5
approximately every 3 months, you will be adding additional life
to your unit. Consult your installing contractor for proper inter-
v als/procedures for your geographic area or service contact.

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. Rele vel it prompt-
ly 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
aw ay from the unit.

BEFORE YOU REQUEST A

SERVICE CALL

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 suf ficient airflow . Check the air filter(s) for any accu-
mulations of dirt. Check for block ed return-air or supply-air reg-
isters. Be sure re gisters are open and unobstructed.
• Check the settings on your indoor thermostat. If you desire
cooling, make sure that the temperature control selector is set
belo w room temperature and the SYSTEM or MODE control is
set to COOL or A UTO. If you require warmth, make sure that the
temperature control selector is set above room temperature and
the SYSTEM or MODE control is set to HEAT or AUT O. The
F AN control should be set to ON for continuous blo wer operation
or A UTO if you wish blower to function only while the heating or
cooling equipment is operating.
If your comfort system still fails to operate, turn your system of f
and contact your servicing dealer for troubleshooting and
repairs. Specify your apparent problem, and state the model and
serial numbers of your equipment. (You should ha ve them
recorded on the last page of this booklet.) With this information,
your dealer may be able to offer helpful suggestions ov er the
phone or save valuable time through knowledgeable 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 techni-
cian. 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, plus the primary and
secondary drain lines. If supplied, the auxiliary drain pan and line
should be inspected at this time. Service should include cleaning
if required.
failed operation of your unit, CHECK THE FIL TER(S) EVER Y
3 TO 4 WEEKS. Replace fi lter(s) when necessary, or clean the
filter(s) if you ha ve 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 deter gent, then rinsed and thoroughly dried. THE
FILTER MUST BE COMPLETELY DRY BEFORE BEING
REINSTALLED. To av oid prolonged shutdown of your unit
while a filter is drying, you should have an extra filter on hand.
This allows you to rotate 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 f an 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 fi lter to clear lower flange.
Filter is spring-loaded and will pop out. Reinstall filter, being
certain to secure filter behind lower flange. When reinstalling
cov er plate, secure plate behind upper flange then slide tabs out-
ward.
The indoor fan coil unit may be located in the attic. In this
instance the filter could be located behind the return air grille.
Access the filter by removing two screws from return air grille.
If your system includes an electronic air cleaner, refer to air
cleaner user’s manual for proper filter cleaning or replacement.

INDOOR COIL

If the split-system coil has only been operated with a clean fi lter
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 deter gent 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 suf ficient 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
attachment to clean the exterior surface. Vacuum coil surface
using an up and do wn motion. Be careful not to bend or damage
coil fins.
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.

OUTDOOR COIL—SEA COAST

If your unit is located near the ocean, special maintenance is
required. Ocean mist/breeze carries salt, which is corrosive to
most metals. Although your ne w unit is made out of g alvanized
metal and is protected by top-grade paint, you should take the
precaution of additional maintenance which consists of period-
ically washing the unit. By washing all exposed surfaces and coil