Pressure/Temperature Graphs
High Side/Ambient Temperature
The 'Normal' condition is that which is relevant to the prevailing ambient temperature.
Probable causes of faults may be found by comparing actual system pressures, registered on your manifold gauge set or recovery/recharge/recycle station.
NOTE: The A/CCM will disengage the compressor clutch should the evaporator temperature fall to 0 °C.
The 'Normal' condition is that which is relevant to the prevailing evaporator temperature.