July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Thermo Switch

The thermo switch switches off the compressor when the material temperature exceeds 135°C. It switches on again when the temperature is below 120°C. It switches off to prevent the compressor seizing.

Normally this material temperature occurs only in the following combination of circumstances:

Low refrigerant level.
The vehicle speed is > 70 km/h.
The outside temperature is > 30-35°C.