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HEATING CYCLE
If you own a packaged air conditioner that includes electric
heat as an accessory, you need only program your thermostat
for heating.
With the SYSTEM switch of your indoor thermostat set to
the HEAT position, the heating section of your home comfort
system will operate until room temperature is raised to the
level you have selected. Of course, the heating unit will have
to operate for longer periods to maintain a comfortable envi-
ronment on colder days and nights than on moderate ones.
PERFORMING ROUTINE MAINTENANCE
With the proper maintenance and care, your air conditioner
will operate economically and dependably. Maintenance can
be accomplished easily by referring to the following direc-
tions. However, before performing maintenance, consider these
important safety precautions:
• DISCONNECT ALL ELECTRICAL POWER TO THE AIR
CONDITIONER BEFORE REMOVINGACCESS PANELS TO
PERFORM SERVICE OR MAINTENANCE. For a packaged
air conditioner unit, disconnect power to the unit and any
supplemental electric heaters.
NOTE: THERE MAY BE MORE THAN ONE ELECTRICAL
DISCONNECT SWITCH.
• ALTHOUGH SPECIAL CARE HAS BEEN TAKEN TO
MINIMIZE SHARP EDGES IN THE CONSTRUCTION OF
YOUR UNIT, BE EXTREMELY CAREFUL WHEN HAN-
DLING PARTS OR REACHING INTO THE UNIT.
CHECK THE AIR FILTER
A dirty air filter will cause excessive strain on the compres-
sor and blower motor. This can cause the components to over-
heat and automatically shut down. In the extreme, the com-
ponents will fail and need to be replaced. To avoid inefficient
or failed operation of your unit, CHECK THE FILTER(S) EV-
ERY 3 TO 4 WEEKS. Replace filter(s) when necessary, or clean
the filter(s) if you have the reusable type.
Disposable filters should be replaced by similar, new filters
of the same dimensions.
Reusable, permanent filters should be washed in a solution
of cold water and mild detergent, then rinsed and thoroughly
dried. THE FILTER MUST BE COMPLETELY DRY BE-
FORE BEING REINSTALLED. To avoid prolonged shut-
down of your unit while a filter is drying, you should have an
extra filter on hand. This would allow you to rotate between
the two with minimal downtime for your comfort system. Ex-
tra filters may be purchased from your dealer.
PACKAGED SYSTEM: The filter(s) and filter rack for a pack-
aged system are supplied and installed by the contractor or
dealer. Typically, the filter(s)and rack are located inthe return-
air duct in the unit or behind the return-air grille(s). Have
your dealer show you the location of your filter(s) and the pro-
cedures for removal and replacement.
If you have any questions about the removal and/or cleaning
of your filter(s), contact your dealer for assistance.
If grass clippings, leaves, shrubbery, and debris are kept away
from the unit, minimal care should be sufficient to keep the
system functioning properly. However, if the outdoor coil be-
comes dirty, use a brush or vacuum cleaner and soft brush
attachment to clean the exterior surface. If dirt is deep in the
coil, contact your dealer for service. The outdoor fan motor
may have to be disconnected and the top panel removed to
gain access to the coil for thorough cleaning. Do not attempt
this yourself.
UNIT SUPPORT
Your packaged unit should be maintained at a level position.
If its support should shift or settle so that the unit is no longer
level, you should correct the condition. Relevel it promptly to
assure condensate drainage out of the unit. If you notice that
water or ice collectsbeneath the unit,arrange for itto bedrained
away from the unit.
BEFORE YOU REQUEST A ‘‘SERVICE CALL’’
BEFORE YOU CALL FOR SERVICE, CHECK FOR THESE
EASILY SOLVED PROBLEMS:
• Check the indoor and outdoor disconnect switches. Verify
that circuit breakers are ON or that fuses have not blown.
• Check for sufficient airflow. Check the air filter(s) for any
accumulations of dirt. Check for blocked return-air or supply-
air grilles. Be sure grilles are open and unobstructed.
• Check the settings on your indoor thermostat. If you de-
sire cooling, see that the temperature control selector is set
below room temperature and the SYSTEM switch is on the
COOL or AUTO position. If you require warmth, be sure the
temperature control selector is set above room temperature
and the SYSTEM switch is at HEAT or AUTO. The FAN switch
should be set at ON for continuous blower operation or AUTO
if you wish the blower to function only while the unit is
operating.
If your comfort system still fails to operate, contact your ser-
vicing dealer for troubleshooting and repairs. Specify your ap-
parent problem, and state the model and serial numbers of
your equipment. (You should have them recorded on page 4
of this booklet.) With this information, your dealer may be
able to offer helpful suggestions over the phone, or save valu-
able time through knowledgeable preparation for the service
call.
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