f5 error that doesn't go away

[david smth]

The problem is that the dishwasher is not getting enough water while it is running. The water supply hose takes normal water and the drain hose drains half of the water. This should not normally happen.
The machine works, takes in water, the hose drains the water and gives an F5 error. Normally it should do this, I couldn't find the reason. This is my first post, I want help, please don't get me wrong, I'm not a troll, my question is, I set a program for this machine, then it works, water comes from the hose that receives water, water comes out from the other hose, and this turns into an F5 error. It is necessary. I have moderate knowledge of electronics and repair, not much, this is my first experience, please help.The drain hose drains the water while the machine is receiving water.
Because this happened, F5 appears, I tried resetting, I checked the pipes, I checked the sensor.

[david smth]

Drain hose randomly discharges water while the machine is running. Is this due to motherboard failure?

[madires]

Brand and model?

[Ian.M]

Our crystal balls are too cloudy to see how to solve your problem.  Read https://www.catb.org/esr/faqs/smart-questions.html and find out why!

Edit: catb.org currently has a bad SSL certificate.  You may prefer this copy of the page at archive.org from just before the bad certificate: https://web.archive.org/web/20240706080630/https://www.catb.org/esr/faqs/smart-questions.html

With that out the way, the first thing to suspect in any electromechanical system that handles water is any electrically controlled moving part or sensor in contact with the water.  I therefore would first look at the drain valve to see if maybe it doesn't close properly, then would look at level sensors.  The main board is way down the list of possible causes, and would only be worth investigating if you can show that the valve is not getting the correct drive to it (e.g. on when it shouldn't be), or there is evidence of water leakage that may have reached the board.

Good luck and be careful - mains electricity + water are very unfriendly to your safety.

[david smth]

Send this link to the person who wrote this, you will get better results.

[david smth]

these pictures

[wraper]

Do you think we have a crystal ball to guess brand/model of your dishwasher is to know what that error may mean in particular dishwasher?

[Runco990]

Looks like a Bosch.

I'd look at the water inlet screen first, though.  Depending on the pipes, there could be a large buildup of crap in it, restricting the water flow.

[Haenk]

Can you immediatly re-run the program from the beginning, i.e. water inflow starts, then later F5 appears? That would at least exclude a leakage from sump.
Other than that, a make/model would certainly help, seems like every manufacturer uses code F5 for some error.
Also, make sure the sump is clean and the pump spins freely.