Lennox 22K51 Control Board R-22 high-pitched whistling (air bypass)

high-pitched whistling (air bypass)

Engineered with a dual SCR output and a direct bond copper substrate

8" WC threshold from being met

protecting the compressor from liquid slugging while maximizing HVAC system efficiency and dehumidification capacity

as well as industrial control panels requiring a compact yet robust electromechanical relay

Lennox 22K51 Control Board R-22 high-pitched whistling (air bypass)The Lennox 22K51 Ignition Control Board (OEM 607308 22) is a critical integrated furnace control designed for high performance service in select Lennox communicating enabled gas units. Engineered to interface with SL280UHV, SL280DFV, EL296UHV, and EL296DFV heating systems, this 120V furnace ignition module ensures precise hot surface ignitor timing and reliable flame sensing. This board replaces legacy 107045 XX series controls, providing a stable