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TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or the classified section of your local telephone directory under the
“Heating Equipment’’ or “Air Conditioning Contractors & Systems’’ heading for dealer listing by brand name.
Have available the Model No., Series Letter, & Serial No. of your equipment to ensure correct replacement part.
Carrier Corporation Indianapolis, IN 46231
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations
.
Copyright 2004 Carrier Corporation Form: OM58-116 Replaces: New Printed in the U.S.A. a 12-04 PC 101 Catalog No. 535-80151
• Inspect the return-air duct connections 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 compo-
nents for loose connections.
• 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.
FOR INSUFFICIENT AIRFLOW:
• Check for dirty air filters.
• 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.
IF FURNACE FAILS TO OPERATE:
Follow this checklist step by step, advancing to the next
step only if furnace fails to start.
• Check thermostat for proper temperature. Is thermo-
stat set above room temperature?
• Is thermostat set on HEAT?
• Check fuses and circuit breakers. Is electrical supply
on?
• Is valve in oil supply pipe in open position?
• Is the ignition control on the burner not in lockout? The
red button on top of the control must be depressed for 3
sec in order to reset the control.
• Check for obstructions around the vent termination.
If the furnace still fails to operate, call your service rep-
resentative. For your convenience, record the furnace
product and serial numbers on page 2. Should you ever
require service, you will have ready access to the infor-
mation needed by your service representative.