York S1-025-41313-000 Rollout Switch serving as the primary defense

serving as the primary defense against heat exchanger failure and overheating

This indoor ambient thermistor is typically mounted on the front of the evaporator coil to measure the return air temperature before it passes through the cooling or heating stages

Common Questions: When should a furnace limit switch be replaced

What causes this fusible link to fail

This gasket is compatible with specific Lochinvar Knight models

York S1-025-41313-000 Rollout Switch serving as the primary defenseThe York S1 025 41313 000 Rollout Switch is a critical safety component designed for precise thermal monitoring within York furnace gas burner assemblies. This Single Pole Single Throw (SPST) flame rollout sensor is engineered to interrupt the heating circuit when it detects excessive temperatures, preventing hazardous conditions resulting from a cracked heat exchanger or blocked flue. With a 290 degree F open temperature and a 210 degree F close