Lennox · EL18KSLV Series Outdoor Units
The DC fan motor is damaged, not connected, or the related circuit is broken. The error will lock if it occurs 4 times within 60 minutes.
Click steps to track your progress.
Check if the fan motor wires are conductive and if the motor is running.
Power off the unit and try rotating the fan motor by hand to see if it turns freely.
Verify the terminal voltage is correct.
Replace the fan motor if it's not operating correctly.
Replace the PCB if the motor is functional but the error persists.