Carrier 38CQ660029 Defrost Relay 321894-708 making it a critical component

making it a critical component for restoring original airflow specs in Bryant Payne motors

minimizing pressure drops and preventing air leaks within the distribution manifold

Rugged Design: Built to handle the electrical noise and thermal stress common in HVACR applications

0-125 PSI) or lack the gauge ports

this kit is specifically calibrated and listed for use with Reznor heating equipment

Carrier 38CQ660029 Defrost Relay 321894-708 making it a critical componentThe Carrier 38CQ660029 Defrost Relay is a specialized HVAC defrost control board designed for heat pump systems requiring precise field selectable timing. This genuine OEM replacement part manages the transition between heating and defrost modes by monitoring the defrost thermostat and cumulative compressor run time. Engineered for 208 240V configurations, the board supports a 10A current capacity and features adjustable intervals of 30, 45, or 90