Try cleaning the sensor with fine steel wool before replacing. That fixes it about half the time.
FSC10 – FLAME SENSOR CLEANER
$18.44
Supco FSC10 flame sensor cleaner. Compact, durable tool cleans flame sensor rods in seconds. Fixes the most common cause of furnace short-cycling.
Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm | In-Store Pickup Only
Description
Dedicated flame sensor cleaning tool that scrubs the oxide buildup off furnace flame sensor rods. A dirty flame sensor is the #1 reason a furnace lights then shuts off after a few seconds. This tool cleans the rod without removing it from the furnace bracket — much easier than sandpaper or steel wool.
Specs: Compact design, abrasive cleaning tip, by Supco
Replaces: FSC10
Fits: Standard flame sensor rods in all major furnace brands
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.
