12
8. Remove funnel and tube from inducer housing and replace drain connection cap and clamp.
9. Replace main furnace door. (See Fig. 29.)
10. Propylene glycol need not be removed before restarting furnace.
34
35
A CHECK-UP CHECKLIST
Your furnace represents an important investment in your family’s comfort and your home’s value. To keep it performing properly
and to prevent future problems, have a trained service specialist give your furnace a professional check-up annually. The following
checklist can be used as a guideline to proper service:
• Inspect all
fl
ue gas passages, burners, heat exchangers, coupling box(es), and inducer assembly.
• Inspect all combustion-air and vent piping inside structure and pipe terminations outside the structure.
• Check gas pipes leading to and inside of your furnace for leaks.
• Inspect and clean the blower motor and wheel.
NOTE:
The inducer and blower motors are pre-lubricated and require no additional lubrication. These motors can be identi
fi
ed by
the absence of oil ports on each end of the motor.
• Inspect and change or clean air
fi
lter(s) if necessary.
• Inspect all supply- and return-air ducts for obstructions, air leaks, and insulation. Remedy any problem when necessary.
• Inspect the return-air duct connection(s) at the furnace to ensure it is physically sound, sealed to the furnace casing, and terminates
outside the space containing the furnace.
• Inspect electrical wiring, connections, and components for loose connections.
• Perform an operational checkout to determine whether your furnace is working properly and if it requires adjustments.
• Inspect all condensate drain tubes and condensate trap assembly for leaks. The condensate removal system should be cleaned
annually by a quali
fi
ed service agency. Refer to the Service and Maintenance Instructions Guide for further information.
• Examine the physical support of the furnace. Support should be sound with no cracks, sagging, gaps, etc. around the base.
• Check furnace for any obvious signs of deterioration.
BEFORE YOU REQUEST A SERVICE CALL
If your furnace is not operating or not performing properly, you may save the expense of a service call by checking a few things
yourself before calling for service.
NOTE:
Record the LED status code BEFORE removing the blower access door or turning off 115-v power to the furnace. Removing
the blower access door or turning off the 115-v power will end the LED status code display and erase the code from the control’s
memory.
FOR INSUFFICIENT AIRFLOW:
• Check for dirty air
fi
lter(s).
• Check for blocked return-air or supply-air grilles throughout your home. Ensure they are open and unobstructed.
If problem still exists, call your dealer for service.
