Carrier 50EE User Manual
Carrier
A GUIDE TO OPERATING
AND MAINTAINING
YOUR RESIDENTIAL
AIR CONDITIONER.
AIR
COND ITI ONE R
NOTE TO INSTALLER:
This manual should be left with equipment user.i||f(|^J^
WELCOME TO EFFICIENT COOLING COMFORT
Congratulations on your excellent choice and sound invest
ment in home cooling comfort!
Your new air conditioner represents both the latest in engi
neering development and the culmination of many years of
experience from one of the most reputable manufacturers of
comfort systems.
Your new unit is among the most energy-efficient and reli
able air conditioning products available today. To assure its
dependability, spend just a few minutes with this booklet
now. Learn about the operation of your air conditioner and
the small amount of maintenance it takes to keep it operat
ing at its peeik efficiency.
With minimal care, your air conditioner will provide you and
your family with satisfying home comfort—both now and
for years to come.
IMPORTANT FACTS
To better protect your investment and to eliminate unneces
sary service cedis, familiarize yourself with the following
facts:
A WARNING
Improper installation, adjustment, alteration, service,
mmntenance or use can cause explosion, fire, electriced
shock or other conditions which may cause personal
injury or property damage. Refer to this manual. For
assistance or additional information consult a qualified
installer, service agency, distributor or branch. The
qualified installer or agency must use only factory
authorized kits or accessories when modifying this
product.
• Your air conditioning system should never be operated
without a clean air filter properly installed. Plan to inspect
the filter periodically. A clogged air filter will increase oper
ating costs and shorten the life of the unit.
• Supply-air and return-air registers should not be
blocked. Drapes, furniture, and toys are some of the items
commonly found obstructing grilles. Restricted airflow less
ens the unit’s efficiency and life span.
• Outdoor units must have unrestricted eiirflow. Do not
cover the unit, lean anything agmnst it, or stand upon it. Do
not allow grass clippings, leaves, or other debris to accumu
late around or on top of the unit. Maintain a 12-in. minimum
clearance between the outdoor unit and tall grass, vines,
shrubs, et cetera.
• Your multipurpose indoor thermostat is the control cen
ter for your air conditioning system. You should familiarize
yourself with its proper operation. Attempting to control
the system by other means—for instance, switching the
electrical supply power ON and OFF—may cause damage to
the unit.
• Thermostat “jiggling” causes rapid-cycling, which is
potentially damaging to the compressor. Do not move the
temperature selector on the thermostat for any reason for at
least 5 minutes after the compressor has shut off.
• You may find that you can maintain greater personal
comfort by running the fan continuously. “Air pockets” can
form due to the structure of the building, placement of reg
isters, et cetera. These mr pockets may be too cool or warm
for your liking. Continuous fan operation minimizes any
temperature differences. Also, systems equipped with elec
<?c?)
tronic air cleaners and/or humidifiers offer the added bene
fits of having the air continuously cleaned year-round, and
humidified during the winter season.
• Your air conditioner will remove humidity from your
home during the cooling season. After a few minutes of
operation, you should be able to see water trickle from the
condensate drain of the cooling coil. Check this occasionally
to be sure the drain system is not clogged. Of course, don’t
expect to see much drainage if you live in a very dry
environment.
OPERATING YOUR AIR CONDITIONER
The operation of your air conditioning system is controlled
by the indoor thermostat. You simply adjust the thermo
stat and it maintains the indoor temperature at the level
you select. Most thermostats for air conditioning systems
have three controls. These eu-e the temperature control selec
tor, FAN switch, and SYSTEM switch.
The temperature control selector is a died or lever that
allows you to establish the degree of temperature that you
wish to mainteun for your personed comfort. Some thermo
stats possess two temperature control selectors; one for set
ting the temperature desired during the cooling cycle, and
one to set the heating operation temperature (if the acces
sory electric heater is used). Typical settings are 78 degrees
Fahrenheit for cooling and 68 degrees for heating.
The FAN switch offers two options for controlling the
blower; AUTO and ON. When set to AUTO, the blower will
run during the time the air conditioner is operating. When
the FAN switch is set at the ON position, the blower will
run continuously.
Typically, the SYSTEM switch on your thermostat offers
the following selections: COOL, OFF, and HEAT. Your
thermostat may also have a fourth selection, AUTO. The eur
conditioner will not operate when the SYSTEM switch is
set at the OFF position. With the SYSTEM switch set at
COOL, the cooling section of your comfort system will oper
ate when the indoor temperature rises above the level that
you wish to maintain. With the SYSTEM switch set at the
HEAT position, the accessory electric heater will operate
automatically whenever the indoor temperature falls below
the level that you have selected.
The AUTO selection found on some thermostats provides
for automatic changeover between cooling and heating
cycles. With the SYSTEM switch set in the AUTO position,
the cooling mode is activated when the indoor temperature
rises above the thermostat cooling temperature setting, or
the heating mode will be activated when the indoor tempera
ture drops below the thermostat setting for the heating
cycle.
COOLING CYCLE
When operating in the cooling cycle, your air conditioner
will run until the indoor temperature is lowered to the level
you have selected. On extremely hot days, your air condi
tioner will run for longer periods at a time and have shorter
“off” periods than on moderate days.
The following are typical conditions that add extra heat
and/or humidity to your home. Your air conditioner will
work longer to keep your home comfortable under these
conditions:
• Entrance doors are frequently opened and closed
• Laundry appliances are being operated
• A shower is running
• More than the usual number of people are present in the
home
• More them the normal number of electric lights are in
use
• Drapes are open on the sunny side of the home
HEATING CYCLE
If you own a packaged air conditioner that includes electric
heat as an accessory, you need only program your thermo
stat for heating.
With the SYSTEM switch of your indoor thermostat set to
the HEAT position, the heating section of your home com
fort system will operate until room temperature is reused to
the level you have selected. Of course, the heating unit will
have to operate for longer periods to meuntedn a comfortable
environment on colder days emd nights than on moderate
ones.
PERFORMING ROUTINE MAINTENANCE
With the proper maintenance and care, your air conditioner
will operate economicedly Emd dependably. Meuntenance 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 REMOVING ACCESS
PANELS TO PERFORM SERVICE OR MAINTE
NANCE. For a packaged air conditioner unit, disconnect
power to the unit and any supplemental electric heaters.
NOTE: THERE MAY BE MORE THAN ONE ELECTRI
CAL DISCONNECT SWITCH.
• ALTHOUGH SPECIAL CARE HAS BEEN TAKEN
TO MINIMIZE SHARP EDGES IN THE CONSTRUC
TION OF YOUR UNIT, BE EXTREMELY CAREFUL
WHEN HANDLING PARTS OR REACHING INTO THE
UNIT.
CHECK THE AIR FILTER
A dirty air filter will cause excessive strain on the compres
sor arid blower motor. This can cause the components to
overheat and automatically shutdown. In the extreme, the
components will fail and need to be replaced. To avoid ineffi
cient or failed operation of your unit, CHECK THE FILTER(S) EVERY 3 TO 4 WEEKS. Replace filter(s) when necess£u-y, 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 thor
oughly dried. THE FILTER MUST BE COMPLETELY
DRY BEFORE BEING REINSTALLED. To avoid pro
longed 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. Extra filters may be purchased from your
deeder.
The filter(s) and filter rack for a packaged system are sup
plied and installed by the contractor or dealer. Typically,
the filter(s) and rack are located in the return-air duct at the
outdoor unit or behind the return-edr grille(s). Have your
dealer show you the location of your filter(s) and the proce
dures for removal and replacement.
If you have any questions about the removal and/or clean
ing of your filter(s), contact your dealer for assistemce.
If grass clippings, leaves, shrubbery, and debris eire kept
away from the unit, minimal care should be sufficient to
keep the system functioning properly. However, if the out
door coil becomes dirty, use a brush or vacuum cleaner and
soft brush attachment to deem the exterior surface. If dirt
is deep in the coil, contact your deeder for service. The out
door fan motor may have to be disconnected and the top
panel removed to gain access to the coil for thorough clean
ing. Do not attempt this yourself.
UNIT SUPPORT
Your packaged unit should be maintained at a level posi
tion. 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 collects beneath the unit,
arrange for it to be drained 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 airfiow. 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 desire
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 tempera
ture 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
servicing deeder for troubleshooting and repairs. Specify
your apparent problem, and state the model and serial num
bers 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 valuable time through knowledgeable preparation for
the service call.
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