OWNER’S MANUAL
42XQ/XQA
®
UNDERCEILING
CONSOLE
42XQ 42XQA
42XQ : Cooling only direct expansion Fan Coil Unit (Wireless Control)
42XQA : Cooling only direct expansion Fan Coil Unit (Wired Control)
Thank you for choosing Carrier!
You can be sure that you’ve made a wise choice, because the same
pride we take in manufacturing the Carrier equipment installed in the
Astrodome in Texas, in the Sistine Chapel, in the Capitol – the seat of
the US Congress – and in thousands of other installations worldwide,
is embodied in the design of the unit you have just purchased.
One of the greatest benefits to await you when using your air conditioner
is that, in addition to maintaining a pleasant temperature in the area
where it is installed, the ambient air is also filtered and dehumidified,
thus improving the quality of the air you breathe.
This manual has been created to familiarize you with all of the
technological features and benefits which this air conditioner unit can
offer.
This manual also contains important information regarding the
maintenance of your new air conditioner, servicing the unit and, above
all, running it in an economical way . Set aside a few minutes to carefully
read through the contents of this manual and learn to optimize the use
of your new Carrier device in terms of personal comfort and economy
of operation.
CONTENTS
PRECAUTIONS.................................................................................................. 3
Safety considerations 3
DISPLAYS OF THE INDOOR UNIT, LED INDICATORS & CONTROLS............ 6
Error codes 6
Emergency operation 7
REMOTE CONTROL.......................................................................................... 8
Using the selected functions 10
Using the wireless remote control 11
Using the wired remote control 17
Setting the operating mode 19
INFORMATION ABOUT FILTERS.................................................................... 21
CARE AND MAINTENANCE............................................................................ 22
Operating conditions 22
Operation during power outages 22
PRACTICAL TIPS............................................................................................. 23
Cleaning the Indoor Unit 24
Cleaning the Outdoor Unit 24
Cleaning the filters 25
PRECAUTIONS
Safety considerations
The installation, servicing and maintenance
of air conditioning equipment may be
hazardous due to the pressure which the
refrigerant gas exerts on the interior, and
its electrical components. Only specialized
and professionally qualified personnel may
install, repair or perform servicing work on
air conditioning equipment. Non-specialized
people may only perform basic
maintenance work such as: cleaning the
coils and cleaning and/or replacing the
filters.
All other types of maintenance work may
only be performed by specialized
personnel. To perform such work, the
installer must follow the safety standards
applicable, and must wear safety goggles,
clothing and gloves suitable for this
purpose. Appropriate protection must be
used during welding work; a fire
extinguisher must always be kept close to
hand.
For your safety, read these instructions
through carefully and respect all of the
labels marked WARNING below.
WARNING
WARNING or CAUTION contained in this
manual or attached to the housing of the
unit.
Consult your local regulations applicable
with respect to electrical installations for
special requirements.
Recognize the safety information
The symbol “ ” indicates a safety alert.
When you see this symbol, it is because
there is a potential risk of material damage
or personal injury . Understand the meaning
of the words DANGER, WARNING AND
CAUTION. These words are used in
conjunction with the alert symbol.
DANGER means situations with a severe
risk to injury to people, including the risk of
death. The word WARNING means
situations which could result in personal
injury, including death. The word CAUTION
indicates unsafe practices which could
result in minor personal injury or material
damage.
• Do not attempt to interconnect units
from different manufacturers without
first consulting your Carrier
representative or an engineer
specializing in air conditioning. The
incompatibility between the indoor
and outdoor unit and its control
devices could cause serious problems
for both units and invalidate the
manufacturers’ warranty coverage.
Carrier accepts no liability and will
cancel the product warranty if these
installation instructions are not
followed as indicated, or if the wiring
is changed. Consult your preferred
Carrier representative for further
details.
3
• Before installing, modifying or performing
servicing work on the system, check
that the electrical power supply to the
unit has been switched off. Check that
there is not more than one power
switch. Check and label each switch
present with the appropriate wording.
Electric shocks can cause personal
injury, and even death. If the power
supply cable is damaged, it must be
replaced only with an authorized
Carrier spare part by its network of
authorized dealers.
CAUTION
DISCONNECTING THE UNIT FROM
THE MAIN POWER SUPPLY
These units must be connected to the
main electrical power supply through a
circuit-breaker or switch fuse with an
appropriate capacity and with a minimum
separation between the contacts of 3mm.
If this is not possible, a contact/container
combination equipped with an active
earth wire must be used. The contact
must have easy access after installation.
The contact must be disconnected from
the receptacle to ensure that no electrical
power gets to the unit. It is vitally
important to follow the safety standards
in force at the connection location and
also to check that the electrical power
supply is actively equipped with an earth
cable.
1) Do not spray flammable aerosols near
to the unit. The unit may be damaged if it
comes into contact with gasoline, solvents,
benzene, insecticides or other chemical
substances.
2) T o prevent electric shocks, never splash
water into either the indoor or outdoor
units.
WARNING
Do not attempt to disconnect the unit
at the main power switch. Always use
the unit’s control when you want to
disconnect the system.
3) Do not insert your hands or fingers, or place
objects inside the air discharge grille of the
outdoor unit, because the fan rotates at
very high speeds, which may cause
serious personal injury.
4
4) Use only a circuit-breaker with a suitable
capacity.
Keep the unit away from heat sources.
High temperatures may cause physical
damage to the unit.
5) Do not obstruct the air discharge of any
of the indoor and outdoor unit. Doing
so, blocks the airflow, reducing the
cooling capacity and causing the unit
to malfunction.
6) The manufacturer accepts no liability in the
event of damage caused by: mistakes
or changes when establishing the
electrical connections or refrigerant gas
connections, during installation or due to
the inappropriate use of the equipment.
Failure to observe these instructions will
immediately invalidate the warranty of
your unit.
This unit will only operate correctly if it is
installed and tested by personnel
professionally qualified and trained for
such work.
7) In summer, prevent sunlight from entering
the air-conditioned area as far as
possible. You can do this by using
curtains or blinds on the windows.
8) Use the voltage indicated on the unit’s
data plate. Using a voltage different from
the specified voltage may cause very
serious damage to the unit.
5
DISPLAYS OF THE INDOOR UNIT,
LED INDICATORS AND CONTROLS
T : EMERGENCY and RESET button
S : Receiver of remote control signal
P : Green LED
R : Yellow LED
Q : Red LED
Indoor Unit LEDs
Information about the operating mode of the
indoor unit is given by the 3 LEDs
(light-emitting diodes) on the unit.
THE GREEN LED (P) indicates the
followings:
• Error diagnosis.
• During normal operation, the LED is
illuminated.
ERROR CODE DESCRIPTION
3 Ambient temperature sensor error
4 Indoor unit coil sensor error
7 Outdoor unit error
10 EEPROM malfunction
11 Corrupted serial number
12 Incomplete address/zone information
13 Gas flow distribution error
NOTE
• When the unit is disconnected or in
Standby mode (waiting), the LED
remains switched off. If a breakdown
occurs, the LED flashes at 5-second
intervals. The error code is shown by
the number of times the LED flashes.
A pause of 5 seconds occurs between
the luminous signal cycles.
6
THE RED LED (Q) indicates the following
information
• During normal operation, the LED is
switched off.
• During defrosting, the LED is
illuminated.
• During the testing of the electrical
connections, the LED flashes at 1
second intervals.
THE YELLOW LED (R) indicates that the
unit is operating in timer mode. During this
operating mode, the LED is illuminated. If
timer mode is active and the unit is reset
immediately after a stop, this LED flashes
after receiving a new signal from the unit.
NOTE
• Positioning of the selector key: the
units leave the factory configured for
the underceiling position.
CONSOLE : Position 1
UNDERCEILING : Position 0
If in doubt, refer the Installation and
Start-up Instructions’ Manual.
“EMERGENCY button” (T)
This may be used when the remote control
is not working or has been lost.
Emergency Operation
When the unit is in OFF mode
(disconnected) and you press the
emergency button for 5 seconds, the unit
starts operating as follows:
• Automatic mode
• Temperature at 22
o
C
• Automatic fan speed
• The air deflectors are positioned
automatically according to the operating
mode – see note
• Timer deactivated during cleaning or
replacement of filter
NOTE
• According to the signal received via the
remote control, the unit starts operating
according to the command selected.
“RESET” (T)
This button must be pressed for one second
to revert to normal operation of the unit after
cleaning work or replacing the filter.
7
REMOTE CONTROL
The remote control works with 1.5 V
batteries. When the battery icon appears
on the display of the remote control, it’s time
to replace the old batteries.
Inserting the batteries
• Open the battery compartment on the
back of the remote control. To remove
the small cover, press down the small
tab in the direction indicated by the
arrow in the diagram.
• Remove the old batteries and insert new
ones. The remote control requires two
batteries (1.5V type AAA).
• Press the “o” button with a sharppointed object to reset the remote
control.
CAUTION
Before replacing the batteries, the device
must be disconnected.
NOTE
• The average life of the batteries under
normal conditions of use is
approximately one year.
• If the air conditioner does not function
as normal after the remote control
batteries have been replaced, remove
the batteries again, reinsert them and
press the “o” button again after 5
seconds.
8
NOTE
NOTE
• The maximum distance for the infrared
remote control to work properly is 5
metres.
• There must be no objects, for example,
curtains, obstructing the space
between the unit and the remote
control.
• Sunlight shinning directly onto the
signal reception area of the unit may
cause difficulties in receiving the
signal emitted by the remote control.
• The remote control must be pointed
towards the device’s signal reception
area when you press the desired
button.
• The electronic control system emits
an acoustic signal (beep) to confirm
the reception of the emitted
message.
Reading on the display or viewfinder
A. Operating mode selection button
B. ON/OFF button – Connect/
disconnect
C. Button for increasing the selected
temperature
D. Button for reducing the selected
temperature
E. Fan speed selection button
F. Customized control button
G. Customized selections button
H. Deflector control button
I. Button for connecting the timer (ON)
J. Button for the daily timer (DAILY)
K. Button for canceling the timer setting
L. Button for disconnecting the time
(OFF)
M. Button for setting the night operating
mode (SLEEP)
N. Button for setting the time
O. Reset button
9
USING THE SELECTED FUNCTIONS
1. Operating mode (from left to right):
• Ventilation (fan only)
• Cooling with dehumidification
• Dehumidification only
2. Signal transmission symbol
3. Temperature reading
4. “Address” selector
o
5. Temperature measuring unit (
C or oF)
6. Configuration of the unit
7. Low battery indicator
8. Position of the air deflector
9. Fan speed
10.Active customization
11.Timer ON selected
12.Night timer activated
13.Day timer activated
14.Timer ON, OFF and clock
15.Timer OFF selected
10
USING THE WIRELESS REMOTE CONTROL
Connect / Disconnect
(Key B)
When the air conditioner is disconnected,
the control display shows only the hour of
the day (if other icons are shown,
disconnect the control by pressing the
“ ” button).
Press the “ ” button to connect the unit.
All of the selected and saved functions light
up; the unit operates according to the
functions selected. Press the “ ” button
to disconnect the air conditioner. All of the
unit’s signals disappear and the control
display shows the current time only. If the
unit does not stop, connect the control (by
pressing the “ ” button) and repeat the
operation.
If the “ ” button is pressed immediately
after the disconnection of the unit, the unit
only starts operating again after 3 to 5
minutes due to the protection against the
frequency cycle of the compressor.
The unit only emits the BEEP acoustic
signal when the orders have been received
correctly.
Indicated symbol
Ventilation (fan only)
Cooling with dehumidification
Dehumidification only
Setting the desired temperature
<
Increase
(Key C)
Decrease
<
(Key D)
<
By pressing the buttons “ ” and “ ” ,
you increase or decrease the desired
ambient temperature. With each touch of
the button, the unit emits the confirmatory
BEEP acoustic signal and the selected
temperature appears on the display.
<
Select the Operating Mode
(Key A)
The operating mode of the air conditioner
can be selected with this button.
By pressing this button repeatedly, the
available operating modes are selected
sequentially. The unit recognizes the signal
received with a confirmation BEEP and the
operating mode selected is indicated as
follows:
11
The selected temperature may be between
o
C (63oF) and 32oC (90oF) at 1-degree
17
intervals.
NOTE
• In cooling mode, if the temperature
selected is higher than the ambient
temperature, the unit will not start
operating.
Selecting the airflow direction
(Key H)
Selecting the fan speed
(Key E)
The deflector direction must be set so as
to optimize the ambient airflow distribution.
Press the button until one of the
following positions is displayed:
Icons appearing on the display
The airflow direction is adjusted
automatically. The deflector will
remain in the pre-selected position,
according to the operating mode.
6 different airflow directions
may be selected.
The deflector will continue to swing
downwards and upwards. The
“Swing” option guarantees an
effective and uniform distribution of
ambient air at all times.
The fan speed can be selected by pressing
the button with the icon.
Indicated symbol
Low speed
(for night operation)
Medium speed
High speed (from when the unit
is turned on until the desired
temperature is reached)
Automatic (the fan speed
changes automatically to the
value providing the best possible
comfort)
Programming the Timer
to start (ON)
NOTE
• In COOLING, DE-HUMIDIFICATION
and VENTILA TION modes, the deflector
swings to the COOLING option.
1. Timer ON button (Button I)
Press this button even if the remote
control is turned off. The relevant icon
and the picture of the clock start
flashing. If you do not press a button
for 10 seconds, the remote control
switches itself off (it was already
switched off when the button was
pressed), or the timer function is
automatically deactivated.
12
2. HOUR and MINUTES buttons
<
( and buttons)
<
If the unit is connected, the only possible
selection is the time of starting
operation. The unit operates with the
selections shown on the display.
3. HOUR and MINUTES buttons
<
( and buttons)
<
If the unit is disconnected: select the
operating start hour and use the
temperature control buttons ( and
buttons).
First select the hour and then confirm
by pressing the button . Then select
the minutes using the buttons and .
To set the clock permanently, press
button again.
4. Operating mode
Select the operating mode of the unit.
The icons begin to flash. To select the
mode, use the button. After selecting
the mode, press the button. The
icon of the selected mode starts
flashing.
7. Positioning the air deflector
This icon now flashes. Use button to
select the desired position.
Press button to confirm. Now all of
the icons are fixed on the display . If you
want to cancel the selections made up
to now, press button X; if you want to
cancel the selections since the timer was
set, press button and then button X.
<
<
Programming the Time to stop (OFF)
<
<
5. Desired temperature
To select the desired temperature (the
value will be flashing), use the or
buttons. Press button to confirm
<
the selection. The numbers stop
flashing.
6. Fan speed
Select the fan speed using the button.
After making your selection, press
button to confirm. The icon stops
flashing.
13
1. TIMER OFF button
<
(Button L)
Press button .
The timer OFF icon and the hour
selection numbers start flashing.
This function may be selected even with
the remote control disconnected.
2. HOUR and MINUTES selection buttons
<
( and buttons)
To select the clock, press the and .
<
<
<
To toggle between hours and minutes,
press button .
Press button again to confirm.
Customization and
(Button G and F)
Daily timer
(DAILY - button J)
If you want to save a customized operating
mode which you can reactive at any time,
complete the following steps:
1. With the remote control connected or
disconnected, press button and keep
it pressed down for more than 5
seconds. The customization icon
starts flashing on the display.
2. Press button to select the operating
mode.
3. Press button and to select the desired
<
<
temperature.
4. Use button to select the fan speed.
5. Use button to select the deflectors’
position.
6. After entering all the selected options,
press button to save them.
NOTE
• After this procedure, all of the selected
and saved functions will be able to be
activated using button , regardless
of the operating mode of the unit.
Press button when timer ON or OFF is
active. The icon appears on the display. In
this way, the saving of the timer ON and
OFF is repeated daily. To deactivate the
daily function, press button again.
Combining the TIMER ON, OFF and
DAILY programming
If you want the unit to start operating at
5:30pm and stop operating at 10:30pm,
proceed as follows:
1. Select timer ON for 5:30pm
2. Select timer OFF for 10:30pm
3. Select the desired operating mode
(button )
If you want to stop the unit at 10:30pm and
restart at 7:30am with the same operating
mode, proceed as follows:
1. Select timer OFF for 10:30pm during
operation
After entering customized mode, press one
of the buttons: , , , or to exit.
<
<
If you want to change one or more saved
settings, return to point 1 and restart the
setting procedure.
2. Select timer ON for 7:30am
14
If you want the daily operating mode to start
at 5:30pm and stop at 10:30pm, proceed
as follows:
1. Select timer ON for 5:30pm
2. Select timer OFF for 10:30pm
3. Press the button of the daily operating
mode (Button )
Programming the night timer
(SLEEP - button )
Press this button to set the night timer
(SLEEP) with the remote control connected.
The icon appears on the display. This
procedure allows you to set the remaining
operating time of the unit.
1. “1:hr” appears on the display, together
with the icon.
Canceling the ON, OFF and DAILY
TIMER programming
1. If you want to cancel the selection of
ON or OFF timer, press the buttons,
following this sequence:
• Button or
• Button X
To deactivate the daily operating mode
function, press button
NOTE
• The daily operation function will remain
active until one of the two timers (ON or
OFF) is activated.
2. Press button .
The display shows
the following
selections in the
sequence:
1 hr, 2 hr , 3 hr , 4 hr , 5 hr,
6 hr, 7 hr , 8 hr and 9 hr
3. Once you have selected - using the
buttons or - the remaining operating
<
<
hours, press button again to confirm.
4. After the night timer has been set, the
unit will check the selected temperature
to prevent excessive cooling during
operation.
Buttons for setting the time and
resetting
(Button N and O)
Press the clock setting button to adjust
the real time. Press the button “o” with a
sharp-pointed object, if the remote control
is not working properly or after replacing
the batteries.
<
15
Setting the hour
(Button N)
CAUTION !!!
1. With the remote control
connected or disconnected,
press button .
2. The numbers of the hour
start flashing. Press button
<
<
or to set the desired
hour.
Press button to switch to
the minutes, in order to set
them.
3. To make this selection,
always use buttons or .
<
<
4. After setting the hour, press
button to confirm.
NOTE
“Address” Selector
• If there are two indoor units in the
same room, you can connect one
remote control to one indoor unit and
the other remote control to the other
unit, or you can control both units
using just one remote control.
The air conditioner will not work if there are
curtains, doors or other objects blocking the
signal sent from the remote control to the
unit.
If the infrared signal receiver of the indoor
unit is directly exposed to the sun’s rays,
the equipment will not function properly.
Block the incidence of sunlight until the
exposure has been eliminated.
Together with the remote control, you will
receive a mounting support to put it inside.
Attached the support to the wall.
• For the configuration, consult the
Installation & Start-up Instruction’s
Manual.
NOTE
• Always use the remote control to set the
position of the air deflectors; otherwise
operational anomalies may result.
Disconnect the unit and reconnect it
when manually setting the grid outside
of the range.
16
Control to the left and right
Specifications
If you want to set the direction of the air to
the right or left, adjust the deflector by hand
after opening the horizontal deflector.
NOTE
• DO NOT adjust the deflector by hand
if the unit is operating in SWING
mode, since this may damage the air
oscillation mechanism.
WIRED REMOTE CONTROL
General Information and Specifications
• Operating Modes:
Off (disconnected), Cool (cooling),
Dry (dehumidification), and Fan only
(ventilation).
• Fan Speeds: Low, Medium, High and
Auto.
• Deflector temperature: Between 17
and 32
o
C (63oF and 90oF).
o
• Cancellation of temperature sensor of
unit: Allows you to use the air sensor
located on the remote control instead
of the sensor located inside the unit.
• Diagnostics: Detects errors in the remote
control air sensor.
The code “A1” shown on the display
indicates this anomaly.
“UP” and “DOWN”
buttons
(up)
(down)
Buttons for increasing or
decreasing the temperature
or selecting the air
deflector modes “AUTO”
or “SWINGING”.
C
A = Reading on the display
B = Increase temperature / change the air
deflector setting button
C = Decrease temperature / change the
air deflector setting button
D =Fan speed selection button
E = Operating mode selection button
17
MODE FAN
MODE
Operating mode selection
button.
FAN
Air deflector or fan
selection button.
Display the selected functions
1. Disconnected
2. Selected temperature/ambient
temperature
Control Powered Up
All of the segments of the Remote Control
Display must be powered up for five
seconds. Information about the operating
mode, fan speed, desired temperature and
configuration must be read from the
Microprocessor inside the Remote Control.
If the EEPROM values are not valid, the
following must be used by default.
Example of normal operation
3. Set temperature
4. Deflector operating position
5. Fan speed
6. Cooling
7. Dehumidification only
Operating Mode = AUTO
Fan Speed = AUTO
Desired Temperature = 22
o
F or oC=C
Deflector (louver) = AUTO
Cancellation of the Ambient Thermistor = OFF
Cooling Only = Cool
When connected, the control display
appears.
o
C
18
SETTING THE OPERATING MODE
COOL and DRY modes
“MODE” button
MODE
FAN
Pressing the “MODE” button causes the
operating mode to change. The “MODE”
button must be released and then pressed
again to switch to the next mode. The active
mode will always be displayed in normal
operation.
NOTE
• If the “MODE” button is not pressed for
15 seconds, the next command
always changes the mode to OFF.
The available operating modes to select
from are:
Remote Cooling Only
OFF (disconnected)
COOL (Cooling)
• ICON of the Operating Mode.
• Ambient Temperature: if configured by
canceling the temperature sensor of the
ambient environment unit (operated by
the environment controller); otherwise
the temperature is selected by the user
with the “SET TEMP” icon.
• FAN/LOUVRE icon with the Fan and
Louver settings – air deflector – selected
by the user.
Available Buttons
• All the Buttons are available.
DRY
Dehumidification Operation
COOL
Cooling Operation
DRY (dehumidification)
FAN ONLY (ventilation)
OFF Mode
• OFF mode
• Ambient Temperature: if configured by
canceling the ambient environment
sensor. Otherwise none.
Available Buttons
• “MODE” button
19
FAN ONLY mode
“FAN” button
FAN ONLY
Operation with fan ventilation only
(up)
“UP” and “DOWN”
(down)
buttons
Selecting the desired temperature
NOTE
• Press the buttons “UP” - hotter, or
“DOWN” - colder, to change the
temperature.
• The maximum temperature of the
device is 32
minimum temperature is 17
o
C (90oF) and the
o
C (63oF).
Setting the fan speed.
When the “FAN” button is pressed, the fan
speed is changed.
To reach the desired speed, the “FAN”
speed button must be pressed and then
released.
Low, Medium,
High or Auto.
The icon on the display shows that a
change has occurred.
NOTE
• The setting of the AUTO mode is
shown by the flashing of the medium
and High speed icons of the fan.
Low
Medium
Whenever the set point is being displayed,
the “SET TEMP” icon is illuminated.
Whenever the display mode changes from
o
F to oC, the setpoint is set to the default
start-up values of 22
o
72
F for “oF” mode.
o
C for “oC” mode and
If the air sensor embedded in the remote
control is activated, the display shows the
ambient temperature after a few seconds.
High
Auto (automatic)
The fan speed changes
automatically from the
requested value to an ideal
temperature. When this
function is activated, the
dotted symbols flash.
20
Air Deflector Control
Information about Filters
• Keep the “FAN” button pressed down
for 5 seconds.
• The selected air deflector setting is
displayed.
• By pressing the “UP” and “DOWN”
buttons, you can change the desired
configuration of the air deflector.
The two settings will be displayed as
follows:
AUTO
Automatic positioning of air
deflector to the best position for
the selected operating mode.
SWING (oscillation)
The deflector swings continuously.
• Press the “FAN” button to exit air
deflector control selection mode.
• This mode will exit automatically after
no button has been pressed for 10
seconds.
• The only way to change the operating
mode is by returning to this menu.
• Air Filters (optional)
- Option 1: Electrostatic Filter +
Activated Carbon Filter.
- Option 2 : Electrostatic Filter +
Photocatalyzer Filter.
• The air filters trap dust and small
particles.
• The optional combination Electrostatic
Filter + Photocatalyzer Filter traps
microscopic dust particles and cigarette
smoke in the air-conditioned area.
Electrostatic Filter
+
Activated Carbon
Filter
Electrostatic
Filter
+
Photocatalyzer
Filter
Filter Life Cycle
• The useful life of the filters described
above varies according to the quantity
of cigarette smoke, the size of the airconditioned area and the operating time.
• The air filters may be cleaned with a
vacuum cleaner or rinsed with a water
jet after one month of use.
• The useful lifetime of the optional
activated carbon filters is approximately
2 years and the useful lifetime of the
electrostatic filters is around 3 months.
The activated carbon filters may be
washed with a neutral detergent, rinsed
with water and left to dry in the sun.
• The useful lifetime of the Photocatalyzer
filters is approximately 2 years. This
type of filter may be washed under
running water and reactivated with
direct exposure to the sun’s rays. The
exposure time is 6 hours after 3 months’
of use.
21
CARE AND MAINTENANCE
Operating Conditions
The temperature ranges compatible with
the unit are as follows:
MODE INDOORS OUTDOORS
COOLING 21~32oC 21~46oC
DEHUMIDIFICATION 17~32oC 12~46oC
• When the unit is operating below or
above these conditions for an extended
period of time, the diagnostics system
will detect a malfunction and the unit will
not function properly.
• If the unit is operating under abnormal
conditions for an extended period of
time, or under extreme humidity,
condensation may be formed inside the
unit.
Minimum Operating Time
• In normal operations, there is a minimum
of 3 minutes between each shutdown
and startup of the compressor.
WARNING !!!
Operation in the event of power outages
• When an electrical power outage occurs
and the unit is in operation, the
operating conditions are saved and
restored automatically when the
electricity returns.
Prevention of freezing in the indoor unit
• When the unit is operating in conditions
of low ambient temperature, ice may
appear on the coil of the indoor unit.
When the temperature of the indoor coil
is below zero degrees Celsius, the
electronic control will cause the
compressor to disconnect to protect the
freezing unit.
Normal Operation
Some of these events may occur during
normal operation:
• A “warbling” sound during operation or
when the unit stops – This is the sound
of the refrigerant gas flowing through the
unit.
• Bad odors coming from the unit – Smoke
or cosmetic odors which have
accumulated while the room air was
circulating through the unit.
• The green light on the indoor unit
flashes and there is no ventilation.
- Indicates a malfunction of the unit, and
the compressor will stop operating.
• A loud noise can sometimes be heard
while the unit is operating or when the
unit is switched on - this is the sound of
the plastic expanding due to rapid
changes in temperature.
• The programming of the TIMER will be
lost.
• On leaving your house during a power
outage, disconnect the indoor unit to
prevent it from switching itself on
automatically when the power returns.
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PRACTICAL TIPS
Optimal comfort with low consumption
• Ensure that you maintain the temperature
of your house within the comfort zone.
• When the unit is operating in cooling
mode, prevent sunlight from entering
the house. Whenever possible, close
the curtains or lower the blinds.
• Do not cover the front of the unit or
obstruct the air intake or discharge. An
obstruction may cause a reduction in the
air quantity and reduce the efficiency of
the equipment, which may lead to a
malfunction.
If you know that your air conditioner will
not be used for an extended period of
time:
• Wash and dry the filters and replace
them in the unit.
• Make the unit operate in ventilation only
for at least half a day to dry the inside
completely.
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• Disconnect the main power supply switch.
• Remove the remote control batteries.
• Clean the indoor unit and the outdoor
unit.
Cleaning the Indoor Unit
Cleaning the outdoor Unit
• Always disconnect the main power
supply before unit performing any
cleaning work.
• Only use a clean damp cloth and soap.
• Do not spill any liquids on the unit.
• Do not use flammable products, solvents
or detergents containing abrasives:
these may damage the surface coating
of the unit.
• Avoid any contact with heat sources,
since hot air may damage the surface
coating of the unit.
• From time to time, clean the area
around the outdoor unit and remove the
waste that may have accumulated and
could cause a reduction in air circulation.
• The remote control may only be cleaned
with a clean cloth.
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PRACTICAL TIPS
Maintenance and User Guide
Cleaning the Filters
A -
B -
Cleaning washable cloth filters
T o determine how often these filters should
be washed, you should take 1 month of
operation as the basic length of time
between washings.
• The cloth filters must be washed with
water only.
A - Photocatalyzer filters + Electrostatic
filters (optional)
B - Washable cloth filters
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• Remove the filters.
• First clean the filters with a vacuum
cleaner; then wash them under running
water and dry them off.
• Replace the filters in their correct position.
Photocatalyzer Filters
Installer’s Guide
After finishing the installation and testing,
explain the main points of this Manual to
the user, giving special attention to the main
operating modes of the air-conditioning
equipment as stated below:
• How to switch the unit on and off.
• How to change the operating mode.
• How to select the temperature.
• Clean these filters once every three
months. Wash them with water and
leave them to dry in the sun for two or
three hours.
• Replace these filters after every five
years approximately.
Maintenance
After the unit has been shut down for an
extended period of time and before starting
it up again, perform the following:
• Inspect and clean the outdoor unit,
especially the coil.
• Clean and replace the indoor unit’s filters.
• Check and clean the condensate tray
of the indoor unit.
• Do the same with the outdoor units on
the models which possess a heat pump.
• Check the sockets of the electrical
connections.
• How to adjust the air direction deflectors
to optimize the air current direction.
Leave the Installation & Start-up
Instruction’s manual and the Maintenance
manual of the indoor and outdoor units with
the owner, to be referred to in future during
any maintenance operation.
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WARNING
DO NOT SWITCH ON/OFF FROM MAIN POWER
ISOLATING SWITCH OR WALL MOUNTED CONTACTOR.
USE ONLY SWITCHES ON WIRELESS OR WIRED
REMOTE CONTROL TO AVOID DAMAGE
TO OUTDOOR COMPRESSOR.
Carrier
International
Sdn. Bhd.
®
Malaysia
Carrier International Sdn. Bhd. (3385-T)
Lot 4, Jalan P/6, 43650 Bandar Baru Bangi,
Selangor, Malaysia.
Tel: 03-8925 8001
Fax: 03-8925 3578
Parent Pt No.: 42XQ-402-001
OM Pt No.: 42XQ-502-002
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Printed in Malaysia
NEW 42XQ
09
Manufacturer reserves the right to discontinue, or
change at any time, specifications or designs
without notice and without incurring obligations.
2005
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