Lennox 46K67 Control Board Els PW 17895 Always match the OEM limit

Always match the OEM limit switch temperature settings

a reading significantly outside the standard 5k Ohm range at 25°C (77°F) indicates a failed or drifted sensor

air conditioning coil frosting detection

This component is typically designed for direct surface mounting

With UL916 Energy Management and UL864 Fire certifications

Lennox 46K67 Control Board Els PW 17895 Always match the OEM limitThe Lennox 46K67 Defrost Control Board is a critical OEM replacement component engineered for precision management of heat pump defrost cycles. As a veteran technician knows, the Lennox R47181 001 (also marketed under the Armstrong Air 46K67 part number) is essential for maintaining system efficiency by intelligently monitoring temperature sensors and time parameters. This HVAC defrost control module initiates and terminates defrost routines to