utilizing the 8402-093BX thermal cutoff 110C ensures that the control circuit is protected against overheating faults typically caused by blower failure or restricted airflow

Replacing the defective HVAC thermistor with this OEM part typically resolves sensor-related fault codes

An open circuit indicates a failed coil that requires immediate replacement

ensuring exact fitment for specific air handler models

Robertshaw 41-404 Hot Surface Ignitor utilizing the 8402-093BX thermal cutoffThe Robertshaw 41 404 Hot Surface Ignitor is a service ready, high purity recrystallized silicon carbide furnace ignitor engineered for rapid thermal response in residential and light commercial heating applications. This Norton 271M replacement features a Style C ceramic block and is factory rated to reach HSL ignition temperatures within 17 seconds at 120V AC. Designed for maximum conductivity, the unit includes 18 gauge nickel chrome lead wires