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It may be a sticking float switch. The float switch controls the level of water in the dishwasher and if it is sticking on or off it could cause them problems you have
part numbers 263834 and 263185.
Hope this helps
No drainage, or poor drainage issues are usually caused by either a failed drain pump, or the sump area under the sprayer is clogged with debris. The sump is the area at the bottom of the tub where water collects on the initial fill. A wash pump cycles the water throughout the wash cycle, followed by the same water being drained from the unit by means of a drain pump. This area is usually covered by a coarse screen and fine screen to prevent debris from accumulating. But, over time, some debris may still get past the screens and collect in the sump. This usually results in poor cleaning results due to restricted water flow through the spray arms, and poor draining.
I would recommend you remove the lower spray arm and screens and check the sump area for obstructions. If the unit still has standing water inside, use a wet/dry shop vac to drain. Remove the drain line from your sink and pull a vacuum on the end of the dishwasher drain hose. If the water drains freely from the unit, then you probably have a bad drain pump. If the water will not drain, you have a clog somewhere. Check your drain lines and pump for obstructions.
If you have any questions, please post back with a MODEL NUMBER. I hope this helps you.
I have this same problem! Just started happening. My Bosch drains fine but only a very little water is entering the unit and it seems to be coming thru the arms on the bottom not the top. Help! I checked the arms and they are clear, drain is clean.
I checked the control panel, it turned out to work correctly, the drain pump has got the juice. Then I opened up the coverabove the drain pump (1 screw, below the drain filter) and God forbids, I found a chicken bone blocking the impeller of the pump. How it could get beyond two filter levels? Somebody must have opened the filter without looking if there was anything on the top of it!
So when the drain doesn't work next time, look for the most obvious: some garbage beyond the filters.
This was a BOSCH SHU5305UC/U12 type DW and until now it is fine.
When I checked the panel, I found that the power connector (the only triple one on the left side) had some burn trace on the black wire connector. It must be an erosion due to high amperage for the heating. I'll have to get soon replacement because erosion will continue until the whole DW will stop.
Im really not all that familiar with the bosch unit, but a few things i would ck. when you cancel a cycle (it should drain the water) is it humming??? does it sound as if it even trickling into the sink discharge?? do you have a disposer under your sink that this unit drains into, if so remove the clamp and look for possible obstructions right there.Honestly passed this ill have to defer to someone else sorry and good luck
remove outer door skin and kick plate at base pump will be on view turn off power look carefully at pump you will see a lever you have to cut away a small section of plastic on lever to be able to push it inwards pump then twists off anticlockwise is a bayonet fitting like a light bulb.
there is a float in the tub looks like a little dome or such if its not touching the micro switch under it and pressing down on the leaver then the washer thinks its over filling and will not let the valve turn on remove the lower panel to see if its on the switch if not make sure the water is on then start the washer and see if the valve solenoid is getting power