Pull filters out and check and clean them also access the pressure switch under the dishwasher pull the tube off and give it a good blow to clear that , put it back together and see what happens
Also tip the machine back 45 degrees and see if any water comes out you could have a leak and be...
You can buy yourself from Aldi or Lidl a smart charger for around £13 which is a rebranded ctrl
For cheaper than killing a battery because you're not keeping it charged
Click on the link and scroll down to page 34 , page 34 definitely exists I looked at the manual this morning (how else would I have known which page you needed?)
Why do you want to create a new program?
The wiring should have been done so that prog 1 will allow you to full set the system
Which manual do you have the engineers one or the end user one?
As a guess, blocked drain so water overfilled in bottom of dishwasher overcoming the door seals
You will have to see if you can empty it , start a new cycle and watch/listen to it
Silly question but for clarity have you run the heat exchanger under the tap and given it a good rinse?
Also there is two airflows on a condenser have you cleaned both pipes to ensure good airflow over the heat exchanger?
From memory that error normally refers to insufficient airflow causing...