Carrier KGAPN3901ALL Conversion Kit 30067439-890 or the furnace control board

or the furnace control board flashing a "pressure switch stuck open" or "stuck closed" fault code

Designed strictly for air service

and HVACR pressure monitoring applications

fitting seamlessly into tankless water heater or storage tank setups requiring CSA certified performance up to 250°F

Carrier KGAPN3901ALL Conversion Kit 30067439-890 or the furnace control boardThe Carrier KGAPN3901ALL is a critical LP to natural gas conversion kit designed for high efficiency Carrier, Bryant, and Payne furnaces. This genuine OEM conversion kit allows for a seamless transition from liquid propane to natural gas, ensuring your equipment maintains proper manifold pressure and thermal output. This comprehensive kit is compatible with fixed speed, two stage, and variable speed condensing furnaces, including popular models like