York S1-025-26339-001 Limit Switch the York S1-025-31814-000 Limit Switch

the York S1-025-31814-000 Limit Switch is a critical safety component designed to maintain peak system integrity

these part numbers are technically identical and serve as direct replacements for one another in all Lennox terminal and control applications

For technicians performing annual maintenance or a combustion chamber repair

providing an extra safety margin compared to 370V versions

York S1-025-26339-001 Limit Switch the York S1-025-31814-000 Limit SwitchThe York S1 025 26339 001 Limit Switch is a primary safety component engineered for precise thermal monitoring in residential and light commercial forced air systems. This 100 250F auto limit switch features an automatic reset mechanism, designed to break the 24V control circuit if the heat exchanger plenum exceeds the calibrated 250F threshold. As a critical furnace high limit sensor, it prevents thermal stress and potential heat exchanger cracks by