Carrier 53QC 36-48 User manual

Rev. (0) - 2013
Quality
Management System
ISO 9001 : 2008
Certicate No.: QS-5519HH
Enviromental
Management System
ISO 14001 : 2004
Certicate No : 12 104 30334 TMS
Safety
Management System
BS OHSAS 18001 : 2007
Certicate No : 12 116 30334 TMS
03501148
OWNER’S MANUAL
Carrier is committed to continuously improving its products according to national and international standards
to ensure the highest quality and reliability standards, and to meet market regulations and requirements.
All specications subject to change without prior notice according to Carrier policy of continuous development.
Cassette
Sky
53QC 36 - 48
HEAT PUMP
220-240V ~ 50Hz 1Ph
380-420V ~ 50Hz 3Ph
R
2
2

220-240V ~ 50Hz 1Ph
380-420V ~ 50Hz 3Ph
Four-Way Cassette Split Systems
Heat Pump
R
2
2
Sky
Super
Quiet
Smart LCD
Wireless Control
Refrigerant
Leak Detection
Fashion
Design
Slim
Design
Efficient
Anti-dust Filters
Fresh Air
(option)
IAQ
Efficient
AMS
Efficient
Compressor
AMS
Efficient
Fans
Efficient
Coils
Inner Groove
Copper Tubing
Hydrophilic
Aluminum Fins
3 Minutes
Time Delay
3
Min.
Self diagnostic
function
Anti-Freezing
Protection
High Temp.
Protection
Cold Draft
Protection
Defrost
Protection
High
Temp.
Protect
Anti
Freezing
Smart
Airow
Efficient
Operation
LE
LED
Display
Vertical Airflow
Auto Swing
Wide-angle
Airflow
Auto
Fan Speed
Auto
Built-in
Drain Pump
Easy Fast Service
& Maintenance
Cleanable
Front Panel
Washable
Air Filter
Easy Flexible
Installation
Auto Restart
Function
Timer
Functions
Independent Dehu-
midication
Auto
Mode
ECO
Function

Thank you for selecting Carrier
Air Conditioner
Sky Cassette Split is the optimum air conditioning solution for
large places which require ceiling installation above false ceiling,
elegant appearance and ultimate comfort combined with efficient,
quiet operation and optimum uniform air distribution.
CONTENTS
PAGENO.
1. GENERAL INFORMATION 1
2. SYSTEM SAFETY PROTECTIONS 2
3. TIPS OF ENERGY SAVING AND OPTIMUM COMFORT 3
4. SPLIT SYSTEM DESCRIPTION 4
5. CONSIDERATIONS FOR REMOTE CONTROL 5
6. USE OF REMOTE CONTROL 6
7. AIR FILTERS CLEANING 19
8. INDOOR UNIT CLEANING 19
9. PERIODICAL CHECKS 20
10. CONSIDERATIONS BEFORE A LONG SHUTDOWN PERIOD
OF AIR CONDITIONER 20
11. OPERATION TIPS 21
12. TROUBLE SHOOTING 22

(1)
1. GENERAL INFORMATION
PRECAUTIONS
Installing and servicing of air conditioning equipment can be hazardous due to system
pressure and electrical components. Only trained and qualified service personnel should
install or service this equipment.
Untrained personnel can perform basic maintenance function such as cleaning coil and
filters. Trained service personnel should perform all other operations.
When working on air conditioning equipment, observe precautions in the literature, tags
and labels attached to the unit.
WARNINGS
•The operating voltage of electrical power supply should be within the voltage mentioned on unit
nameplate data.
•The capacity of electrical kWh counter should be larger than the operating currents required for
air conditioner(s) and any other electrical domestic appliances in use simultaneously from the
same supply.
•The installation of electrical distribution box after the electrical KWH counter is necessary to
properly distribute the electrical loads. The electrical distribution box should be equipped with
circuit breakers according to the electrical loads. For each installed air conditioner, a separate
circuit breaker with its own overload should be installed on the electrical distribution box.
•The installation of two-pole automatic circuit breaker is necessary to operate the air conditioner.
The circuit breaker must be installed to be far away from any flammable materials (curtains…etc.).
The circuit breaker size must be suitable for air conditioner.
•Disconnect the electrical mains supply prior to any maintenance operations or prior to handling
any internal unit parts.
•The manufacturer declines any liability for damage resulting from modifications or errors in the
electrical or refrigerant connections, made during the installation, or from the improper use of this
equipment. This will void the unit warranty immediately.
•Failure to observe electrical safety codes may cause a fire hazard in case of short circuits.
•This system will only work safety and correctly, if installed and tested by qualified personnel.
•Do not open the electronic remote controller to avoid possible damage. In case of malfunction
contact a qualified service engineer.
•The unit contains rotating equipment (fan). Ensure that this is out of reach for children.
•Be conscious of the room temperature and general comfort, particularly when this is used near
children, senior or handicapped people.
•For correct use, the air conditioner must operate within the temperature limits indicated in the
table “Operating Limits” included in the installation manual. Incorrect use of the system outside
these limits may cause malfunction and dripping water.
•Controller batteries contain polluting elements. When exhausted, they must be disposed of in
accordance with local requirements.
•Do not switch off the split system by disconnecting the electric power supply.
The system must always be switched off using the remote control.

(2)
2. SYSTEM PROTECTION DEVICES
The air conditioner is equipped with complete safety protections to ensure safe
operation of air conditioner.
2.1 Safety protections of Cooling operation
Auto restart Feature with backup memory.
When the power failure is happened during system operation, the micom of printed circuit board
will memorize the operation settings. After the power is recovered, the system operates
automatically ( without remote control ) after compressor time delay, according to the previous
operation settings.
3 (Three) minutes time delay between compressor turning off and turning on.
Frost prevention of indoor coil of indoor unit when the system is operating in cool mode at low
ambient temperature with excessive dirt on the indoor coil and / or clogged air filters.
Complete Self-diagnostic function to detect malfunctions.
When the system is on and in a malfunction, the malfunction will be detected through leds
located on the indoor unit display. Leds status refer to malfunction reason.
2.2 Safety protections of Heating operation
Auto restart Feature with backup memory.
When the power failure is happened during system operation, the micom of printed circuit board
will memorize the operation setting. After the power is recovered, the system operates
automatically ( without remote control ) after compressor time delay, according to the previous
operation settings.
3 (Three) minutes time delay between compressor turning off and turning on.
Frost prevention of indoor coil of indoor unit when the system is operating in cool mode at low
ambient temperature with excessive dirt on the indoor coil and / or clogged air filters.
Cold draft protection when the system is operating in heat mode to prevent cold air from blowing
into the space to be air-conditioned and also to speed up the heating.
Defrost protection of outdoor coil of outdoor unit when the system is operating in heat mode at
very low ambient temperatures.
High temperature protection of indoor coil of indoor unit when the system is operating in heat
mode at high ambient temperature.
Complete Self-diagnostic function to detect malfunctions.
When the system is on and in a malfunction, the malfunction will be detected through leds
located on the indoor unit display. Leds status refer to malfunction reason.

(3)
3.TIPS OF ENERGY SAVING AND OPTIMUM COMFORT
In Summer
•Keep room temperature to comfort levels.
•Don’t remain in direct contact
with cold air for a long period.
This is harmful to health.
•Don’t wait until it is too hot.
Turn the air conditioner for cooling before
that.
•Don’t exaggerate on the temperature
intensity, too cold.
Extreme temperatures are harmful to your
health and waste energy.
COOL mode HEAT mode
In Winter
•Keep room temperature to comfort levels.
•Don’t remain in direct contact
with warm air for a long period.
This is harmful to health.
•Don’t wait until it is too cold.
Turn the air conditioner for heating before
that.
•Don’t exaggerate on the temperature
intensity, too hot.
Extreme temperatures are harmful to your
health and waste energy.
Use ECO function during sleep for energy
saving, comfortable and healthy sleep during
COOL mode or HEAT mode.
COOL mode HEAT mode

(4)
4. SPLIT SYSTEM DESCRIPTION
1: Air outlet 2: Display panel
3: Air flow louver ( at air outlet ) 4: Air-in grill
5: Air filter ( inside air-in grill ) 6: Air inlet
7: Refrigerant piping lines and electrical cables
8: Condensate drain line.
9: Drain pipe 10: Flare valves
11: Remote control signal receiver 12: Bracket of remote control
7
8
10 Outdoor Unit
2
11
1
3
8
5 4
6
9
12
Indoor Unit

(5)
5. CONSIDERATIONS FOR REMOTE CONTROL
5-1 HOW TO INSERT BATTERIES :
(a) Remove the cover of battery
compartment at the back of the
remote control by pressing the
tab toward outside, in the
direction of the arrow.
(c) Press the button (at the front of remote
control) with an object not sharp to operate
the remote control.
(b) Mount two batteries size
AAA 1.5 Volt supplied
with the remote control.
Then close the cover of the
battery component.
Note:
During mounting of batteries
check battery symbols (+, -)
indicated in batteries
compartment.
NOTES
1. The remote control uses two alkaline batteries (1.5 Volts) .
2. Do not use old batteries or batteries of different types, as this may cause the remote control to malfunction.
3. If you do not use the remote control for more than a few weeks, please remove the batteries.
Other wise battery leakage may damage the remote control.
4. The average battery life during normal use is approximately half a year.
5. Replace the batteries when there is no receiving beep coming from the indoor unit or transmission indicator
on the remote control fails to light.
6. Batteries should only be replaced after turning OFF the air conditioner.
5-2 INSTRUCTIONS OF USING WIRELESS REMOTE CONTROL
1- The remote control must be directed toward the receiver of indoor unit when pressing the buttons
of the desired functions. An acoustical acknowledgement sound (beep) will indicate that signal has been received.
2- Avoid direct sunlight on the receiver of indoor unit, which may interfere with good signal reception
and the air conditioner may not work properly. Draw the curtains to avoid direct sunlight.
3- Avoid obstacles obstructions such as curtains, doors or other materials between the remote control
and the receiver of indoor unit to avoid blocking the signals from the remote control to the indoor unit.
4- The maximum operating distance for the remote control is approximately 8 meters.
5- Keep the remote control away from water. Do not let the remote control fall down.
6- Never use objects with sharp point to press the button on the remote control.
7- Prevent any liquid from falling into the remote control.
8- If other electric applications react to the remote control, move these applications.

(6)
6. USE OF REMOTE CONTROL
CLOCK ADJUSTING FUNCTION
Initial Setting or the Clock
When batteries are inserted in the remote control, the clock panel will display ‘’12:00’’
and being to flash.
Setting the clock
Before you start operating the air conditioner, set the clock of the remote control
using the procedures given in this section.
The clock display on the remote controller will show the time regardless of whether
the air conditioner is in use or not.
1. With the remote control ON or OFF,
Press CLOCK for about 3 seconds, the clock time display will start to flash.
2. TEMP. button
•Press this button to set time.
Forward
Backward
•Each time you press the button, the time moves forward or backward by one minute
depending on which side you press.
The time alters as quickly as you press the button.
•Keep pressing the button without releasing, the time moves forward or backward by
10 minutes depending on which side you press.
3. OK button
When the right time is achieved, press the CLOCK button or release the or
and wait for 3 seconds, the clock time stops flashing and the clock starts
4. Readjusting the Clock
Press the CLOCK button on the remote controller
for about 3 seconds, the time of the clock display
will start to flash. To set the new time, follow 1 and 2
of "Initial Setting of the Clock".
NOTES
* The clock time must be set before operating TIME functions.
* The clock time cannot be adjusted during TIME operation.
* Clock accuracy is within 15 seconds per day.
CAUTIONS
Static electricity or other factors (voltage transients )
can cause remote controller clock initialise.
If your remote controller is initialised
readjust the clock before you start operation.
2
2
1
3

(7)
USE OF REMOTE CONTROL (Cont.)
COOL MODE
START
1. Press MODE button to select COOL mode
on the remote control display.
2. Press TEMP buttons or to select the
set temperature on the remote control display.
Set desired temp. between 17°C and 30°C.
3. Press FAN SPEED button to select
the desired fan speed on the remote
control display.
4. Press ON/OFF button to start
the air conditioner.
ON symbol appears on the
remote control display.
OPERATION indicator will illuminate
on the display panel of indoor unit.
COOL mode starts after approximately 3 minutes.
STOP
If you want to stop the air conditioner,
Press ON/OFF button again.
NOTES
•If the room temperature is higher than
the selected temperature, the system will start COOL mode.
•If the room temperature is equal to or less than
the selected temperature, the system will stop COOL mode.
•If you use AUTO fan speed with COOL mode, the fan speed
changes automatically to low or medium or high speed
based on the temperature difference between setting
temperature and room temperature.
4
2
1 3
2