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The RCD 0843p-0586 is a supply air temperature sensor designed for use in forced-air HVAC systems. It monitors supply air temperature in the discharge air stream, providing real-time data to the system control board to regulate heating or cooling output. Licensed HVAC technicians install this sensor as an OEM-style replacement when the original unit fails, reads out of range, or causes fault codes on the equipment controller. The compact 1 inch form factor allows it to fit in tight duct or air handler enclosures without modification.
This sensor is suited for residential and light commercial forced-air applications where supply air temperature monitoring is required for proper system operation. It is typically located downstream of the heat exchanger or cooling coil in the supply air plenum or air handler cabinet. Replacement is a common service call when the control board logs temperature-related fault codes or when sensor readings are erratic.
Designed as an OEM-style replacement supply air temperature sensor for forced-air HVAC systems. The raw title references Carrier equipment; however, no specific model numbers or system families were confirmed in the input data, so consult the original equipment documentation to verify fitment before ordering.
Installation should be performed by a licensed HVAC technician. Shut down and lock out the unit at the disconnect before removing the existing sensor or handling any wiring. Verify the replacement sensor connector and lead length are compatible with the existing wiring harness before installation. Follow all applicable local codes and the equipment manufacturer service instructions when reinstalling and restoring power.
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