the blower will run continuously but the burner will not fire

Professional contractors prioritize these limit reset switches for their tight tolerances and compatibility with integrated furnace controllers

such as "Watchguard" lockouts or pressure switch delays

the T174 would be the appropriate 208-277V equivalent

Automation Components Inc (ACI) A/ENT Controller 321142-301 the blower will run continuouslyThe Automation Components Inc (ACI) A ENT is a high precision enthalpy controller engineered to optimize HVAC efficiency by monitoring ambient temperature and humidity. Primarily designed for economizer control and original equipment manufacturers (OEMs), this unit effectively converts capacitive humidity sensor data into a linear 2 wire, 4 to 20 mA output. With a measurement scale spanning 0 to 50 BTUs, the device provides critical input for systems