| 摘要 |
In a heating and air conditioning installation for a motor vehicle, the refrigerant fluid circuit includes a cooling (air conditioning) loop including a condenser, and a heating loop. In order to detect excess pressure in the refrigerant fluid in the condenser, during corrective discharges of the fluid to the condenser from the heating loop, the frequency of occurrence of these discharges is monitored continuously, and an evaluation is made as to whether the measured frequency exceeds a threshold value. The outlet pressure of the compressor is also monitored continuously, an evaluation being made as to whether the measured pressure exceeds a predetermined demand pressure by an excess value over a given period of time.
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