Dishwasher fills and drains at the same time

it needs service, so call for it.
lots can be wrong even partially clogged drain paths.
the washers have float valve to detect how much water is in the pan to drain, so clean or replace this valve.
RTM , PAge 57
clean,. these parts

https://www.manualslib.com/manual/528082/Miele-G-1470.html?page=57&term=valve&selected=1#manual

Wash pump went out. Drain pump still works.
Not enough water. Improper water fill.

try changing the power supply built-in the board.

what I can tell you is that if the water temp is not high enough say 120 deg, the dishwasher washing cycle will extend.chk your drain hose and float valve for fill drain issue.

I’m happy to assist further over the phone at https://www.6ya.com/expert/phillip_77d32603f8052503

We have a Candy CDI2012/E-02 32900347 1330 3315 dishwasher from around 2013 that once stopped working about 3 years ago. A constant beeping signaled the problem after trying to initiate the washing cycle. Not remembering the details, replacing the controller card (~€50 ebay) fixed the problem at that time.

Now we had a problem again, similar to the one above. Once any of the programs was started, the dishwasher would first drain any remaining water (if detected any), then fill for a few seconds, then start draining/refilling again for about 3 times in a row until the controller detected there was something wrong. Again, everything stopped with a constant beeping. Replacing the controller card did not help this time.

There were actually two independent problems: We noticed that the inlet water hose was kinked. Thus, only little water would enter. Straightening the hose did not solve the problem, though.

We then thought it may be the flow meter. But it is extremely simple in this machine, turned nicely and did not seem to be the culprit.

However, we noticed some deposits in the water reservoir that also connects to the inside of the dishwasher. These calcareous deposits apparently clogged one of the channels. This may have induced some pressure difference, which the controller apparently interpreted as some water level problem. Unmounting the water reservoir with the built-in impeller, dissolving the clogging with toilet descaling agent solved the problem: the dishwasher is working again.

Actually, no electronic parts had to be replaced.

If your dishwasher is brand new, then call Bosch service as they can repair it under warranty.

It sounds like your motor is stuck in the reverse position. It could also be in your timer. I would suggest calling a qualified technician for the one. Just because the parts are pricey and depending on how much a new dishwasher cost. Atleast get a diagnosis so you can know if its worth fixing or buying a new one. If you have anymore questions please feel free to comment me back.

Trouble shooting GE dishwasher
Model GSD6600G00WW

Air gap is clean
Garbage disposal is clean
Dishwasher fills with water OK
Drain pump runs after a wait of several minutes and seems to run slow but drains most of the water out of the reservoir.
Dishwasher is not running the wash cycle (spraying water on dishes)

Two things to consider....clean water or dirty water?
Clean water usually indicates the fill valve is not shutting off all the way and the fill valve is "weeping" water in all the time = new fill valve time!!
Dirty water usually is not a dishwasher problem but more of a plumbing issue. Often the sink drain that carries the sinks water outside is not fast enough and some of this sink water is backing up into the drain hose and filling up the dishwasher through the drain hose. The drain from the sink to outside needs attention as this type of a problem indicates a slow house drain for that sink.
The dishwasher drain line should be clamped to the top underneath part of the counter before entering the sink drain plumbing, this may help the water from coming back inside the dishwash
If the cycle doesn't complete, check these:

Water-heating cycle
Timer
Water-heating cycle Many dishwashers heat the wash and/or rinse water to a higher temperature, as the cycle calls for it. In these cycles, the dishwasher pauses after it has filled with water, waiting for the water to reach the pre-set temperature. What happens next, depends, as follows:

• On some units, the pause is timed and the unit continues after the allotted time.



• On others, the cycle can't continue until the water reaches the higher temperature. If you have this type of dishwasher and the water isn't being heated (say, because of a problem with the heating element or thermostat), after the unit stops at the heating cycle, it never continues. When you repair the heating-system problem, the "cycle problem" is fixed too.

Timer Timers don't often fail. But if every other part of the dishwasher seems to be working properly and the timer knob seems to be stuck in one place--doing one function continuously--the timer may be at fault. Dishwasher timers can't be repaired. If yours is defective, replace it. 

Bosch dishwashers have a seperate pump for washing and another for draining. Try making it fill more than once. There is usually a timed fill and the float stops it before it overfills It also might prevent it from washing without enouth water Try defeating the door switch and play with the float during fill. There may be a sensor that won't let it go into wash. Be prepared to get a little wet if it should start up suddenly. A slightly safer way is to fill it with the sprayer from the sink. and see if it will go into wash.