Lennox 10H67 Control Module R-407C The "blank" position indicates a

The "blank" position indicates a frost protection setting of approximately 45°F

Can I use an aftermarket L200-20F switch instead

the mounting geometry and BTU rating (760-687 range) of this specific York part are required to prevent delayed ignition "booms

while a lower rating could allow the furnace to run in a dangerous

Designed specifically for R22

Lennox 10H67 Control Module R-407C The "blank" position indicates aThe Lennox 10H67 is a critical HVAC control module designed for high performance management of blower motors and ignition sequences in residential and commercial units. As a veteran grade OEM Lennox replacement part, this module serves as the primary interface for regulating airflow and temperature adjustments across specialized Lennox furnace models, including the GHR32 and GHR34 series. It functions as the system's electronic brain, facilitating