Bottom rotating arm doesnt spray water but top arm does
Symptoms are dishes on top trya get washed but dishes on bottom tray dont and rotating arm is still thru wash and rinse cycle.
Does anyone know if the Siemens dishwasher has two separate pumps (1 for top rotating arm and another for bottom)? I would suspect no, and therefore blockage in bottom feed. From a common sense view I cant see why there would be two separate pumps?
I tried looking for an approved engineer but nothing!
Re: bottom rotating arm doesnt spray water but top arm...
I have a similar problem. water is not reaching the bottom spray arm. there. i have an underwater case for my digital camera, so i'm going to put a torch or 2 in some waterproof bags and remove the bottom spray arm and run the dishwasher to see if there's water coming out of the bottom pipe, if not, i need to try and see if there's a blockage in the system, or a dodgy valve, could be that the soldering's or the control panel's buggered.
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I have spent many years (47) in the catering industry using catering dishwashers, under counter models, corner- wash stations and also conveyer machines..
The milky water is a by-product of the wash water and rinse water mixing.
The spray are has to rotate freely or the dishes won't wash or rinse properly. They spins a lot faster than you realise and this adds pressure to the water, but also a pulsating effect to remove dirt.
Over doing the salt can cause more problems that it solves. The gritty film may indeed BE salt. I actually prefer Calgon as a softener.
My advice is to remove both top and bottom spray arms. Check the slots/holes for obstruction, and run water through them under a tap, outside to inside (the opposite to how it is in the machine) rocking the arms up and down to allow any obstructions to flush out. Lemon pips and toothpicks are out biggest problem! Put the arms back and make sure they spin freely. Sometimes they just lock up for no apparent reason!
Use CLR descaler in the machine to clean it using the instructions on the bottle. Then run the dishwasher using the recommended doses of detergent and rinse aid.
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!
Check the screen area around the sump right below the lower spray arm if it is built up with lime deposit then the wash pump is starving for water and cannot pump water to the upper spray arm this would also starve water to the drain pump.
Position the spray arms in a certain position. Activate the dishwasher for a few seconds and then examine the position of the spray arms. If the upper spray arm has not moved, then either there is no water coming to the spray arm or the spray arm is clogged.
Hey- Two things could be wrong.- clog, or bad motor. Sump screen needs to be cleaned of debris. Removal of sump cover to access screen requires torx bits and some patience. Replacement of pump requires pulling out dishwasher to access bottom. Motors fail when seal between motor and pump fails. Will still operate, but become weaker over time. Parts available- motor about 100$ at appliance parts pros.appliancepartspros. Hopes this helps- Thanks- ED
Probably a blocked spray arm. Remove the top spray arm and check and clean all the holes as this is where the water sprays out from to clean the dishes and glasses. When they are blocked you get poor wash results.
hello when you load the machine make sure the spray arms rotate freely i'e the forks an knifes are not sticking through the bottom of the plastic tray. also check the arms for strapped food in the holes hope it helps
The broken bottom arm is probably preventing any water / water under pressure to get to the upper arm.
After you replace the lower arm, you should have much better cleaning in the top shelf.
While you are in there replacing the lower arm, recommend you remove the filter under it and clean the filter and any debris you find. Be careful of broken glass!
open machine when running and check both spray arms rotating - you will get a bit of water out. if spray arms not rotating, usual cause is debris in the arms. the spray arms only rotate by water jetting from angled jets at the end of the arms. take them out and make sure all debris removed
unlikely to be dispensor opening at the wrong time. the powder is washed out by water squirting from angled jets at the end of the spray arm. check no blockage in spray arm - sometimes difficult to see. you may find also that the spray arms are not rotating for the same reason