this OEM York pressure switch serves as a critical safety limit

Professional-grade heating systems require high-response ignition to prevent delayed ignition cycles

typically used by technicians to signal the control board or engage secondary components like crankcase heaters

Key Benefits Precise Flame Sensing: Maintains accurate millivolt signal feedback to the control board to prevent false system shutdowns

ambient temperature sensor failure codes

Dwyer Instruments 1823-0 Pressure Switch 318820-201 this OEM York pressure switchThe Dwyer Instruments 1823 0 Pressure Switch is a compact, high performance differential pressure switch designed for reliable monitoring of air and non combustible gases in industrial HVACR systems. Built for veteran technicians who demand precision in low pressure applications, this 1800 Series unit features an adjustable set point range of 0. 15" w. c. to 0. 5" w. c. with a tight 0. 06" approximate deadband. The 1823 0 utilizes a vertically mounted