Lennox 80W53 Pressure Switch 319825-402 delivering a steady 1725 RPM

delivering a steady 1725 RPM

this controller modulates the fan motor speed based on direct refrigerant pressure

Direct Retrofit Compatibility: Replaces discontinued ADDB-1 and MA-305 series models without the need for additional mounting hardware or wiring modifications

How do I calibrate the T-4506-203 for accurate switchover

While these are high-temp gaskets rated for 300°F

Lennox 80W53 Pressure Switch 319825-402 delivering a steady 1725 RPMThe Lennox 80W53 Pressure Switch is a critical OEM replacement part engineered for high efficiency furnace applications. This single pole single throw (SPST) switch is factory calibrated to a 0. 68" WC (water column) set point, ensuring precise monitoring of the inducer motor's draft. A failure in this component often results in a sequence of operation lockout, as the control board must verify proper venting before allowing gas valve ignition.