Carrier 53QDMT 12 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
220-240V ~ 50Hz 1Ph
380-420V ~ 50Hz 3Ph
R
2
2
Medium Static Pressure
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.
03502787
Slim Line
Ceiling Concealed Ducted Split Systems
53QDMT 12-18-24-30-36-42-48-60
Heat Pump

Medium Static Pressure
220-240V ~ 50Hz 1Ph
380-420V ~ 50Hz 3Ph
R
2
2
Slim Line
Ceiling Concealed Ducted Split Systems
12K - 18K - 24K - 30K - 36K - 42K - 48K - 60K
Tropical
Compressor
Medium Stat-
ic Pressures
40~100
Pa
Inner Groove
Copper Tubing
Efficient
Fans
Efficient
Coils
Defrost
Protection
3 Minutes
Time Delay
Anti-Freezing
Protection
3
Min.
High Temp.
Protection
High
Temp.
Protect
Anti
Freezing
Cold Draft
Protection
Optional
Drain Pump
Durability
Easy Installation
& Maintenance
Self diagnostic
function
Refrigerant
Leak Detection
Fresh
Air
Slim
Design
Efficient
Operation
Efficient
Anti-dust Filters
Display
Panel
$
IAQ
Wired
Control
Wireless
Control
Auto
Fan Speed
Auto
Super
Quiet
Hydrophilic
Aluminum Fins
Auto Restart
Function
Timer
Functions
Independent
Dehumidication
Auto
Mode
ECO
Function

Thank you for selecting Carrier
Air Conditioner
medium static pressure, ceiling concealed ducted
split is the optimum air conditioning solution for places which
require ceiling installation above false ceiling and minimum
sound levels. Its slim profile and flexible installation make this
system the best choice for residential and light commercial
applications where the units are practically hidden from view.
CONTENTS
PAGENO.
1. GENERAL INFORMATION 1
2. SYSTEM SAFETY PROTECTIONS 2
3. TIPS OF ENERGY SAVING AND OPTIMUM COMFORT LEVEL 3
4. SPLIT SYSTEM DESCRIPTION 5
5. DESCRIPTION OF DISPLAY PANEL 6
6. USE OF WIRED CONTROLLER 7
7. CONSIDERATIONS FOR REMOTE CONTROL 19
8. USE OF REMOTE CONTROL 20
9. AIR FILTERS CLEANING 33
10. INDOOR UNIT CLEANING 34
11. PERIODICAL CHECKS 35
12. CONSIDERATIONS BEFORE A LONG SHUTDOWN PERIOD OF AIR CONDITIONER 36
13. OPERATION TIPS 37
14. TROUBLE SHOOTING TIPS 38

(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 SAFETY PROTECTIONS
The air conditioner is equipped with complete safety protections to ensure safe
operation of air conditioner at different operating conditions :
Auto Restart Feature with backup memory.
When the power failure is happened during the air conditioner operation, the microprocessor
of printed circuit board will memorize the operation settings. After the power is recovered,
the air conditioner operates automatically ( without remote control after elapse of
compressor time delay).
3 (Three) minutes time delay between compressor turning off and turning on for compressor
protection against cycling.
Anti-freezing protection of indoor coil when the system is operating in cool mode with
excessive dirt on the indoor coil and / or clogged air filters and when the air conditioner is
operating in cool mode at low ambient temperature.
High temperature protection of outdoor coil when the air conditioner is operating in cool
mode.
Cold draft protection when the system is operating in heat mode.
When starting heat mode, the fan speed is regulated automatically from the lowest grade to
the present level, according to the temperature rise of indoor coil. This function can prevent
cold air blowing out at the beginning of heat modem which avoids the discomfort to the
user.
High temperature protection of indoor coil when the air conditioner is operating in heat
mode.
Defrost protection of outdoor coil when the air conditioner is operating in heat mode
at very low ambient temperature.
Smart self-diagnostic function for malfunctions detection for fast easy service and
maintenance.
Smart refrigerant leak detection by sensitive sensors mounted on the indoor and outdoor
coils for fast easy service and maintenance.

(3)
3.TIPS OF ENERGY SAVING AND OPTIMUM COMFORT LEVEL
Adjust economical setting temperature for cooling mode in summer for energy
saving and optimum comfort level.
•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.
Wireless Control Wired Control
Adjust economical setting temperature for heating mode in winter for energy saving
and optimum comfort level.
•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.
Wireless Control Wired Control

(4)
TIPS OF ENERGY SAVING AND OPTIMUM COMFORT LEVEL (Cont.)
Use SLEEP (ECO) function for during COOL model or HEAT mode economical running
and energy saving which automatically controls the selected temperature and
consequently control the room temperature to avoid overcooling or avoid overheating
and to have comfortable healthy sleep.
Cool Model HeatMode Cool Model HeatMode
Wireless Control Wired Control
Clean periodically air filters of indoor unit
every month to assure adequate air
circulation and maximum cooling and
heating efficiency.
Periodic service and maintenance of the
air conditioner or upon customer request
through Carrier or Carrier authorized
dealer to assure maximum cooling and
heating efficiency.

(5)
4. SPLIT SYSTEM DESCRIPTION
1: Air outlet
2: Air inlet
3: Air filter
4: Electric control cabinet
5: Drain hose
6: Inter-connecting refrigerant piping and electrical cables between indoor and
outdoor units.
7: Wired control
8 : Wireless remote control
Indoor Unit
7Outdoor Unit
1
2
3
4
5
6
8

(6)
5. DESCRIPTION OF DISPLAY PANEL
The display panel id indoor unit contains the following function indicators :
1 MANUAL Button
* This button is used to operate the unit temporarily in case you misplace
the remote control or its batteries are exhausted.
* Once you push temporary button, the air conditioner will run in such order :
Auto, Forced cool, off and back to Auto
AUTO
The OPERATION lamp is lit, and the air conditioner will run under AUTO mode.
The remote controller operation is enabled to operate according to the received signal.
FORCED COOL
The OPERATION lamp flashes, the air conditioner will turn to AUTO after it is enforced to cool
with a wind speed of HIGH for 30 minutes. The remote controller operation is disabled.
OFF
The OPERATION lamp goes off. The air conditioner is OFF while the remote controller operation
is enabled.
2 OPERATION green led
* OPERATION green led lights on when the air conditioner operates
* OPERATION green led lights off when the air conditioner stops
3 TIMER green led
* TIMER green led lights on when timer function operates
* TIMER green led lights off when timer function stops
4 DEF. / FAN red led
* This led lights on when defrost protection is activated and lights off
when defrost protection terminates in heat mode.
5 ALARM red led
ALARM red led flashes when there is a malfunction in outdoor unit
6 Infrared Signal Receive
r
( In case of using remote control )
7 Display Digital Tube
* This display shows error code in case of a malfunction.

(7)
6. USE OF WIRED CONTROLLER
CLOCK ADJUSTING FUNCTION
Initial Setting or the Clock
When the power supply is connected to wired controller,
Setting the clock
(1) Press CLOCK button for 4 seconds, then the hour part on the clock display
flashes every 0.5 second, then press Clock button again to adjust hours.
(2) Press clock button, then the minute's part flashes every 0.5 second, then press
clock button again to adjust minutes.
(3) When set clock or after clock setting, press OK button to confirm and complete
clock setting.
1 2

(8)
USE OF WIRED CONTROLLER (Cont.)
COOL MODE
START
1. Press MODE button to select mode
on the wired controller display.
2. Press TEMP buttons or
to select the set temperature on
the wired controller display.
Set desired temperature
between 17°C and 30°C.
3. Press FAN SPEED button to select
the desired fan speed on the
wired controller display.
4. Press ON/OFF button to start
the air conditioner.
OPERATION lamp on the
display panel will light on
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.
2
2
1 3
4

(9)
USE OF WIRED CONTROLLER (Cont.)
HEAT MODE
START
1. Press MODE button to select mode
on the wired controller display.
2. Press TEMP buttons or
to select the set temperature
on the wired controller display.
Set desired temperature
between 17°C and 30°C.
3. Press FAN SPEED button to select
the desired fan speed on the
wired controller display.
4. Press ON/OFF button to start
the air conditioner.
OPERATION lamp on the
display panel will light on
HEAT 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 lower than the selected temperature,
the system will start HEAT mode.
•If the room temperature is equal to or higher than the selected temperature,
the system will stop HEAT mode.
•If you use AUTO fan speed with HEAT mode, the fan speed changes
automatically to low or medium or high speed based on the temperature
difference between setting temperature and room temperature.
2
2
1 3
4

(10)
USE OF WIRED CONTROLLER (Cont.)
AUTO MODE
START
1. Press MODE button to select mode
on the wired controller display.
2. Press TEMP buttons or
to select the set temperature
on the wired controller display.
Set desired temperature
between 17°C to 30°C .
3. Press ON/OFF button to start
the air conditioner.
OPERATION lamp on the
display panel will light on
AUTO mode starts after
approximately 3 minutes.
STOP
If you want to stop the air conditioner,
Press ON/OFF button again.
NOTES
1. In the AUTO mode, the air conditioner can logically choose the
mode of Cooling, Fan only or Heating operation by sensing the difference between
the actual room temperature and the set temperature on the unit control panel.
2. In the AUTO mode, you cannot switch the fan speed. It has already been automatically controlled.
3. If the AUTO mode is not comfortable for you, the desired mode can be selected manually.
4. In AUTO mode, you can operate ECO function.
2
2
1
3

(11)
USE OF WIRED CONTROLLER (Cont.)
DRY MODE
START
1. Press MODE button to select mode
on the wired controller display.
2. Press TEMP buttons or ,
to select the set temperature
the wired controller display.
Set desired temperature
between 17°C to 30°C .
3. Press ON/OFF button to start
the air conditioner.
OPERATION lamp on the
display panel will light on
DRY mode starts after
approximately 3 minutes.
STOP
If you want to stop the air conditioner,
Press ON/OFF button again.
NOTES
•In DRY mode, you can not switch the indoor fan speed.
The indoor fan speed will be automatically selected AUTO.
•The DRY mode will automatically select the drying operation based on the
difference between the set temperature and the actual room temperature.
•The temperature is regulated while dehumidifying by repeating turning on
and off of the cooling operation or fan only.
•In DRY mode, you can not operate ECO function.
2
2
1
3

(12)
USE OF WIRED CONTROLLER (Cont.)
FAN ONLY MODE
START
1. Press MODE button to select mode
on the wired controller display.
2. Press FAN SPEED button to select
the desired fan speed on the
wired controller display.
3. Press ON/OFF button to start
the air conditioner.
OPERATION lamp on the
display panel will light on
FAN ONLY mode starts immediately.
STOP
If you want to stop the air conditioner,
Press ON/OFF button again.
NOTES
•In FAN mode, the unit will start immediately.
•In FAN mode, you can not change temperature.
The setting temperature is not displayed on
the control display.
•In FAN mode, you can not operate ECO function.
1
3
2

(13)
USE OF WIRED CONTROLLER (Cont.)
ECO Function
ECO function is useful when you go to sleep.
Carrier air conditioner automatically controls the selected temperature and consequently controls the
room temperature to avoid overcooling or overheating and to have comfortable and healthy sleep.
ECO function with COOL Mode
If you want to operate ECO function with Cool mode to save energy and maintain the most comfortable
temperature during COOL mode, apply the following steps :
Start:
Press ECO button to activate ECO function.
•The fan speed will automatically change to low speed.
•The set temperature will be automatically increased by 1°C
after 1 hour after COOL mode is selected.
•Then the set temperature will be automatically increased by
another 1°C after additional 1 hour.
•This new temperature will be maintained.
Stop:
If you want to cancel ECO function, Press ECO button again.
ECO function with HEAT Mode
If you want to operate ECO function with Heat mode to save energy and maintain the most comfortable
temperature during HEAT mode, apply the following steps :
Start:
Press ECO button to activate ECO function.
•The fan speed will automatically change to low speed.
•The set temperature will be automatically decreased by 1°C
after 1 hour after HEAT mode is selected.
•Then the set temperature will be automatically decreased by
another 1°C after additional 1 hour.
•This new temperature will be maintained.
Stop:
If you want to cancel ECO function, Press ECO button again.
NOTES:
1. ECO function is only available with COOL, HEAT and AUTO mode.
2. When activating ECO function in AUTO mode, the set temperature will be automatically increased by
1°C after AUTO mode is selected.
If it is under cooling mode, the temperature will decrease 1°C, if it is under heating mode, the set
temperature will be changeless.
ECO function with COOL mode
ECO function with HEAT mode

(14)
USE OF WIRED CONTROLLER (Cont.)
TIMER ON FUNCTION ( Off →Start Operation )
TIMER ON function is useful when you want to start automatically the air conditioner at a desired setting time
when you wake up in the morning or when you return home.
(1) Press TIMER ON button to set TIMER ON function, the wired controller displays
the icons of HOUR and ON display on the timer setting area.
(2) Press TIMER ON button again and then adjust setting time of TIMER ON function.
Each time you press the button, the time moves forward by 0.5 hour.
When the set time is over 10 hours, each time you press the button, the time move forward by 1 hour.
(3) 0.5 seconds later after setting the time for TIMER ON function, the wire controller
sends the information of timer on and the time on setting is completed.
TIMER indicator symbol TIMER will illuminate on the display panel of the indoor unit.
TO CHANGE TIME SETTING
If you want to change time setting, follow the above steps.
TO CANCEL TIMER ON FUNCTION
If you want to cancel TIMER ON setting, adjust the time of TIMER ON as 0.0

(15)
USE OF WIRED CONTROLLER (Cont.)
TIMER OFF FUNCTION ( On →Stop Operation )
TIMER OFF function is useful when you want to stop automatically the air conditioner at a desired setting time
after you go to bed.
(1) Press TIMER OFF button to set TIMER OFF function, the wired controller displays
the icons of HOUR and OFF display on the timer setting area.
(2) Press TIMER OFF button again and then adjust setting time of TIMER OFF function.
Each time you press the button, the time moves forward by 0.5 hour.
When the set time is over 10 hours, each time you press the button, the time move forward by 1 hour.
(3) 0.5 seconds later after setting the time for TIMER OFF function, the wire controller
sends the information of timer off and the time off setting is completed.
TIMER indicator symbol TIMER will illuminate on the display panel of the indoor unit.
TO CHANGE TIME SETTING
If you want to change time setting, follow the above steps.
TO CANCEL TIMER OFF FUNCTION
If you want to cancel TIMER OFF setting, adjust the time of TIMER OFF as 0.0

(16)
USE OF WIRED CONTROLLER (Cont.)
COMBINED TIMER ON →TIMER OFF FUNCTION
( Off →Start Operation →Stop Operation )
You can use this setting to automatically start operation of the air conditioner before you wake up
and automatically stop it after you leave the home.
(1) Press TIMER ON button to set TIMER ON function, the wired controller displays
the icons of HOUR and ON display on the timer setting area.
(2) Press TIMER ON button again and then adjust setting time of TIMER ON function.
Each time you press the button, the time moves forward by 0.5 hour.
When the set time is over 10 hours, each time you press the button, the time move forward by
1 hour.
(3) Press TIMER OFF button to set TIMER OFF function, the wired controller displays
the icons of HOUR and OFF display on the timer setting area.
(4) Press TIMER OFF button again and then adjust setting time of TIMER OFF function.
Each time you press the button, the time moves forward by 0.5 hour.
When the set time is over 10 hours, each time you press the button, the time move forward by
1 hour.
(5) 0.5 seconds later after setting the time for TIMER ON and TIMER OFF functions,
the wire controller sends the information of TIMER ON and TIMER OFF setting is completed.
TO CHANGE TIME SETTINGS
- If you want to change time setting, follow the above steps.
TO CANCEL TIMER ON / TIMER OFF FUNCTIONS
- If you want to cancel TIMER ON setting, then adjust the time of TIMER ON as 0.0
- If you want to cancel TIMER OFF setting, then adjust the time of TIMER OFF as 0.0

(17)
USE OF WIRED CONTROLLER (Cont.)
COMBINED TIMER OFF →TIMER ON FUNCTION
( On →Stop Operation →Start Operation )
You can use this setting to automatically stop the air conditioner after you go to sleep and start it
automatically again in the morning when you wake up or you return home.
(1) Press TIMER OFF button to set TIMER OFF function, the wired controller displays
the icons of HOUR and OFF display on the timer setting area.
(2) Press TIMER OFF button again and then adjust setting time of TIMER OFF function.
Each time you press the button, the time moves forward by 0.5 hour.
When the set time is over 10 hours, each time you press the button, the time move forward by 1 hour.
(3) Press TIMER ON button to set TIMER ON function, the wired controller displays
the icons of HOUR and ON display on the timer setting area.
(4) Press TIMER ON button again and then adjust setting time of TIMER ON function.
Each time you press the button, the time moves forward by 0.5 hour.
When the set time is over 10 hours, each time you press the button, the time move forward by 1 hour.
(5) 0.5 seconds later after setting the time for TIMER OFF and TIMER ON functions,
the wire controller sends the information of TIMER OFF and TIMER ON setting is completed.
TO CHANGE TIME SETTINGS
- If you want to change time setting, follow the above steps.
TO CANCEL TIMER OFF / TIMER ON FUNCTIONS
- If you want to cancel TIMER OFF setting, then adjust the time of TIMER OFF as 0.0
- If you want to cancel TIMER ON setting, then adjust the time of TIMER ON as 0.0