6
Unit
Panels
After performing any maintenance or service on the unit,be sure all
panels are fastened securely in place to prevent rain from entering
unit cabinet and to prevent disruption of the correct unit airflow pat-
tern.
Combustion Area and Vent
System
For proper and safe operation, the furnace needs air for combustion
and ventilation. The air openings, on the furnace, the air openings
to the area in which the furnace is installed, and the spacing around
the furnace must not be blocked or obstructed.
The combustion area and vent system should be inspected visually
before each heating season. The normal accumulation of dirt, soot,
rust, and scale can result in loss of efficiency and improper perform-
ance if allowed to build up. This inspection should be done by a
trained service person.
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death and/or property damage.
If your unit makes an especially loud noise when the main
burners are ignited, shut down the heating section and call
your dealer.
!
WARNING
BURN HAZARD
Failure to follow this caution may result in personal injury.
Components in heating section may be hot after unit has been
started up. When observing flame, be careful not to get close
to or touch heating components.
!
CAUTION
Regular Dealer Maintenance
In addition to the type of routine maintenance you might be willing
to perform, your unit should be inspected regularly by a properly
trained service technician. An inspection (preferably each year, but
at least every other year) should include the following:
1. Inspection of all flue product passages--including the burn-
ers, heat exchanger, and flue collector box, Mare sure the
burner flames are blue in color and in proper adjustment. Re-
fer to Fig. 10 for burner flame.
2. Inspection of all combustion--and ventilation--air passages
and openings.
3. Closeinspection ofall gaspipesleading to andinside of your
unit.
4. Inspection and, if required, cleaning of the outdoor and
indoor coils.
5. Inspection and, if required, cleaning of the indoor coil con-
densate drain pan.
6. Inspection and cleaning of blowerwheel housing andmotor.
7. Inspection of all supply --air and return--air ducts for leaks,
obstructions, and insulation integrity. Any problems found
should be resolved at this time.
8. Inspection of the unitbaseto ensurethatno cracks, gaps,etc.,
exist which may cause a hazardous condition.
9. Inspection of the unit casing for signs of deterioration.
10. Inspection of all electrical wiring and components to assure
proper connection.
11. Inspection for leaks in the refrigerant circuit. Pressure and
temperature check to determine appropriate refrigerant
charge.
12. Operational check of the unit to determine working
conditions. Repairor adjustmentshould be madeatthistime.
Your servicing dealer may offer an economical service contract that
covers seasonal inspections. Ask for further details.
Complete service instructions can be found in the unit Installation,
Start--u p and Service Instructions.
Warranty Certificate
Your unit has a limited warranty. Be sure to read the warranty care-
fully to determine the coverage for your unit.
Before you call for service...
...check for several easily--solved problems.
If insufficient heating or cooling is suspected:
( ) Check for sufficient airflow. Check the air filter for dirt. Check
for blocked return--air or supply -- air grilles. Be sure they are open
and unobstructed. If these checks do not reveal the cause, call your
servicing dealer .
If your unit is not operating at all, check the following list for
easy solutions:
( ) Check to be sure that your thermostat temperature selector is
set below the indoor temperature during the cooling season or
above the indoor temperature during heating season. Be sure the
SYSTEM switch or MODE contro l is in the COOL or HEAT and
not OFF.
( ) If your unit still fails to operate, call your servicing dealer for
troubleshooting and repairs. Specify the model and serial numbers
of your unit. (Record them in this manual in the space provided.) If
the dealer knows exactly which unit you have, he may be able to
offer suggestions over the phone, or save valuable time through
knowledgeable preparation for the service call.
In Case of T rouble
If you perform the steps above and unit performance is still unsatis-
factory, shut off the unit and call your dealer.
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