If the furnace blower runs continuously while the burners fail to ignite

Is this orifice compatible with both 3/16" and 1/4" pilot tubes

It is not a universal thermocouple

This specific Type 36T model is calibrated to open at 140F on temperature rise and automatically close at 110F

The White-Rodgers 3L09-23 is calibrated to open the circuit at a fixed 170°F and is not adjustable

White-Rodgers 3L09-6 Limit Switch If the furnace blower runsThe White Rodgers 3L09 6 Limit Switch is a professional grade 1 2 inch bimetal disc thermal control engineered for high reliability HVAC high limit protection. This board mounted component features precise open on rise switch action, calibrated to trigger at a 170F fixed open temperature and automatically reset at 130F. Designed with a 3. 12 inch insertion length, it ensures deep penetration into the plenum for accurate air temperature sensing, making