It seems that not enough water is coming in. The floater is not stuck. The holes of the big revolving sprionkler seem somewhat clogged, but I cannot remove the screw to remove the part for cleaning. Someone told me to replace the inlet? valve(s). I do not have a service manual so I do not know how to go about it.
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I found that after 3 washes the flood well had enough water to activate the float switch thereby rendering the machine inoperable. What I done was drill a small hole in the plastic base well - the waster that drains out is minimal, not even noticed, but enough to keep the machine working.
I have a Samsung DMT400RHS and I started getting the low water level error ('Normal'+Heavy'+Smart Auto' LED blinking). The error started intermittently a few weeks ago, but the the last day or two the problem was solid, and simply restarting the cycle no longer worked. I looked of the code in the dishwasher user guide and it said 'low water level.' Searched the internet and located the repair manual at tradebit.com for $15. The manual was well worth the $15. The manual suggested: 1) loose level sensor connector 2) Faulty Assy case sensor or stuck floater aka 'remove foreign matter' 3) Bad Main PBA assy. Since we do 10+ loads a week for the last 18 months the stuck floater seemed to be the most likely cause. Go to Samsung DMT400RHS Low Water Level Error ('Normal'+Heavy'+Smart Auto' LED) (new link is https://photos.google.com/album/AF1QipNtp1neOR7icVG8cSs71bLpxQD5k_xljiWcJD2P click the i on each picture to see the caption - DM 04/17/2016) to see the pictures and read the captions documenting what I did. Do this at your own risk. You must turn off and disconnect the electric power and turn off the water supply before you begin.
d02 Error may have following Causes:
1-drain hose kinked or plugged
2- drain pump failure
3- accumulation of debris in filters and causing the floater positioner got stuck
if there is the flow of water through the drain hose it may that the floater inside the bath got stuck, if this is the case, remove the filters, unfasten the bolts and remove the inside cap until you can see the floater.
clean debris from inside surface of the washing machine and also clean the floater.
top spray arm will be blocked with sediment/food deposits etc remove clean thoroughly with hot soap water and shake/tap it on side of sink to dislodge deposits if the outermost holes are blocked the arm will not turn and you will get poor wash results.
If I got your issue correct your Bosch Dishwasher does not fill enough water. There are some things to be done.
There is a Floater inside the tub protecting against overflow. when it is pushed up (by too much water) or stuck by debris, and does not fall down to its inactive position, it can prevent water from filling.
make sure there is no debris,and move the floater up and down until it falls down in its normal position.
PS : there is a floor cover underneath the door, it has a repair manual glued to it on the back. you can use "diagnostics" mode by pushing a specific sequence on the front panel, allowing you to go through each cycle in an accellerated way.
1. No water
Make sure you get water to the dishwasher. Check to see if the water
shut-off valve (located under the sink) is open. If you get water to
the dishwasher, but there is still no water inside during the fill
cycle, the problem might be with a faulty water valve (located at
the bottom of the dishwasher, behind the kick panel, on either
side), in which case replace the water valve.
2. Not enough water
If there is not enough water, the dishes would not get cleaned. This
could be caused by a partially closed water shut-off valve (located
under the sink), or a faulty dishwasher water valve (located at the
bottom of the dishwasher, behind the kick panel, on either side).
3. Clogged spay arms
There is usually two, sometimes three spray arms in a dishwasher.
Make sure there is no debris blocking the holes inside each spray
4. Water temperature is too low
To get the best results, the water has to be at 120 degrees
Fahrenheit when entering the dishwasher.
5. Not enough soap
If you only fill one part of the soap cup, try adding soap to
6. Smoky film on dishes and glasses
This problem occurs due to excessive calcium build up inside the
dishwasher. Try cleaning you dishwasher using a dishwasher cleaner.
Remove each arm and inspect the small spray holes for plugging. Use a vacuum in the center hole and poke out each plugged hole. Unless your vacuum allows wet pick-up, make sure the arm is dry first. Try using a capsule type of detergent instead of liquid. You might have to tear down the lower spray arm assembly to the deck to clean the large screen which may be plugged with water/food deposits. Use hot water, detergent and white vinegar to clean the screen. Hope this helps!
If the cycle does not stop draining that is usually because of a faulty
water level switch that controls the water level in your appliance.
The faulty sensor cause the machine to think that there is still water inside, even when water has drained completely. Check if the floating sensor is stuck or faulty. Some machine may use a membrane switch instead of a floater.