Icp Heil-Quaker 1086579 Sensor Defrost Demand

The Icp Heil-Quaker 1086579 Sensor Defrost Demand is a sensing component used in heat pump systems to monitor frost accumulation and signal part to the control circuit. It is integrated within outdoor air-conditioning, and heat pump units in residential systems. The sensor detects temperature change on the coil and sends a signal that adjusts the defrost cycle through the control board within HVAC systems. Positioned in the outdoor section, it is placed into the sensing line to ensure accurate cycle timing and coil protection. This process supports stable heating operation and consistent airflow during use.