Carrier CS78421-548-754 User manual

SPLIT-TYPE ROOM AIR CONDITIONER
CS78421-548-754
IMPORTANT NOTE:
Read this manual carefully before installing
or operating your new air conditioning
unit. Make sure to save this manual for
future reference.
Owner’s Manual

Safety Precautions.......................................................04
Unit Specifications and Features ..............................06
Table of Contents
Owner’s Manual
0
1
SAFETY
FIRST
Manual Operation
(Without Remote)................11
2

Care and Maintenance.....................................................12
Troubleshooting...................................................................14
3
4
European Disposal Guidelines....................................18
5

Page 4 
Safety Precautions
Read Safety Precautions Before Installation
The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.
WARNING
This symbol indicates that ignoring instructions may cause death or serious
Incorrect installation due to ignoring instructions can cause serious damage or injury.
injury.
This symbol indicates that ignoring instructions may cause moderate injury
to your person, or damage to your appliance or other property.
CAUTION
WARNING
This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been given
supervision or instruction concerning use of the appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be
made by children without supervision.
INSTALLATION WARNINGS
•
Ask an authorized dealer to install this air conditioner. Inappropriate installation may cause water
leakage, electric shock, or fire.
•
All repairs, maintenance and relocation of this unit must be performed by an authorized service
technician. Inappropriate repairs can lead to serious injury or product failure.
WARNINGS FOR PRODUCT USE
•
If an abnormal situation arises (like a burning smell), immediately turn off the unit and pull the
power plug. Call your dealer for instructions to avoid electric shock, fire or injury.
•
Do not
insert fingers, rods or other objects into the air inlet or outlet. This may cause injury, since
the fan may be rotating at high speeds.
•
Do not
use flammable sprays such as hair spray, lacquer or paint near the unit. This may cause
fire or combustion.
•
Do not
operate the air conditioner in places near or around combustible gases. Emitted gas may
collect around the unit and cause explosion.
•
Do not
operate the air conditioner in a wet room (e.g., bathroom or laundry room). This can
cause electrical shock and cause the product to deteriorate.
•
Do not
expose your body directly to cool air for a prolonged period of time.
Safety
Precautions

Safety
Precautions
Page 5 
ELECTRICAL WARNINGS
• Only use the specified power cord. If the power cord is damaged, it must be replaced by the
manufacturer or certified service agent.
• Keep power plug clean. Remove any dust or grime that accumulates on or around the plug. Dirty
plugs can cause fire or electric shock.
• Do not pull power cord to unplug unit. Hold the plug firmly and pull it from the outlet. Pulling
directly on the cord can damage it, which can lead to fire or electric shock.
• Do not use an extension cord, manually extend the power cord, or connect other appliances to
the same outlet as the air conditioner. Poor electrical connections, poor insulation, and insufficient
voltage can cause fire.
CLEANING AND MAINTENANCE WARNINGS
• Turn off the device and pull the plug before cleaning. Failure to do so can cause electrical shock.
• Do not clean the air conditioner with excessive amounts of water.
• Do not clean the air conditioner with combustible cleaning agents. Combustible cleaning agents
can cause fire or deformation.
CAUTION
• If the air conditioner is used together with burners or other heating devices, thoroughly ventilate
the room to avoid oxygen deficiency.
• Turn off the air conditioner and unplug the unit if you are not going to use it for a long time.
• Turn off and unplug the unit during storms.
• Make sure that water condensation can drain unhindered from the unit.
• Do not operate the air conditioner with wet hands. This may cause electric shock.
• Do not use device for any other purpose than its intended use.
• Do not climb onto or place objects on top of the outdoor unit.
• Do not allow the air conditioner to operate for long periods of time with doors or windows open,
or if the humidity is very high.

Page 6 
Unit Specifications and Features 1
Unit
Specifications
and Features
NOTE:
A guide on using the infrared remote is not included
in this literature package.
Unit Parts
fresh defrost run timer
Power Cable (Some Units)
Remote Control
Remote Holder
(Some Units)
Louver
Front Panel
Display window(A)
Display window(B)
“ ” for 3 seconds when:
• TIMER ON is set
• FRESH, SWING, TURBO, or SILENCE features are turned on
“ ” when Fresh feature is activated(some units)
“ ” for 3 seconds when:
• TIMER OFF is set
• FRESH, SWING, TURBO, or SILENCE features are turned off
“ ” when defrosting
“ ” when anti-cold air feature is turned on
“ ” when unit is self-cleaning
“ ” when freeze protection is turned on
“ ” when defrost feature is activated.
Display Code
Meanings
In Fan mode, the unit will display the room temperature.
In other modes, the unit will display your temperature setting.
,
,
“ ” Not available for all units.
When ECO function(some units) is activated, the
illuminates gradually one by one as --
-- --set temperature -- ...... in one second interval.
fresh defrost run timer
“ ” when the unit is on.
“ ” when TIMER is set.
When error occurs, it displays error code.
fresh
defrost
run
timer

Unit
Specifications
and Features
Page 7 
Achieving Optimal Performance
Optimal performance for the COOL, HEAT, and DRY modes can be achieved in the following
temperature ranges. When your air conditioner is used outside of these ranges, certain safety
protection features will activate and cause the unit to perform less than optimally.
Room
Temperature 17°-32°C (63°-90°F) 0°-30°C (32°-86°F) 10°-32°C (50°-90°F)
Outdoor
Temperature
18°-43°C (64°-109°F)
-7°-24°C (19°-75°F)
11°-43°C (52°-109°F)
-7°-43°C (19°-109°F)
(For models with low-temp cooling systems) 18°-43°C (64°-109°F)
18°-54°C (64°-129°F)
(For special tropical models) 18°-54°C (64°-129°F) (For special tropical models)
COOL mode HEAT mode DRY mode
COOL mode HEAT mode DRY mode
Room Temperature 17°C - 32°C
(63°F - 90°F)
0°C - 30°C
(32°F - 86°F)
10°C - 32°C
(50°F - 90°F)
Outdoor
Temperature
0°C - 50°C
(32°F - 122°F)
-15°C - 30°C
(5°F - 86°F)
0°C - 50°C
(32°F - 122°F)
0°C - 60°C
(32°F - 140°F)
(For special
tropical models)
0°C - 60°C
(32°F - 140°F)
(For special
tropical models)
-15°C - 50°C
(5°F - 122°F)
(For models with
low temp. cooling
systems.)
To further optimize the performance of your unit, do the following:
• Keep doors and windows closed.
• Limit energy usage by using TIMER ON and TIMER OFF functions.
• Do not block air inlets or outlets.
• Regularly inspect and clean air filters.
FOR OUTDOOR UNITS
WITH AUXILIARY
ELECTRIC HEATER
Inverter Split Type
Fixed-speed Type
When outside
temperature is below 0°C
(32°F ), we strongly
recommend keeping the
unit plugged in at all
time to ensure smooth
ongoing performance.

Unit
Specifications
and Features
Page 8 
For a detailed explanation of each function,
refer to the Remote Control Manual.
Other Features
•
•
Auto-Restart
If the unit loses power, it will automatically
restart with the prior settings once power has
been restored.
• Anti-mildew (some units)
When turning off the unit from COOL, AUTO
(COOL), or DRY modes, the air conditioner will
continue operate at very low power to dry up
condensed water and prevent mildew growth.
• Wi-Fi Control (some units)
Wi-Fi control allows you to control your air
conditioner using your mobile phone and a
Wi-Fi connection.
• Louver Angle Memory(some units)
When turning on your unit, the louver will
automatically resume its former angle.
• Refrigerant Leakage Detection (some
units)
The indoor unit will automatically display “EC”
For a detailed explanation of your unit’s
advanced functionality (such as TURBO
mode and its self-cleaning functions),
refer to the Remote Control Manual.
Air Filter Reminders (some units)
The “timer” indicator light turns off and
the “run” indicator light flashes 7 times
when the unit detects refrigerant leakage.
Air Filter Cleaning Reminder
Air Filter Replacement Reminder
After 240 hours of use, the “run” &
“timer” indicator lamps on the indoor
unit will flash simultaneously and the
display window on the indoor unit will
flash “CL” (if applicable). This is a
reminder to clean your filter. After 15
seconds, the unit will revert to its
previous display.
To reset the reminder, press the LED
button on your remote control 4 times,
or press the MANUAL CONTROL botton
3 times. If you don’t reset the reminder,
the “CL”, “run” & “timer” indicator
lamps will flash again when you restart
the unit.
After 2,880 hours of use, the “run” &
“timer” indicator lamps will flash
simultaneously for 10 times, then
remain on for five seconds,and the
display window on the indoor unit will
flash “nF”(if applicable). This is a reminder
to replace your filter. After that, the unit
will revert to its previous display.
To reset the reminder, press the LED
button on
your remote control 4 times,
or press the
MANUAL CONTROL botton
3 times. If you don’t reset the reminder,
the “nF”, “run” & “timer” indicator
lamps will flash again when you restart
the unit.

Page 9 
Setting vertical angle of air flow
While the unit is on, use the SWING/DIRECT
button to set the direction (vertical angle) of
airflow.
1. Press the SWING/DIRECT button once to
activate the louver. Each time you press
the button, it will adjust the louver by 6°.
Press the button until the direction you
prefer is reached.
2. To make the louver swing up and down
continuously, press and hold the SWING/
DIRECT button for 3 seconds. Press it
again to stop the automatic function.
The horizontal angle of the airflow must be set
manually. Grip the deflector rod (See Fig.B)
and manually adjust it to your preferred direction.
For some units, the horizontal angle of the airflow
can be set by remote control. please refer to the
Remote Control Manual.
NOTE ON LOUVER ANGLES
When using COOL or DRY mode, do not set
louver at too vertical an angle for long periods
of time. This can cause water to condense on
the louver blade, which will drop on your floor
or furnishings. (See Fig.A)
When using COOL or HEAT mode, setting the
louver at too vertical an angle can reduce the
performance of the unit due to restricted air
flow.
Do not move louver by hand. This will cause the
louver to become out of sync. If this occurs, turn
off the unit and unplug it for a few seconds,
then restart the unit. This will reset the louver.
Fig. A
CAUTION
Do not put your fingers in or near the blower
and suction side of the unit. The high-speed
fan inside the unit may cause injury.
Fig. B
Setting Angle of Air Flow
Setting horizontal angle of air flow
•
Unit
Specifications
and Features
Range
Caution: Do not keep louver at too
vertical an angle for long periods of
time. This can cause water condensation
to drip on your furnishings.
Deflector rod

Page 10 
The SLEEP function is used to decrease energy
use while you sleep (and don’t need the same
temperature settings to stay comfortable). This
function can only be activated via remote control.
Press the SLEEP button when you are ready to
go to sleep. When in COOL mode, the unit will
increase the temperature by 1°C (2°F) after 1
hour, and will increase an additional 1°C (2°F)
after another hour. When in HEAT mode, the unit
will decrease the temperature by 1°C (2°F) after
1 hour, and will decrease an additional 1°C (2°F)
after another hour.
It will hold the new temperature for 5 hours, then
the unit will turn off automatically.
Note:The SLEEP function is not available in
FAN or DRY mode.
Sleep Operation
Set
temperature
Saving energy during sleep
1hr 1hr
7 hours
timer o
+/- 1 C/2 F
SLEEP Operation
+/- 1 C/2 F
•
Unit
Specifications
and Features