If your unit fires but immediately trips on a freezestat error during cold starts

For models with an integrated access port

this motor prevents pressure switch faults and ensures the safety and efficiency of the heat exchanger cycle

which may eventually lead to motor failure or pressure switch trips

Honeywell CS-NO-F-50A Switch 319848-301 If your unit fires butThe Honeywell CS NO F 50A Switch is a high performance split core current sensor engineered for precise status monitoring in commercial HVACR and building automation systems. Designed as the direct replacement for H 800, this normally open (N O) current switch features a versatile sensing range of 0. 35A to 200A. The split core architecture allows for rapid retrofitting on existing conductors without breaking the circuit, significantly reducing labor