Question about Bosch 24 in. SHU43 Built-in Dishwasher

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SHU 4300 top arm nozzles getting clogged

For the past 2 weeks or so, the arm nozzles, especially the upper ones, have been getting clogged every time we run the dishwasher. I have been removing the particles and cleaning the filters after every run, as well as being careful not to load the machine with excessively dirty plates, but am surprised that it's continuing to happen.

Now I'm wondering if the problem might lie in the microfilter - is there a movable part in there that may have fallen out or broken and now causing food particles to come back up? Do they tend to need replacement after a couple of years? Our dishwasher is approximately 6 years old.

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My Hotpoint dishwasher works fine except that it will no longer wash the dishes in the top rack. It's like the water is not coming up far enough from the bottom to do the job.

There should be an upper spray arm to wash the upper rack, it may be stuck. Look at its position, run the machine a few seconds and see if it moved. The spray nozzles on the arm often get clogged with food particles. the pipe feeding the spray arm has to extend when you pull the rack out and retracts when you push it in. Make sure it works properly and has not disconnected.

Sep 04, 2017 | Hotpoint Dishwashers

1 Answer

Dishes on top shelf not getting clean

Check your upper wash arm.... check the holes, especially the ones at the end of the arm. Are they possibly clogged with debris or hard water? This is the usual cause of dishes on the top rack not getting clean. The holes at the end of the wash arm are angled to eject the water at an angle to use the reaction to push the wash arm around. If those holes are clogged, then the arm won't rotate, and only those few dishes or glasses right under the arm will get clean, and the remaining 80% of the dishes on the upper rack won't get clean!

Sep 13, 2014 | GE Dishwashers

1 Answer

On my Kenmore model 665.13489K900, it does not clean well and appears to have a problem with getting or circulating water inside to all areas, especially the top shelf.

Check the center wash arm assembly. If the center wash arm isn't getting water, all of the dishes in the upper rack will come out dirty. Check to be sure the center wash arm assembly is mating properly with the water supply nozzle in the back of the dishwasher. Also check to be sure the little holes in the center wash arm aren't clogged or blocked. * Run empty cycle using vinegar and baking soda lime scale problem will resolve.

Nov 13, 2013 | Kenmore 15912 Built-in Dishwasher

1 Answer

My soap doesn't dispense out of the dispenser of my Whirlpool ADP8540. Can someone assist?? I have checked the draws are in correctly and there are no obstructions. It goes through the whole cycle...

Hi and welcome to FixYa, I am Kelly

There are several things you need to check.
1. The Upper and lower wash arms for internal debris. NOTE how they are installed... The lower wash arm it would be wise to take a picture first before removal. Take them off one at a time. Flush and clean them making sure there are no clogged spray jets.

2. While the lower wash arm is removed inspect arond the lower wash arm support for any clogged passages. Clean as necessary.

3. Use a flashlight and look around the lower wash arm support especially from the top and sides.
You may have to remove the support to clear any obstructions. Make sure to ONLY remove the support screws and not the pump motor screws.

4. The last thing to look for are things like a damaged sump housing or pump motor impeller.

5. Pause a cycle and check the water level. If the water level is too low due to a damaged float switch actuation arm this could also cause the symptom your dishwasher is presenting. It can cause the unit to cycle on with very little internal water. Time the fill cycle... and let me know how long it takes to fill and start.

Thanks for choosing FixYa,

Jul 26, 2011 | Whirlpool Dishwashers

1 Answer

Every time I print, the printout always has black horizontal lines on top of the requested document. How do I fix this? This has now been happening for the past week.


I believe the print head is clog and need to clean it. Try this solution.

Remove the ink cartridge and clean the print head using a cloth with rubbing alcohol to remove clogged ink in the print head. Then rub the printhead into a plain paper until ink flows. Then try to print again

If still not working, run the print nozzle for 2-3 times to clean thoroughly.

Please rate and make a comment if you find this solution very helpful and might help others as well. Post more comments if you need more help.

Regards and thank you for using Fixya !

Apr 20, 2011 | Dell 926 All-In-One InkJet Printer

1 Answer

Bosch SHU 8805 upper arm is getting no water.

replace the upper water arm conduit and wash arm hub as they leak under years of pressure and the o-rings leak water and then it can't hold pressure and supply the upper arm with full pressure water,also replace the center arm conduit if it has one as this will wear out too

Mar 23, 2010 | Bosch 23 in. SHU 8805 Built-in Dishwasher

1 Answer

Hi, the dishwashers top rack dishes are not being cleaned.. help?

sounds like the upper spinning arm is not turning check to see if it is clogged at the nozzles if so take off and clean particles out also check bottom ofjet that spray soap up to upper spinner and see that is not blocked

Nov 12, 2009 | Whirlpool 24 in. DU1100XTP Built-in...

1 Answer

Low pressure . arms don't rotate

Hello there:
first you will want to make sure that all of the filters are clean
next check to see that the water supply hose have not become clogged or kinked .
next look at the filter that is under the arm assembly you will have to remove the upper spray arms to get to the filter make sure that this is clean now look very closley at the spray arms especially the ends they have very tiny holes that can easily get clogged. a tooth pick or a medium sise needle works very good to remove any thing in these nozzles make sure you look at EVERY ONE of them ok
once they are all cleaned you should be all right
best regards michael

Sep 29, 2009 | Dishwashers

1 Answer

Washer arm not working

If your dishes are getting clean, then your problem is a "feture" not a failure. The LG LDS5811 has a Verio motor/check valve that switches between cleaning the upper dishes and then the lower. Depending on when you open the door, one arm will not be spinning.
All the presure is routed either to the lower or upper arm, so it really does help - especially with a water conserving model like the 5811.
Good Luck!

Mar 06, 2009 | LG 24 in. LDS 5811ST Stainless Steel...

3 Answers

Top arm not spinning

only the top rack isnt getting clean?
there is a little plastic circle in the middle of the bottom of the upper spray arm. turn it counter clock wise to pull the upper spray arm from the upper rack. make sure that isnt clogged and the spray holes are not clogged. otherwise....

the piece that the bottem spray arm plugs into and runs along the back wall of the tank to the top is called a feed tube. pull the bottom spray arm out. now you can see the part of the feed tube that feeds the upper spray arm water. does it pop out freely and easily? if so then you need a new feed tube, if not then its most likely your not achieving the right water level or your impeller connected to your circulation pump(motor) is clogged not supplying enough water pressure to travel up the feed tube to spin the upper spray arm.

Jul 13, 2008 | Bosch 24 in. SHU43 Built-in Dishwasher

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