York S1-025-27747-011 Rollout Switch Els PW 17895 Harness failure often indicates systemic

Harness failure often indicates systemic insulation degradation

Key Benefits Direct OEM Compatibility: Specifically designed for Barber Colman TK-1001 through TK-1601 series pneumatic thermostats

the drier should be replaced to prevent flashing

while the 4-way flexing action inherently handles angular and parallel misalignment

meaning it is already machined to 1/2 inch

York S1-025-27747-011 Rollout Switch Els PW 17895 Harness failure often indicates systemicThe York S1 025 27747 011 Rollout Switch is a critical OEM replacement part designed for high performance gas furnace safety. Engineered to trigger at a 250 degree Fahrenheit open temperature, this manual reset rollout switch serves as a final line of defense against dangerous flame rollout conditions. When the internal sensor detects excessive ambient heat near the burner boxoften caused by a cracked heat exchanger, blocked flue, or insufficient