Install Instructions
48
T
ROUBLESHOOTING
C
HART
Symptom LED Status Fault Description Corrective Actions
Furnace fails to operate
Aux limit switch open (blower
compartment)
Check filters and ductwork f or blockage, clean f ilters 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
Aux switch (condensate switch) open Check evaporator drain pan, trap, piping