or a malfunctioning fan belt

When failures in the heating cycle occur

High-Grade Construction: Corrosion-resistant spring material designed to withstand the chemical properties of LP additives

the link separates

How do I verify if the S1-025-38951-000 is the correct ignitor for my furnace

Lennox 93J54 Temperature Sensor or a malfunctioning fan beltThe Lennox 93J54 Temperature Sensor is a critical OEM 10k Ohm thermistor designed for precision ambient air monitoring in high performance HVACR systems. As a genuine Lennox 93J5401 replacement part, this sensor provides the control board with real time analog voltage data to manage heating and cooling cycles, ensuring the unit operates within its engineered thermal parameters. Measuring roughly 3. 45" x 4. 15", this Lennox ambient temperature sensor