Description
The Trane CNT04695 Defrost Control Board manages the cycle within residential and commercial heat pump systems. This component monitors outdoor coil temperatures and compressor run times to determine when frost accumulation necessitates a transition into mode in HVAC sytems. When activated, the board orchestrates the reversal of the refrigerant flow and manages the engagement of auxiliary heat sources to maintain indoor comfort while clearing ice from the exterior fins. This centralized logic board is essential for protecting the outdoor fan motor and ensuring the unit remains functional during freezing ambient conditions.
