A 3-flash code typically indicates a pressure switch stuck open

They are the same OEM component and are fully interchangeable in all supported Lennox applications

Works on all types of round copper

The 440V rating indicates the maximum dielectric strength

When used with plenum-rated M9208-GGA-2 actuators

Reznor 201158 Pressure Switch Els PW 17895 A 3-flash code typically indicatesThe Reznor 201158 Pressure Switch is a critical safety component designed for precise combustion air monitoring in high capacity gas fired unit heaters. Engineered for a setpoint of 1. 10" WC, this SPST (Single Pole Single Throw) vacuum switch verifies that the inducer motor is moving sufficient air to ensure safe venting and combustion before the ignition sequence initiates. This specific model features dual 1 4" barb connections, allowing for