Lennox 34M76 Pressure Switch The York S1-025-19499-001 Temp Control

The York S1-025-19499-001 Temp Control is a critical fixed-setting HVAC limit switch designed for precision thermal management in commercial air conditioning and heating units

The manual reset feature is essential for diagnostic purposes

the bimetal disc triggers a circuit break to prevent heat exchanger fracturing or component damage

dirty evaporator coil

The Nordyne 626350R Roll-Out Switch is a critical SPST safety component designed for gas furnace flame rollout protection

Lennox 34M76 Pressure Switch The York S1-025-19499-001 Temp ControlThe Lennox 34M76 Pressure Switch is a critical safety component designed for high efficiency condensing gas furnaces. Engineered with an actuation set point of . 86" WC (Water Column) and a reset point of 1. 01" WC, this Single Pole Single Throw (SPST) switch ensures the inducer motor establishes a proper vacuum before the ignition sequence begins. Designed for a 1 4" barb connection, it provides a reliable pneumatic seal to prevent the furnace from