49
Troubleshooting Chart
Symptom
LED Status
Fault Description
Corrective Actions
Furnace fails to operate
EED
Aux limit switch open (blower
compartment)
Check filters and ductwork for blockage, clean
filters or remove obstruction
Check circulator blower speed and performance,
correct speed or replace blower motor if
necessary
Tighten or correct wiring connection
Furnace fails to operate
EEF
Aux switch (condensate switch)
open
Check evaporator drain pan, trap, piping