VW Golf 4 1.9TDI AXR 2001 - Air conditioning does not work

Hello, I have a problem with the air conditioning in the Golf 4 - the manual air conditioning lights up after pressing ac, but the air conditioning and fans do not work. The air conditioning works for a short time, I bridged the pressure sensor, changed the fan module and then nothing, the temperature is good. Someone will help, I do not know where to look for the problem or I have to check the installation piece by piece ...

The positive temperature is shown as it is in the yard

Got a VCDS?
As in the engine measuring blocks, you can check the air conditioning status.