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The TR20VA001 features inherently limited overcurrent protection
A reading showing infinite resistance or an "OL" display indicates a cracked element or internal break
operating a furnace without a functional high limit safety switch is a fire hazard
s appearance while securing temperature set points
this replacement orifice offers superior resistance to erosion and chemical wear
Lennox 24L26 Limit Switch The TR20VA001 features inherently limitedThe Lennox 24L26 Limit Switch is a critical OEM furnace safety control engineered for high static environments and precise thermal monitoring. This automatic reset limit switch is designed to protect the heat exchanger and blower assembly from thermal runaway by interrupting the burner circuit when temperatures reach the 200F high limit trip point. Once the plenum cools to the 160F reset temperature, the switch automatically closes to resume normal