Carrier HH18HA279 Defrost Sensor R-410A Common indicators include the furnace

Common indicators include the furnace shutting down before reaching the thermostat setpoint

while the resistive load capacity is rated at 16 Amps

Replacing a cracked or clogged nozzle restores the unit's ability to reach its rated output

Steam units typically require a different sensing delay and reset configuration

Broad Compatibility: Fits a wide range of Carrier

Carrier HH18HA279 Defrost Sensor R-410A Common indicators include the furnaceWhen you're out on a service call for a heat pump that is "iced up" or failing to initiate a defrost cycle, the Carrier HH18HA279 Defrost Sensor is often your primary point of failure. This OEM temperature activation switch is specifically calibrated to a 65 33 degree range, naturally closing at approximately 32F to signal the Carrier defrost control board and opening at 65F to terminate the cycle. Engineered for heavy duty heat pump maintenance, it