Filter
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5
CHECK THE AIR FILTER
A dirty air filter will cause excessive
strain on the compressor and blower
motor. This can cause the components to
overheat and automatically shut down. In
the extreme case, the components will
fail and need to be replaced. To avoid
inefficient or failed operation of your
unit, CHECK THE FILTER(S) EVERY
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 BEFORE
BEING REINSTALLED. To avoid pro-
longed shutdown of your unit while a filter
is drying, you should have an extra filter
on hand. This would allow you to switch
between the two with minimal downtime
for your comfort system. Extra filters may
be purchased from your dealer.
There are no filters in the outdoor unit
of a split-system. If your indoor unit is a
gas or oil furnace, refer to your furnace
User’s Manual for filter location and
procedures for replacement or cleaning.
If your system includes an indoor fan
coil unit, the filter may be located in the
unit where it connects with the return-
air duct or plenum. (See Fig. 5.)
Remove the filter cover plate by sliding
latches toward center of plate. Lift filter
to clear lower flange. Filter is spring-
loaded and will pop out. Reinstall filter,
being certain to secure filter behind
lower flange. When reinstalling cover
plate, secure plate behind upper flange
then slide tabs outward.
The indoor fan coil unit may be located in
the attic. In this application, the filter could
be located behind the return air grille.
Access the filter by removing 2 screws
from return air grille.
ELECTRONIC AIR CLEANER
If your system contains an Electronic Air
Cleaner consult the User’s Manual for
specific care of that product.
INDOOR COIL
If the indoor coil has only been operated
with a clean filter in place, it should
require minimal cleaning.
If coil cleaning is required, call your dealer
for service. It may be necessary to clean
the coil with a detergent solution and rinse
it with water. This could require the
removal of the coil. You should not
attempt this yourself.
OUTDOOR COIL
If grass clippings, leaves, shrubbery, and
debris are kept away from the outdoor
unit, minimal care should be sufficient to
keep the system functioning properly. For
proper drainage, debris must be removed
periodically from the base pan. However,
if the outdoor coil becomes dirty, use a
vacuum cleaner with soft brush attach-
ment to clean the exterior surface. Vacuum
coil surface using an up and down motion.
Be careful not to bend or damage coil fins.
If dirt is deep in the coil, contact your deal-
er for service. The outdoor fan motor may
have to be disconnected and the top panel
removed to gain access to the coil for thor-
ough cleaning. Do not attempt this
yourself.
OUTDOOR COIL—
SEA COAST
If your unit is located near the ocean, spe-
cial maintenance is required. Ocean mist/
breeze carries salt, which is corrosive to
most metals. Although your new unit is
made of galvanized metal and is protected
by top-grade paint, you should take the
precaution of additional maintenance
which consists of periodically washing the
unit. By washing all exposed surfaces and
coil approximately every 3 months, you
will be adding additional life to your unit.
Consult your installing contractor for
proper intervals/procedures for your
geographic area or service contract.
UNIT SUPPORT
Your split-system outdoor unit should be
maintained in 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 that water drains 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
CHECK FOR THESE EASILY
SOLVED PROBLEMS:
• Check the indoor and outdoor dis-
connect switches. Verify that circuit break-
ers 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 registers. Be sure registers are
open and unobstructed.
• Check the settings on your indoor ther-
mostat. If you desire cooling, see that the
temperature control selector is set below
room temperature and the SYSTEM or
MODE control is set to COOL or AUTO.
If you require warmth, be sure the tem-
perature control selector is set above
room temperature and the SYSTEM or
MODE control is set to HEAT or AUTO.
The FAN should be set to ON for contin-
uous blower operation or AUTO if you
wish blower to function only while the
unit is operating.
• Check note concerning special features
and time delays in “Operating Your Air
Conditioner” section.
If your comfort system still fails to
operate, contact your servicing dealer
for troubleshooting and repairs. Specify
your apparent problem, and state the
model and serial numbers of your equip-
ment. (You should have them recorded on
the last page of this booklet.) With this
information, your dealer may be able to
offer helpful suggestions over the phone or
save valuable time through knowledge-
able preparation for the service call.
REGULAR DEALER
MAINTENANCE
In addition to the routine maintenance
that you perform, your home comfort
system should be inspected regularly by
a properly trained service technician. The
inspection (preferably each year, but at
least every other year) should include the
following:
• Routine inspection of air filter(s).
Replacement or cleaning as required.
• Inspection and cleaning of the blower
wheel, housing, and motor.
• Inspection and, if required, cleaning of
indoor and outdoor coils.
• Inspection of the indoor coil drain pan,
Fig. 5—Removing Filter
from Fan Coil Unit