The internal SPST command relay and the current status switch operate independently

preventing the initial "cold blast" of air

a rollout switch must be a manual reset type to ensure the system is inspected by a professional before being restarted after a high-heat event

Industrial Durability: Rugged high-quality plastic housing offers resistance to chemicals

Multi-System Application: Approved for use in Trane heat pumps

Trane CNT4368 Control Board Els PW 17895 The internal SPST command relayFor field techs managing freeze up issues on residential heat pumps, the Trane CNT4368 Defrost Control Board is the current OEM standard for maintaining system efficiency during low ambient operation. As a direct Trane CNT1129 replacement board, this microprocessor based control manages the critical timing and temperature parameters required to clear frost from the outdoor coil. It effectively supersedes older iterations including CNT1050, CNT1510,