Hello, I know this topic has been dealt with several times, but I can’t get any further. It’s a Lupo Bj 2000 Now to the problem: The manual air conditioning brings all 24h for about 20-30 sec cold air and that was it with cold. When I bought the car the climate didn’t work at all. So I started to read in the forum to work out possible sources of error gradually. In the following order:1. Climate was filled There were still 395gr in the system so it was dense but did not cool and the fan didn’t run when it switched on. So filling out and not paid for anything at all. 2. Pressure switch (sensor) itself changed and refilled (for the filling 60€ moaned) see since the fan runs the system cools but only briefly and then no more3. All fuses checked all ok4. Temperature sensor in the water box so checked and then it starts with my non-experts. I pulled it off and started the climate. It’s all running on fan and magnetic coupling I’ve connected it all the same thing. If I’ve just mentioned it all over the air bridge.