Lennox 51W92 Pressure Switch or the control board flashing

or the control board flashing a specific sensor-related fault code

Key Benefits: OEM Precision: Guaranteed compatibility with York and Johnson Controls 14 SEER YCS microchannel units

Key Benefits OEM Precision: Guaranteed 110°F close/90°F open thresholds for optimized blower cycling and energy efficiency

7 kW for R134a

Lennox 51W92 Pressure Switch or the control board flashingWhen you're dealing with a Lennox furnace that won't cycle past the inducer stage, the Lennox 51W92 Pressure Switch is the primary diagnostic point for proving draft. This genuine OEM Lennox 51W92 is a single pole, single throw (SPST) normally open switch calibrated to close at 1. 00" WC. Engineering wise, this component is critical for 80% and 90% AFUE mid to high efficiency gas furnaces, ensuring that the combustion blower is moving enough air to