Citroen Jumper 2,2 Hdi 2009 - Damaged air suspension / control ??

Hello, I experienced a problem with the operation of pneumatics in my lemon, namely yesterday evening, when returning home, the car was mercilessly smashing the holes. After stopping on the roadside for inspection, it turned out that the suspension was in the position of zero pressure in the cushions (the comp shows the value -3 and the self-leveling error message) and it stayed that way.
The car remains in the -3 position all the time, it is possible to change the value of the suspension position from -3 to +3 in both directions, but the compressor does not start and nothing happens.
After reading the forum, I decided to remove the compressor and do a thorough cleaning (especially of the electronics), the board itself was not in some tragic condition. A slight leak of moisture through the housing, but it seems to me that the water did not reach the electronics itself.
The compressor itself, unfortunately, did not look so rosy anymore. Lots of muck and rust. Everything is cleaned, polished (where it was needed) and properly lubricated. Compressor motor briefly started without problem.
And now I have a question, how is this compressor powered and controlled.
There is no voltage in the compressor power supply (I'm talking about the cable on the chassis that goes to the compressor), it is checked with only the ignition and the engine turned on. I have no experience with this suspension, but it seems to me that the voltage on the compressor plug should be applied continuously and the electronics decide when the compressor is started or turned off (if I'm wrong, please correct me). So in this situation, somewhere in the car there should be a fuse / relay responsible for the voltage on the compressor, where to look for it (none of the diagrams that I found on the internet says about its place) ??

Wit, as you can see, there was no helping hand in my case. But I was lucky and I managed on my own (luck, read a mechanic friend shared the channel and you could easily trace the path of the power cables). According to all the technical knowledge I have reached, the fuse responsible for powering the compressor is No. 59 and should be located in the box in the pillar next to the passenger's door. However, for me it did not look like this (I am writing about it as a tip for others). The solution turned out to be so trivial that it was difficult to detect. The power cord ran directly into the battery compartment and there was also a blown compressor fuse. After the exchange, the suspension came back to life. The compressor after the service seems to work quieter (I recommend doing it, dismantling and dismantling the compressor itself is quite simple / intuitive), and as I mentioned earlier, it turned out to be in poor condition, so I probably wouldn't wait too long for its real failure.
I have a question about the dehumidifier (I think it's the tube with "granules inside), is it possible to regenerate it?

Another thing that I took care of were the suspension position sensors (such black "levers" attached to the beam and chassis - please forgive if the nomenclature is not professional and possibly correct it). In recent frosts, a message on the dashboard about the self-leveling error often appeared, the disease disappeared after driving a few kilometers. After removing the sensors, the right one is stable and rotates a bit hard but without resistance, while the left one has play on the arm and turns very freely. My guess is that this slack is responsible for the water / moisture ingress into the sensor which caused the problem after freezing. My question concerns the possibility of dismantling this sensor and possible improvement / repair, has anyone done it? I am asking for any tips.