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Heat Pump Low Pressure Switch. This low pressure switch is designed to use with Hayward HeatPro heat pump models HP20654T HP20654BT HP20854T HP20854BT HP21104T. Shop for HighLow Pressure Switches at Ferguson. Pressure switches are typically installed in heat pumps and air conditioning systems to protect the compressor from a high pressure situation to protect the compressor in a low refrigerant situation and to control the condenser fan cycling. Combination Pressure Switch 3 High Pressure Cut-Off Switch 1 High Pressure Switch 1 ID Pressure Switch Tubing 1 Low Pressure Cut-Off Switch 1 Low Pressure Switch 3 Pressure Switch 34 Pressure Switch Transducer 1 Pressure Switch Tubing 1 View All Filters.
Compressor Will Not Start But Outdoor Fan Runs. The cold weather has caused the R407C to reduce in pressure below the set point of the LP switchsensor. An HVAC pressure switch is a protective device that is installed in both heating and cooling systems. The switch opens on low-pressure drop in the discharge line to shut off the compressor. Pressure switches are typically installed in heat pumps and air conditioning systems to protect the compressor from a high pressure situation to protect the compressor in a low refrigerant situation and to control the condenser fan cycling. The tables below are the lists of possible issues which you may encounter having Goodman heat pump not working.
The switch is an pressure switch located on the discharge line of the compressor.
Compressor motor burned out seized or internal overload open. This is important because in cool mode a dirty air filter caused low airflow on the evaporator. Naturally it is also possible to use special plastic pipes with internal diameters of at least 4 mm for heat pumps or refrigeration plants. Expand All Collapse All. Refrigerant under-charge due to a refrigerant leak or improper charge. Faulty wiring or loose connections in compressor circuit.