Siemens integrated dishwasher not cleaning dishes properly anymore and tablet not dissolving anymore, going through cycle perfectly normal, both upper and lower rotating arm working perfectly, salt in screwcap area, very hot as usual at end of cycle, unless dishes go in cleaned, they wont come out clean, any ideas please ?

SOURCE: Lower Spray Arm doesn't Rotate on Siemens SE55A560 Dishwater

upper and lower connection should be same type of setup
missing part thus?
This sometimes is also caused by not driving in right the rack (closing properly) mating the connections tight. My old Bauknecht had this little problem.
Unfortunately I have no manual with parts drawings.
Still warranty?
Parts shop nearby?
Upper connection does have rubber ring or is a conical seal?
And when you fill the basket, no teaspones or such dropping too far down? My error many times.........

SOURCE: lower spray arm siemens aquastop dishwasher doesn't rotate

Sprayers require water to pass through the jets to provide motion to the arms.

Suggestion;

Remove the sprayer from the machine and look for blockages. (Removal should be easy, at it is expected that the user will need to clean the jets occasionally; If you have any problems removing it, consult your manual).

Testimonial: "Thanks for a speedy and v helpful reply. Sounded obvious, but I hadn't checked the water inlet(which was calcified)just the jets on the arm itself! "

SOURCE: The upper arm is not rotating

Take it apart and clean it, water pressure should spin it around, there are bits of food/rice plugging it and stoping it from rotating.

SOURCE: Have 5 year old Siemans. Perfect until about 3

There are a few possibities...
check the spray arms are clear by removing any blockages in the holes, check that there is enough water entering the d/w by removing the lid (no screws on lid, there are two clips at the rear, release them and the whole lid will slide back and then off) and take the two t20 screw off the left side panel at the front you should check the pressure chamber and its hose are not blocked. Use the link and go to page 4, part 0428 and 0426. Whilst you have the side panel of, fill the d/w and once the inlet valve closing, reset the machine and watch the drainage thru the left chamber is flowing ok. You can also remove 0420 (remove t20 screw via the sump after all filters are removed) this will expose the pump impellor and you can check for any obstruction. If the d/w is connected via a sealed spigot to the sink, remove the grey hose and unscrew the spigot adaptor from the sink and ensure there are no blockages.
You have not mentioned that the d/w is not heating so I assume it is, as this could be a problem also. However, although the machine is heating the water is distributed via a motor attached to the heater box that alternates the water between the top and bottom basket. If this is faulty you will find that the d/w will clean one of the baskets beautifully and the other not at all. (unfortunately this will req a new instantaneous water heater which is best fitted by an expert)
https://www.bosch-eshop.com/eshop(bD1lbiZjPTAwOQ==)/bosch/gb/prodp.htm?prod=SL84A306UC%2f26&ESHOPTYPE=S
I appreciate that this is not you model but the parts should be in the same position.
If you req any further assistance pls repost, if this is helpful pls leave feedback.
Best of luck.

SOURCE: My siemens dishwasher bottom arm does not spin to

Hi,

I have an older dishwasher also and recently my wife also complained about it not cleaning right... so me being the man I am tried in vain to clean the things... Bought new spray arms online and installed them in minutes...now the thing works like new... However I have also found that if the heating element goes bad then that also can mess things up bad... So I would buy new spray arms, and also check out the heating element to make sure it is working... Here is a tip that will help you with the online buying...

Dishwasher Spray Arms not Spinning

How to Buy Appliance Parts Online

A bad heating element causes many problems in dishwashers...

Dishwasher Problems The Heating Element not Working

Dishwasher Maintenance

Dishwasher Residue and Film on Dishes

heatman101

Asker's Testimonial "explanation very clear. will give it a go and see how simple it was. thanks Ronnie " - ronnieshomes