While the S1-025-29041-005 may be faulty

Always verify your system’s depth and static pressure needs before substituting parts

The Nordyne 663582R Distributor Assy is a critical OEM refrigerant distributor engineered for high-performance HVAC system applications

this differential pressure switch acts as a primary safety mechanism to verify proper combustion airflow before allowing the ignition sequence to proceed

the internal disc has likely failed and requires replacement

Fireye 72DUV1 Amplifier 323269-701 While the S1-025-29041-005 may beThe Fireye 72DUV1 Ultraviolet Amplifier is a field proven, solid state plug in module designed for Series D burner management controls. Engineered for high demand industrial environments, this UV flame amplifier processes signals from non self checking ultraviolet scanners, including the Fireye UV1A3, UV2, and 45UV3 series. By converting the UV radiation from a flame into a consistent DC voltage, the 72DUV1 ensures that your flame safeguard system