Carrier 38YCC060 Guide User manual

SAFETY CONSIDERATIONS
Recognize safety inS\wmation. This is the safety-alert symbol
z_. When you see this symbol on the unit and in instructions
or manuals, be alert to the potential S\_rpersonal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result
in severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is
used to identify unsafe practices which would result in minor
personal injury or product and property damage. NOTE is used
to highlight suggestions that will result in enhanced installa-
tion, reliability, or operation.
Improper installation, adjustment, alteration, ser-
vice, maintenance, or use can cause explosion,
fire, electrical shock, or other conditions which
may cause personal injury or property damage.
Consult a qualified installer, service agency, or
your distributor or branch for information or as-
sistance. The qualified installer or service agency
must use factory-authorized kits or accessories
when modifying this product.
To prevent personal injury, death, or property
damage, read and follow all instructions and warn-
ings, including labels shipped with or attached to
unit before operating your new heat pump.
IMPORTANT FACTS
To better protect your invest ment and to elilninate unnecessary
service calls, familiarize yourself with the S\_llowing facts:
• Each unit has a rating plate affixed to it which provides nec-
essary inS\wmation S\_rspecific identification of a unit. You
should familiarize yourself with the product, model, and serial
numbers listed on each rating plate. Record them S\_rfnture
reference on the last page of this booklet.
• Your heat pump system should never be operated without a
clean air filter properly installed. Plan to inspect the filter peri-
odically. A clogged air filter will increase operating 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
S\mnd obstructing registers. Restricted airflow lessens the
unit's efficiency and life span.
• The outdoor unit must have unrestricted airflow. Do not
cover the unit, lean anything against it, or stand on it. Do not
allow grass clippings, leaves, or other debris to accumulate
around or on top of the unit. Maintain a 12-in. minimum
clearance between the outdoor unit and tall grass, vines,
shrubs, etc.
• Your multipurpose indoor thermostat is the control center
for your heat pump system. You should familiarize yourself
with its proper operation. Attempting to control the system by
other means--S\_r instance, switching the electrical supply
power ON and OFF--may cause damage to the unit.
• During heating, increasing the thermostat setting more than
2 degrees may cause the supplemental heaters to be turned on
to satisfy the thermostat. Needless use of the supplementary
heat reduces potential energy savings.
• You may find that you can maintain greater personal com-
S\_rtby running the fan continuously. "Air pockets" can S\_rm
due to the structure of the house, placement of registers, etc.
These air pockets may be too cool or warm l\_r your liking.
Continuous fan operation minimizes any temperature differ-
ences. Also, systems equipped with electronic or mechanical
air cleaners and/or humidifiers offer the added benefits of hav-
ing the air continuously cleaned yea>round and humidified
during the winter season.
• A system equipped with a heat or energy recovery ventilator
offers the advantage of exhausting stale air Sromthe home and
allowing fresh air in from the outdoors while minimizing heat
loss.
• Your system may also be equipped with a zoning system
which allows individual control over the temperatures of sep-
arate areas of your home.
• Your heat pump will remove humidity fiom your home dur-
ing the cooling season. ASter a few minutes of operation, you
should be able to see water trickle from the condensate drain
of the indoor 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.
NOTE TO INSTALLER: THIS MANUAL SHOULD BE LEFT WITH THE EQUIPMENT USER.

• During the heating cycle, air from your registers may seem
cooler than you might first expect. This is because your heat
pump delivers a constant flow of air at around 90°F to 105°F
instead of in sudden bursts of hot air as with a conventional
furnace. This air may feel cool because it is slightly less than
your skin temperature. However, it is sufficiently warm to
keep you coml\wtable.
• Ice or frost will tend to form on the outdoor coil during the win-
ter heating operation. Your heat pump is designed to automatical-
ly melt the ice. When in this defrost cycle, it is normal for steam
or I\_gto rise from the outdoor unit. Do not be alarmed?
• Do not operate your unit in cooling mode when outdoor
temperatures are below 55°F unless your unit was modified
l\_rlow-ambient operation.
• Do not operate your unit in heating mode when outdoor
temperatures are above 66°F unless you set your thermostat
to emergency heat mode.
OPERATING YOUR HEAT PUMP
The operation of your heat pump system is controlled by the
indoor thermostat. You simply adjust the thermostat and it
maintains the indoor temperature at the level you select. Most
thermostats l\w heat pump systems have three controls: a tem-
perature control selector, a FAN control, and a SYSTEM or
MODE control.
The FAN control offel.Stwo options for controlling the indoor
blower: AUTO and ON. When set to AUTO, the blower l-unsonly
when the heat pump is operating. When set to ON, the Nower l'uns
continuously.
Typically, the SYSTEM or MODE control on your thermostat
offers the l\_llowing selections: COOL, OFE HEAT, AUTO,
and EMERGENCY HEAT. Some thermostats may have a sep-
arate switch t\_rEMERGENCY HEAT. The heat pump will not
operate when the SYSTEM OR MODE control is set to OFF.
With the SYSTEM or MODE control set to COOL, your heat
pump will provide cooling when the indoor temperature rises
above the level you wish to maintain. With the SYSTEM or
MODE control set to HEAT. your heat pump will provide
warmth whenever the indoor temperature falls below the level
that you have selected.
The AUTO selection t\mnd on some thermostats provides l\_r
automatic changeover between cooling and heating. With the
SYSTEM or MODE control set toAUTO, cooling operation is
activated when the indoor temperature rises above the thermo-
stat cooling temperature setting, or heating operation is acti-
vated when the indoor temperature drops below the thermostat
heating setting.
Depending on your typical winter heating needs, your home
comt\wt system may include a supplementary heating source.
The EMERGENCY HEAT setting (EHEAT) provides l\_r con-
venient selection between the two heating appliances. Your
heat pump will operate when the SYSTEM or MODE control
is set to HEAT. With the SYSTEM or MODE control set to
EHEAT. the heat pump will turn off and the supplementary
heat source will be activated.
In certain geographic areas and in certain applications, supple-
mental heat is not required. Any questions regarding your
application should be directed to your dealel;
COOLING MODE
When operating in cooling mode, yonr heat pump will run in
cooling mode until the indoor temperature is lowered to the
level you have selected. On extremely hot days, your heat
pump will run for longer periods at a time and have shorter
"oW' periods than on moderate days.
The t\_llowing are typical conditions that add extra heat and/or
humidity to your home. Your heat pump will work longer to
keep your home coml\wtable 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 than the normal number of electric lights are in use
• Drapes are open on the sunny side of the home
HEATING MODE
With the SYSTEM or MODE control of your indoor thermo-
stat set to HEAT, your heat pump will run in heating mode until
room temperature is raised to the level you have selected. Of
course, your heat pump will have to operate l\_r longer periods
to maintain a comt\mable environment on cooler days and
nights than on moderate ones.
SUPPLEMENTAL HEAT
Your heat pump is your prili'lary heating source. Y_our system
may also be 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 coml\_rt you have selected.
DEFROST MODE
When your heat pump is providing heat to your home and the
outdoor temperature 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 all: So, to maintain
energy-efficient operation, your heat pump has an automatic
defrost mode.
The defrost mode starts at a preset time interval of 90 minutes,
although, it may be reset to either 30 or 50 minutes. Defrost
will start at the preset time only if the ice is sufficient to inter-
fere with normal heating operation.
After the ice is melted from the outdoor coil, or after a maxi-
mum of 10 minutes in defrost mode, the unit automatically
switches back to normal heating operation.
Do not be alarmed if steam or fog appears at the outdoor unit
during defrost mode. Water vapor from the melting ice may
condense into a mist in the cold outside all:
During certain weather conditions such as heavy snow and
freezing rain it is not uncommon l\_r 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 function of the unit
and will clear within a few days.
EMERGENCY HEAT MODE
The emergency heat (EHEAT) setting on your Carrier electron-
ic thermostat can be used to turn off your heat pump and use
only the supplemental heating source (if equipped). The Aux-
iliary 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,whenitisnecessary,suchaswhenyourheatpump
requiresservicing.
Iftheelectricitytoyourheatpumphasbeenofft\_rmorethan
30minutes,switchyourthermostattoEHEATmodebefore
restartingyourheatpump.LeavethesysteminEHEATmode
l\_ranamountoftimeequaltothepoweroutage.Itisnotneces-
sarytoexceed12hrs.Ifyoucannotdeterminehowlongthe
powerhasbeenoft,leavethesysteminEHEATmodel\_r8hrs.
PERFORMING ROUTINE
MAINTENANCE
With the proper maintenance and care, your heat pump will
operate economically and dependably. Maintenance can be
accomplished easily by referring to the l\_llowing directions.
However, bet\_re performing maintenance, consider these
important safety precautions:
Disconnect all electrical power to the indoor air han-
dler or furnace before removing access panels to per-
form any maintenance. Disconnect power to both the
indoor and outdoor units. Note: There may be more
than one electrical disconnect switch. Electrical
shock can cause personal injury or death.
Although special care has been taken to minimize
sharp edges in the construction of your unit, be ex-
tremely careful when handling parts or reaching into
the unit. Failure to follow this caution could result in
minor personal injury or product and property
damage.
CHECKTHE AIR FILTER
Adirty air filter will cause excessive strain on the compressor
and blower motor. This can cause the components to over-heat
and automatically shut down. In the worst case, the compo-
nents 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 similal: 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 prolonged shut-
down of your unit while a filter is drying, you should have an
extra filter on hand. This allows you to rotate between the 2
with minimal downtime for your coml\_rt 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 tier filter location and procedures for replacement or
cleaning.
If your system includes an indoor thn coil unit, the filter may be
located in the unit where it connects with the return-air duct or
plenum. (See Fig. 1.)Remove the filter cover plate by sliding
latches toward center of plate. Lift filter to clear lower flange. Fil-
ter is spring-loaded and will "pop out." Reinstall filter, being cer-
tain 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
instance the filter may be located behind the return air grille.
Access the filter by removing the return air grille.
If your system includes a high efficiency or electronic air
cleaner, refer to air cleaner User's Manual t\_r proper filter
cleaning or replacement.
INDOOR COIL
If the split-system coil hits only been operated with a clean
filter in place, it should require minimal cleaning.
If coil cleaning is required, call your dealer ti_r 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
IS"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. How-
ever, if the outdoor coil becomes dirty, use a vacuum cleaner
or shop vac with soft blush attachment to clean the exterior
surface. Vacuum coil surface using an up and down motion. Be
carefnl not to bend or damage fins.
If dirt is deep in the coil, contact your dealer t\_r service. The
outdoor fan motor may have to be disconnected and the top
panel removed to gain access to the coil t\_rthorough cleaning.
Do not attempt this yourself.
OUTDOOR COILmSEA COAST
If your unit is located near the ocean, special maintenance is
required. Ocean mist/breeze CalTiessalt, which is conosive to
most metals. Although your new unit is made out of galvanized
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, you will be adding additional life to your unit. Please
consult your installing contractor for proper intelwals/proce-
dures t\_ryour geographic area or selwice contact.
Fig. 1--Removing Filter from Fan Coil Unit

UNIT SUPPORT
Your split-system outdoor uuit should be maiutaiued 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 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.
Heat pumps installed in snowbelt areas should be elevated with
support feet or a snow stand.
BEFORE YOU REQUEST A
"SERVICE CALL"
CHECK FOR THESE EASILY SOLVED
PROBLEMS:
• Check the indoor and outdoor disconnect switches. Verily
that circuit breakers are ON or that fuses have not blown.
• Check l\w sufficient airflow. Check the air filter(s) t\_r any
accumulations of dirt. Check t\w blocked return-air or supply-
air registers. Be sure registers are open and unobstructed.
• Check the settings on your indoor thermostat. If you desire
cooling, make sure 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, make sure
that the temperature control selector is set above room temper-
ature and the SYSTEM or MODE control is set to HEAT or
AUTO. The FAN control should be set to ON t\w continuous
blower operation or AUTO if you wish blower to function only
while your heat pump is operating.
If your coml\wt system still lhils to operate, turn your system
off and contact your servicing dealer t\w troubleshooting and
repairs. Specify your apparent problem, and state the model
and serial numbers of your equipment. (Ytm should have theru
recorded on the last page of this booklet.) With this informa-
tion, your dealer may be able to offer helpful suggestions over
the phone or save valuable time through knowledgeable prep-
aration l\_rthe service call.
REGULAR DEALER
MAINTENANCE
In addition to the routine mainte-
nance that you perl\wm, your home
comfort system should be inspect-
ed regularly by a properly trained
service technician. The inspection
(preferably twice each year. but at
least once every year) should
include the l\_llowing:
• Routine inspection of air filter(s). Replacement or cleaning
as required.
• Inspection and cleaning of the blower wheel, housing, and
motor as required.
• Inspection and, ifrequired, 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.
• A check of all electrical wiring and connections.
• A check t\_r secure physical connections of individual com-
ponents within units.
• Operational check of the heat pump system to determine
actual working condition. Necessary repair and/or adjustment
should be perl\wmed at this time.
• Your selwicing dealer may offer an economical service
contract that covers seasonal inspections. Ask t\_rfurther
details.
FORTHE RECORD
Record the model, product, and serial numbers of your new
equipment. This inl\_rmation, along with the other ready-
reference facts requested will be necessary should you ever
require inl\)rmation or selwice.
Installation: Date
Outdoor Unit: Product No.
Indoor Unit: Product No.
Dealer Name, Address, Phone
Model No.
Model No. Serial No. Serial No.
HEATING & COOLING
TO OBTAIN INFORMATION ON PARTS: Consult your Installing dealer or classified section of your local telephone directory under the
"Heating Equipment" or "Air Conditioning Contractors & Systems" heading for dealer IlsUng by brand name.
Have available the Model No., Series Letter, & Serial No. of your equipment to ensure correct replacement part.
Carrier Corporation • Indianapolis, Indiana 46231
Manufacturer reserves the right to dlsconUnue, or change at any time, specifications or designs without notice and without Incurring obligations.
Copyright 2003 Carrier Corporation Form: 0M38-54 Replaces: OM38-52 Printed in the U.S.A. 04-03 PC 101 Catalog No. 533-80075