Before replacing, try cleaning the sensor rod with fine steel wool or a dollar bill. That fixes it about half the time. If it still shuts off after 3–5 seconds, replace it.
S1-02527773700 – FLAME SENSOR (YORK, AFTERMARKET, DIRECT, FLS700)
$23.44
York flame sensor replacement (S1-02527773700). Aftermarket direct fit with 4-inch probe and Kanthal rod. Fits York, Coleman, and Luxaire furnaces.
Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm | In-Store Pickup Only
Description
If your furnace lights but shuts off after a few seconds, a dirty or failed flame sensor is the most likely cause. This aftermarket sensor directly replaces the York S1-02527773700, with a 4-inch probe and alumina ceramic insulator.
Specs: 4-inch probe, Kanthal flame rod, alumina ceramic insulator, direct York replacement
Replaces: FLS700, FLS0700, S1-025-27773-700, S1-02527773700, 1380687
Fits: York, Coleman, and Luxaire gas furnaces
Need help? See our Furnace Not Heating Guide.
In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.
