this is a main burner appliance regulator

Wrap the thermal tape tightly to ensure zero air gaps between the sensor bulb and the substrate for the most accurate HVAC temperature diagnostics

Drop-in Compatibility: Optimized as the official furnace parts replacement for model 626615

the compressor failing to kick on

Copeland 971-0329-16 Protector Kit L99H008 this is a main burnerProper compressor protection is non negotiable for system longevity, and the Copeland 971 0329 16 Protector Kit is the industry standard for safeguarding HVAC compressors against electrical failure. This OEM certified compressor motor protector is engineered to monitor and regulate voltage conditions, specifically designed for use with condensing units like the F9AM 0101 CAV 110. It operates on a 120V power supply and features a 1 4 inch dimensional