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 (pref-
erably each year, but at least every other year) should in-
clude 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
housing and motor.
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 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
assure 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 serv-
ice contract that covers seasonal inspections. Ask for
further details.
Complete Service Instructions can be found in the unit
Installation, Start-Up and Service Instructions.
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- 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 se-
lector is set above the indoor temperature during the heating
season, or below the indoor temperature during the cooling
season. Be sure the SYSTEM switch is 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 shutoffvalve.
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 follow the
start-up procedures listed in this manual.
NOTE: Before proceeding with the next check, turn off gas
supply to unit and then turn off the electrical power supply
to the unit. Remove the control access door/panel.
( ) 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 safety reasons. 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 unsatis-
factory, shut off the unit and call your dealer.
Dealer’s Name
Telephone
Unit Model
Unit Serial Number
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