This water pressure switch acts as a safety interlock

This component is essential for resolving common "overlimit" fault codes on the control board

5 screw terminals are designed to accommodate up to 2 x 2

maintaining elastic memory under cycling pressures

Lennox 31J35 Pilot Assembly Els PW 17895 This water pressure switch actsThe Lennox 31J35 Pilot Assembly is a factory authorized OEM replacement part engineered specifically for residential and light commercial gas furnaces, including the G20 series and G20R models. As a critical intermittent pilot ignition component, this assembly replaces previous part numbers 31J3501 and NCO 31J35, ensuring seamless mechanical compatibility with your existing gas burner configuration. This Lennox 620 pilot assembly features a factory