Condenser Fan
Do not poke sticks, screwdrivers, or any other object
into revolving fan blades. Severe bodily injury may
result.
The fan must be kept free of all obstructions to ensure
proper cooling. Contact your dealer for any required service.
Electrical Controls and Wiring — Electrical con-
trols are difficult to check without proper instrumentation;
therefore, if there are any discrepancies in the operating cycle,
contact your dealer and request service.
Integrated Gas Controller (IGC) — The IGC board
incorporates an LED that emits a flashing light to indicate an
alarm code. If the furnace section will not operate and the
LED is flashing a code (2 to 8 flashes in succession), contact
your dealer and request service. See Fig. 1.
Refrigerant Circuit — The refrigerant circuit is diffi-
cult to check for leaks without the proper equipment; there-
fore, if inadequate cooling is suspected, contact your dealer
for service.
Combustion Area and Vent System — The com-
bustion area and vent system should be visually inspected
before each heating season. The normal accumulation of dirt,
soot, rust, and scale can result in loss of efficiency and im-
proper performance if allowed to build up.
If your unit makes an especially loud noise when the
main burners are ignited, shut down the heating section
and call your dealer.
See Fig. 1 and proceed as follows to inspect the combus-
tion area and power-venting system of your unit.
1. Turn off electrical power and gas supply to your unit.
2. Remove burner compartment access panel.
3. Using a flashlight, carefully inspect the burner areas for
dirt, soot, or scale.
If dirt, soot, rust, or scale accumulations are found,
call your dealer and do not operate your heating
section.
4. When you have completed your inspection, follow the
start-up procedures in this manual to restore your unit to
operation.
5. Observe unit heating operation, and watch the burner flame
with the access panel removed, to see if it is bright blue.
If you observe a suspected malfunction, or that the burner
flames are not bright blue, call your dealer. See Fig. 5.
Some yellow flame may be present due to the panel be-
ing removed.
6. Replace burner compartment access panel.
Unit Panels — After performing any maintenance or serv-
ice on the unit, be sure all panels are securely fastened in
place to prevent rain from entering unit cabinet and to pre-
vent disruption of the correct unit airflow pattern.
Fig. 5 — Proper Flame Appearance
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