including the Series 26 and 27 modules

If voltage is present but the DPST contacts fail to close

This 3-tube assembly is primarily used in 75

ensure the SPST action matches your specific wiring schematic requirements

A pressure switch stuck open code usually indicates insufficient draft from the inducer

Ranco O16-503 Pressure Control Els PW 17895 including the Series 26 andThe Ranco O16 503 is a heavy duty high pressure cutout control designed for precise system protection in commercial refrigeration and air conditioning applications. As a direct P70JA 18 replacement, this SPDT pressure control features a single pole double throw switch, offering versatility for both safety cutout and alarm signaling. Built with a high visibility scale for accurate field adjustments, it manages a wide operating range from 150 to 450