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equipped with a supplemental heating
source such as electric, gas, or oil. On
cold days and nights, your system will
automatically turn on the supplemental
heat in order to maintain the level of
comfort you have selected.
Your Bryant electronic thermostat will
display the words ENERGY SAVINGS
when the heat pump is providing all the
heat that is necessary. When
additional heat is required, your thermo-
stat will turn on the supplemental heat
(if equipped) and will display the
AUX HT message.
DEFROST CYCLE
When your heat pump is providing heat
to your home and the outdoor tempera-
ture drops below 45°F, moisture may
begin to freeze on the surface of the
outdoor coil. If allowed to build up, this
ice would impede airflow across the
coil and reduce the amount of heat
absorbed from the outside air. So, to
maintain energy-efficient operation,
your heat pump has an automatic
defrost cycle.
The defrost cycle starts at a preset time
interval of 90 minutes, although, it may
be reset to either 30 or 50 minutes by your
dealer. Defrost will start at the preset time
only if the ice is sufficient to interfere
with normal heating operation.
After the ice is melted from the outdoor
coil, or after a maximum of 10 minutes
in the defrost mode, the unit will
automatically switch back to normal
heating operation.
Do not be alarmed if steam or fog appears
at the outdoor unit during the defrost
cycle. Water vapor from the melting ice
may condense into a mist in the cold
outside air.
During certain weather conditions such
as heavy snow and freezing rain it is not
uncommon for ice to build up on the
outdoor unit grille. This is normal for
these weather conditions. Do not attempt
to remove the ice from the outdoor unit
grille. This condition will not affect the
proper functioning of the unit and will
clear within a few days.
EMERGENCY HEAT
The emergency heat (EHEAT) setting on
your Bryant electronic thermostat can be
used to turn off your heat pump and use
only the supplemental heating source (if
equipped). The Auxiliary Heat Indicator
(AUX HT) will be displayed while your
system is operating in EHEAT mode.
Emergency heat is not normally used.
There may be situations, however, where
it is necessary. Your Bryant programmable
electronic thermostat has a service alarm
indicator. In the heating season, if the ther-
mostat ever displays the TROUBLE mes-
sage, switch your thermostat to EHEAT
mode and call your dealer. This allows
your supplemental heating source to keep
your home warm until your heat pump can
be serviced. Also, if the electricity to your
heat pump has been off for more than 30
minutes, switch your thermostat to
EHEAT mode before restarting your heat
pump. Leave the system in EHEAT mode
for an amount of time equal to the power
outage. It is not necessary to exceed 12 hrs.
If you cannot determine how long the
power has been off, leave the system in
EHEAT mode for 8 hrs.
PERFORMING ROUTINE
MAINTENANCE
With the proper maintenance and care, your
heat pump unit will operate
economically and dependably. Mainte-
nance can be accomplished easily by refer-
ring to the following directions. However,
before performing maintenance, consider
these important safety precautions.
WARNING
Disconnect all electrical power to the
indoor air handler or furnace before
removing access panels to perform
any maintenance. Disconnect power
to both the indoor and outdoor units.
NOTE: There may be more than 1
electrical disconnect switch. Electri-
cal shock can cause personal injury
or death.
Fig. 4—Main Electrical
Disconnect
MAIN
ON
OFF
!
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,
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 dimen-
sions.
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 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 filters 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 pro-
cedures 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 cen-
ter of plate. Lift filter to clear lower flange.
Filter is spring-loaded and will pop out.
Reinstall filter, being certain to secure fil-
ter 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 instance the filter may be
located behind the return air grille. Access
the filter by removing the return air grille.
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 solu-
tion and rinse it with water. This could
CAUTION
Although special care has been
taken to minimize sharp edges in
the construction of your unit, be
extremely careful when handling
parts or reaching into the unit.
!