A common failure point is the internal conductor of the lead wire

Direct Replacement: Precise fitment for the ASCO 318-247 eliminates the need for field modifications or hardware adjustments

Industry Standards: Class 2 safety rating ensures current limiting protection for the low-voltage side of the circuit

making it ideal for bypass or mixing applications where precise thermal control is required

protecting the compressor from premature failure due to rapid power interruptions or thermostat fluctuations

Reznor 193810 Switch 30067439-890 A common failure point isThe Reznor 193810 is a heavy duty air proving switch pre mounted in a protective enclosure, engineered specifically for Reznor HVAC systems. Designed for reliability in demanding commercial and industrial environments, this differential pressure switch acts as a primary safety mechanism to verify proper combustion airflow before allowing the ignition sequence to proceed. It serves as a direct OEM replacement for legacy part numbers including Reznor