York S1-2985-3181 Limit Switch preventing the short-cycling and blower

preventing the short-cycling and blower run-on issues common with aged or fouled sensors

and York equipment

Whether you are performing a routine startup or complex troubleshooting

Never decrease the voltage rating

York S1-2985-3181 Limit Switch preventing the short-cycling and blowerThe York S1 2985 3181 Limit Switch is a critical OEM safety component designed for high limit protection in residential and light commercial furnace applications. This 160 190F Auto Limit Switch features a primary safety circuit that opens when the internal plenum temperature reaches its 190F trip point, effectively de energizing the gas valve or heating elements to prevent heat exchanger damage or hazardous overheating. As an automatic reset limit