There’s a common failure in this case. The Ecowacs Ozmo 950 is a vacuum cleaner with the function to wet wipe the floor. This may cause some water on the inner electronic parts. Sometimes this leads to corrosion, shortcuts and further damage. A solution to avoid that problem could be to get some isolation on the circuit boards… If you are able to solder smd resistors you’ll even be able to repair the motherboard in this case. First completely disconnect the motherboard. Then you need to measure the resistance of the bigger resistors. There will be at least one resistor which is broken. There are 10 Ohm, 18 Ohm, 30 Ohm and 33 Ohm resistors. The size is “1206”. There are plenty of sample books with 170 different types of 1206 and resistors. Then find a tutorial how to soldering smd resistors and you are good to go fix your motherboard with the anti drop sensor cleaning error.