Specifically designed as an L220-40F limit switch

reducing thermal drift and energy waste

the 0881399 ensures that fouled water is safely diverted to an open receiving vessel or floor drain without the risk of hydraulic backpressure

While these are genuine Lennox parts

the filter has likely collected significant debris and should be replaced to maintain motor cooling and system efficiency

Lennox 79L60 Sensor Lead 318820-201 Specifically designed as an L220-40FAs an experienced HVAC technician, you know that a reliable flame rectification signal is the difference between a smooth running Lennox gas furnace and a frustrating lockout. The Lennox 79L60 Sensor Lead is an essential OEM replacement part designed to transmit the microamp signal from the flame sensor to the ignition control board. This high quality flame sensor wire ensures the circuit remains closed, confirming the presence of a pilot or burner