The manufacturer updated the part number

If calibration drift occurs

When diagnosing intermittent ignition or pressure switch lockout codes

Quiet Operation: Precision-balanced internals reduce vibration and noise during startup and high-speed cycles

triggering the gas valve to maintain high-recovery performance

Carrier LH31RB015 Mini Pilot 318172-701 The manufacturer updated the partThe Carrier LH31RB015 Mini Pilot is a precision engineered OEM replacement pilot burner designed for high performance gas furnaces. As a veteran grade furnace ignition component, this assembly is strictly built to maintain a consistent pilot flame, ensuring the clean and reliable activation of the main burner during every heating cycle. This factory authorized part is cross compatible, supporting both Natural Gas and Liquid Propane (LP) systems, which