As we discuss in this brief, the administrationâs reports to the court do not preclude the Legislature from assessing the measures identified by the administration and considering its own strategy for compliance with the court ruling based on its priorities.
The two most common causes of low head pressure at an air conditioner or heat pump compressor motor are: 1  Refrigerant under-charge, due to a refrigerant leak or improper charge.  TXV (TEV) malfunction, over-metering refrigerant.
In the process, the temperature of the high pressure refrigerant drops to a point where it condenses back into a liquid. Thus, the refrigerant enters the condenser as a high-pressure, high-temperature gas, and leaves in liquid form cooler (typically 80 to 125 F), but still under high pressure.