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.
52W29 – FLAME SENSOR (LENNOX, AFTERMARKET, DIRECT, FLS52W29)
$23.18
Lennox 52W29 flame sensor kit with straight probe. Aftermarket direct replacement for Lennox furnaces. Also listed as FLS52W29.
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. The 52W29 kit includes a straight-probe flame sensor that drops right into Lennox furnaces as a direct replacement.
Specs: Straight probe design, ceramic insulator, kit includes sensor and hardware
Replaces: 52W29, FLS52W29
Fits: Lennox 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.
