“High superheat, low subcooling” is a condition in a refrigeration system where the superheat (temperature difference between the refrigerant’s saturation temperature and the temperature at the compressor inlet) is significantly higher than normal, while the subcooling (temperature difference between the refrigerant’s temperature at the condenser outlet and the saturation temperature) is lower than normal. This can indicate issues such as refrigerant leaks, undercharging, or restrictions in the system, leading to reduced cooling efficiency and potential damage to the compressor.
