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REGULAR DEALER MAINTENANCE
In addition to the type of routine maintenance you might
be willing to perform, your unit should be inspected regu-
larly 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
burners, combustion baffles, heat exchanger, flue col-
lector box, and vent pipe.
2. Inspection of all combustion- and ventilation-air pas-
sages and openings.
3. Close inspection of all gas pipes leading to and inside
your unit.
4. Inspection, and if required, cleaning of the condenser
and evaporator coils.
5. Inspection, and if required, cleaning of the evaporator
drain pan.
6. Inspection, cleaning, and lubrication of blower wheel hous-
ing and motor.
7. Inspection of all supply- and return-air ducts for leaks,
obstructions, and insulation integrity. Any problems found
should be resolved at this time.
8. Inspection of the unit base to ensure that no 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 as-
sure proper connection.
11. Inspection for leaks in the refrigerant circuit. Pressure-
check to determine appropriate refrigerant charge.
12. Operational check of the unit to determine working con-
ditions. Repair or adjustment should be made at this time.
13. Your servicing dealer may offer an economical service
contract that covers seasonal inspections. Ask for fur-
ther details.
Complete Service Instructions can be found in the unit
Installation, Start-Up and Service Instructions literature.
BEFORE YOU CALL FOR SERVICE
CHECK FOR SEVERAL EASILY SOLVED
If insufficient heating or cooling is suspected:
(
) Check for sufficient airflow. Check the air filter for
dirt. Check for blocked return- or supply-air grilles. Be sure
they are open and unobstructed. If these checks do not re-
veal 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 above the indoor temperature during the heat-
ing season, or below the indoor temperature during the cool-
ing season. Be sure the SYSTEM switch in the proper HEAT
or COOL position and not in the OFF position.
(
) Is the electrical supply switch on? Are any fuses blown,
or has the circuit breaker tripped?
(
) During the heating season, check the manual shutoff
valve. Is this lever parallel with the pipe, indicating that the
valve is open? Or is the lever at a right angle, indicating that
the valve is closed? If closed, has the gas been shut off for
safety reasons? Otherwise, you may open the valve and fol-
low the start-up procedures listed in this manual.
NOTE: Before proceeding with the next check, turn off the
electrical power supply to the unit. Remove the control ac-
cess door.
(
) During the heating season, check the control dial on
the gas valve. Is it in the ON position? If it is not, be sure
it has not been turned off for the purpose of safety. If nothing
else seems to be amiss, follow the start-up procedures in this
manual.
(
) 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 TROUBLE
If, after performing the above, unit performance is unsat-
isfactory, shut off the unit and call your dealer.
Dealer's Name.
Telephone No.
Unit Model
Unit Serial Number
7
PROBLEMS
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