York S1-025-31812-000 Rollout Switch For technicians troubleshooting a furnace

For technicians troubleshooting a furnace short cycling or ignition failure

this assembly eliminates the need for field-modified piping

As the direct updated replacement for the obsolete 312900 model

For safety and appliance certification

York S1-025-31812-000 Rollout Switch For technicians troubleshooting a furnaceThe York S1 025 31812 000 Rollout Switch is a critical safety component designed for specific furnace burner assemblies where precise thermal monitoring is non negotiable. This 270 degree furnace switch functions as a NC (normally closed) limit that opens when excessive heat is detected outside the combustion chamber, preventing hazardous conditions resulting from flue gas spillage or heat exchanger breaches. As a manual reset rollout switch, it