Durable steel construction maintains tension under continuous thermal cycles

ensuring the rated torque is fully transferred to the valve ball

or a failing blower motor capacitor before assuming the switch itself is defective

a 440V rated capacitor is a suitable upgrade as it offers a higher insulation breakdown threshold

As a veteran contractor knows

Trane THT2437 Limit Switch Durable steel construction maintains tensionThe Trane THT2437 Limit Switch is a high precision, OEM furnace safety control designed to maintain thermal integrity within Trane and American Standard heating systems. This automatic reset limit switch operates as a critical safety thermostat, featuring a calibrated 190F open temperature to interrupt the burner circuit during over temperature conditions and a 160F close temperature for system re engagement. Engineered with 7 inches of insulation,