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.
As pressure in the tank approaches 40 psi, the pump switches on, refilling water in the tank and restoring the air pressure. When the air is compressed to about 60 psi, the pump turns off. This operation allows the homeâs water flow to remain almost constant, as the 20 psi pressure change is rarely noticeable.