor run the unit and while it hums try to turn the motor.it also could be something is stuck in the motor let me know.

Aug 13, 2007 | Frigidaire 24 in. PLD2850 Built-in...

Not finding what you are looking for?
Bosch 24 in. SHU43 Built-in Dishwasher Logo

1,342 people viewed this question

Ask a Question

Usually answered in minutes!

Top Bosch Dishwashers Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Gerry Harvey
Gerry Harvey

Level 3 Expert

1467 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18408 Answers

Are you a Bosch Dishwasher Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...