6
Condenser Fan
The fan must be kept free of all obstructions to ensure prop-
er cooling. Contact your dealer for any required service.
Electrical Controls and Wiring —
Electrical controls
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 (1 to 9 flashes in succession), contact your
dealer and request service. See Fig. 1.
Refrigerant Circuits —
The refrigerant circuits are dif-
ficult 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 be-
fore each heating season. The normal accumulation of dirt,
soot, rust, and scale can result in loss of efficiency and improp-
er performance if allowed to build up.
See Fig. 1 and proceed as follows to inspect the combustion
area and power-venting system of your unit.
1. Turn off electrical power (install disconnect tag) 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.
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 pan-
el being removed.
6. Replace burner compartment access panel.
Unit Panels —
After performing any maintenance or
service on the unit, be sure all panels are securely fastened in
place to prevent rain from entering unit cabinet and to prevent
disruption of the correct unit airflow pattern.
Do not poke sticks, screwdrivers, or any other object into
revolving fan blades. Severe bodily injury may result.
If your unit makes an especially loud noise when the main
burners are ignited, shut down the heating section and call
your dealer.
If dirt, soot, rust or scale accumulations are found, call your
dealer and do not operate your heating section.
Fig. 5 — Proper Flame Appearance
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