DLFSDA and DLFLDA
OWNERS MANUAL
Ducted Style Ductless System − Sizes 09 to 58
TABLE OF CONTENTS
PAGE
A NOTE ABOUT SAFETY 2...................................................................................
GENERAL 2.................................................................................................
P ARTS LIST 3................................................................................................
BUTTON FUNCTIONS 4.......................................................................................
CLEANING, MAINTENANCE, AND TROUBLESHOOTING 10.......................................................
NOTE TO EQUIP MENT OWNER:
Please read this Owner’s Information Manual carefully before installing and using this appliance
and keep this manual for future reference.
For your convenience, please record the model and serial numbers of your new equipment in the
spaces provided. This information, along with the installation data and dealer contact information,
will be helpful should your system require maintenance or service.
UNIT INFORMATION
Model # ___________________________________
Serial # ___________________________________
INSTALLATION INFORMATION
Date Installed _____________________________
DEALERSHIP CO NTACT INFORMATION
Company Name: _________________________________
Address:_________________________________________
________________________________________________
Phone Number:__________________________________
Technician Name:_________________________________
________________________________________________
Specifications subject to change without notice.
A NOTE ABOUT SAFETY
Any time you see this symbol in manuals, instructions and on the
unit, be aware of the potential for personal injury. There are three levels
of precaution:
DANGER identifies the most serious hazards which will result in
severe personal injury or death.
WARNING signifies hazards that could result in personal injury or
death.
CAUTION is used to identify unsafe practices which could result in
minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
!
PERSONAL INJURY, DEATH AND / OR PROPERTY
DAMAGE HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Improper installation, adjustment, alteration, service,
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 assistance. The
qualified installer or service agency must use
factory−authorized kits or accessories when modifying this
product.
Read and follow all instructions and warnings, including labels
shipped with or attached to unit before operating your new air
conditioner.
WARNING
GENERAL
The ducted fan coil unit provides quiet, maximum comfort. In
addition to cooling and/or heating, the ducted fan coil unit matched
with an outdoor condensing unit filters and dehumidifies the air in
the room to provide maximum comfort.
IMPORTANT: The ducted fan coil unit should be installed by
authorized personnel only; using approved tubing and accessories. If
technical assistance, service or repair is needed, contact the installer.
The ducted fan coil unit can be set up and operated from the remote
control (provided). If the remote is misplaced, the system can be
operated from the “Auto” setting on the unit.
OPERATING MODES
The ducted fan coil unit has five operating modes:
S Fan only
S Auto
S Heating (heat pump models only)
S Cooling
S Dehumidification (DRY)
Fan Only
In FAN ONLY mode, the system filters and circulates the room air
without changing room air temperature.
Auto
In AUTO mode, the system automatically cools or heats the room
according to the user−selected set point.
NOTE: AUTO mode is recommended for use on single zone
applications only. Using Auto changeover on multi−zone applications
could set an indoor unit to STANDBY mode, indicated with two dashes
(−−) on the display, which will turn off the indoor unit until all the
indoor units are in the same mode (COOLING or HEATING).
Heating is the system’s priority mode. Simultaneous HEATING and
COOLING is not allowed.
Heating
In HEATING mode, the system heats and filters the room air.
Cooling
In COOLING mode, the system cools, dries and filters the room air.
Dehumidification (DRY)
In DEHUMIDIFICATION mode, the system dries, filters and
slightly cools the room air temperature. This mode prioritizes air
dehumidification but it does not take the place of a dehumidifier.
WIRELESS REMOTE CONTROL
The remote control transmits commands to set up and operate the
system. The control has a window display panel that displays the
current system status. The control can be secured to a surface when
used with the mounting bracket provided.
WIRED REMOTE CONTROL (OPTIONAL)
2 32802000301
Specifications subject to change without notice.
PARTS LIST
Table 1—Parts List
PAR T NAME
INDOOR UNIT
DRAIN ADAPTER
AIR FIL TER
WIRED CONTROLLER
WIRELESS REMOTE
Air inlet
Electric control cabinet
Air filter
Air outlet
NOTE: Images are for illustration purposes only.
DISPLAY PANEL
Drain hose(field supplied)
Refrigerant connecting pipe
F
F
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O
P
F
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E
D
O
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O
P
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I
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A
F
F
F
O
T
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E
R
I
D
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I
EP
E
W
L
S
S
ED
L
W
O
L
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FO
N
BO
R
EA
L
U
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C
Fig. 1 - Parts List
Fig. 2 - IR (Infrared) r eceiver Display Panel
(field supplied)
32802000301 3
Specifications subject to change without notice.
BUTTON FUNCTIONS
Before you begin using your new air conditioner, make sure to
familiarize yourself with the remote control. The following is a brief
introduction to the remote control.
6. Set Button
Used to initiate the following functions in the sequence below , in
conjunction with the
(* Indicates optional functions)
Press the SET button to select the desired function. The selected
symbol will flash on the display area. Then press the
button to confirm.
SLEEP Function ( )
This function maintains the most comfortable temperature and
saves energy. It is available in COOL, HEAT, or AUTO modes
only.
For details, see sleep operation in the USERS MANUAL.
* FRESH Function (
Not available on this system.
and buttons.
)
or
Fig. 3 - Remote Controller Buttons
1. ON/OFF Button ( )
This button turns the unit ON and OFF.
2. UP Button ( ) and DOWN Button ( )
Press these buttons to increase or decrease the set temperature or
Timer setting hours.
3. Fan Button (
Used to select the fan speed in four steps:
NOTE:
Hold down this button for at least 2 seconds to activate/cancel
Silent mode. Due to low frequency operation of the compressor,
it may result in insufficient cooling and heating capacity.
4. Fan Button (
Used to select the fan speed in four steps:
You cannot switch the fan speed in AUTO or DRY mode.
NOTE: Hold down this button for at least 2 seconds to activate/cancel
Turbo mode. Turbo function enables the unit to reach the preset
temperature at cooling or heating operation in the shortest time. If the
indoor unit does not support this function, there is no corresponding
operation happening when this button is pressed.
)
)
* SELF CLEAN Function (
In SELF CLEAN mode, the unit automatically cleans and dries
the Evaporator and keeps it fresh for the next operation.
* FOLLOW ME Function (
When the Follow Me function is activated, the remote display is
the actual temperature at its location. The remote control will
send this signal to the unit every 3 minutes until the FOLLOW
ME button is pressed again.
7. Shortcut Button
) (optional)
) (optional)
S Used to restore the current settings or resume previous
settings.
S The first time connecting to power, if the SHORTCUT button
is pressed, the unit will operate in AUTO mode, 80
the fan speed is Auto.
°F, and
S Push this button when the remote controller is on, and the
system automatically reverts back to the previous settings
including operating mode, setting temperature, fan speed
level, and sleep feature (if activated).
S If this button is pressed more than 2 seconds, the system
automatically restores the current operation settings including
operating mode, setting temperature, fan speed level, and
sleep feature (if activated).
8. Mode Button
Press this button to modify the unit mode in the following
sequence:
9. LED Button ( )
Press this button to turn ON/OFF the indoor screen display.
NOTE: Pressing and holding the LED and SWING buttons together
for 3 seconds will alternate the temperature display between °C and °F
scales.
10. LOCK Function
Press SHORT CUT and LED buttons together to lock or unlock
the keyboard.
5. Swing Button (
Used to stop or start horizontal louver movement. Hold down this
button for 2 seconds to start/stop vertical louver movement. Not
available on this system.
4 32802000301
)
Specifications subject to change without notice.
MODE DISPLAY
Fig. 4 - LCD Indicators
Fig. 5 - Mode Display
NOTE: All indicators shown in the figure are for the purpose of clear
presentation. During the actual operation, only the relative functional
signs are shown in the display window.
REMOTE CONTROL
!
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
Handle the control with care and avoid getting the control
wet.
AUTION
IMPORTANT: The remote control can operate the unit from a distance
of up to 26 ft. (8 m) as long as there are no obstructions. When the
timer function is used, the remote control should be kept in the vicinity
of the fan coil (within 26 ft. / 8 m).
The remote control can perform the following basic functions:
S Turn the system ON and OFF
S Select operating mode
S Adjust room air temperature set point and fan speed
S Adjust airflow direction
Refer to the Remote Control Function section for a detailed description
of all the capabilities of the remote control.
Battery Installation
Two AAA 1.5v alkaline batteries (included) are required for operation
of the remote control.
To install or replace batteries:
1. Slide the back cover off the control to open the battery
compartment.
2. Insert batteries. Follow the polarity markings inside the battery
compartment.
3. Replace the battery compartment cover.
NOTE:
1. When replacing batteries, do not use old batteries or a different
type battery. This may cause the remote control to malfunction.
2. If the remote is not going to be used for several weeks, remove
the batteries. Otherwise battery leakage may damage the remote
control.
3. The average battery life under normal use is about 6 months.
4. Replace the batteries when there is no audible beep from the
indoor unit or if the Transmission Indicator fails to light.
5. When batteries are removed, the remote control erases all
programmed settings. The control must be reprogrammed
after insertion of new batteries.
Remote Control Operation * Quick Start
NOTE: When transmitting a command from the remote control to the
unit, be sure to point the control toward the right side of the unit. The
unit confirms receipt of a command by sounding an audible beep.
1. Turn the unit on by pushing the ON/OFF button.
2. If there is a preference for
hold the increase
buttons together for approximately 3 seconds.
3. Select the desired mode by pushing the mode button.
°C rather than °F (default), press and
Y and decrease B temperature set point
Fig. 6 - Modes
4. Select the temperature set point by pointing the control toward
the unit and pressing the increase/decrease temperature set point
buttons until the desired temperature appears on screen.
5. Select the desired fan speed by pressing the FAN button.
NOTE: If the unit is operating in DRY or AUTO mode, the fan
speed will be automatically set.
32802000301 5
Specifications subject to change without notice.
Manual Operation
If the remote control is lost, damaged, or the batteries are exhausted, the
MANUAL button can be used to run the unit. When the MANUAL
button is pressed once, the AUTO mode takes affect (heat or cool).
When this button is pressed twice, the system enters the TEST mode
and runs for 30 minutes in the COOLING mode (it runs in AUTO
mode afterward).
When pressed three times, the system turns OFF.
Manual button
Operation indicator
Timer indicator
PRE-DEF
(pre-heating/defrost)
indicator
Fig. 7 - − IR Receiver Display Panel
The set conditions of manual operation are as follows:
LED display
Infrared receiver
Alarm indicator
S Preset set point: 76°F (24°C)
S Fan speed: AUTO
S Discharge air direction: Pre−set position based on operation
in COOL or HEAT mode
REMOTE CONTROL FUNCTIONS
Pressing the On/Off Button
When the air conditioner is not in operation, the remote control
displays the last set point and mode.
S Press ON/OFF to start the unit.
* The unit starts in the last operating mode and set point. The
ON/OFF indicator appears.
S Press On/Off to stop the unit.
* All the indicator lights on the unit go out, and the remote
control displays the set point and mode.
NOTE: If the On/Off button is pressed too soon after a stop, the
compressor will not start for 3 to 4 minutes due to the inherent
protection against frequent compressor cycling. The unit only emits an
audible beep when the signals are received correctly.
Selecting an Operating Mode
NOTE: Use OPERATING mode to select one of the available modes.
NOTE: In the COOLING mode, if the temperature selected is higher
than the room temperature, the unit will not start. The same applies for
the HEATING mode if the selected temperature is lower than the room
temperature.
Selecting the Fan Speed
Fig. 9 - Fig. 9 * Fan Speeds
The fan speed can be selected by pressing FAN.
NOTE: When the unit is on, the fan runs continuously in cooling or
heating. When in heating, there might be situations where the fan will
slow down or shut off to prevent cold blow.
Selecting the Up*Down Airflow Louver Position
To optimize comfort, the horizontal louver should be adjusted as shown
below.
AUTO OPERATION
Fig. 10 - Remote Controller Buttons for Auto Operation
Ensure the unit is plugged in and power is available. The OPERATION
indicator on the display panel of the indoor unit starts flashing.
1. Press the MODE button to select Auto.
2. Press the UP/DOWN button to set the desired temperature. The
°F~86°F in 1°F
Fig. 8 - Display
temperature can be set within a range of 62
increments.
3. Press the ON/OFF button to start the unit.
NOTE:
S In Auto mode, the unit can logically choose the mode of
Setting the Room Temperature Set Point
Press the increase temperature set point Y and decrease B buttons
to raise or lower the temperature.
The unit confirms the signal receipt with a beep and the value of the set
temperature appears on the display and changes accordingly. The
temperature can be set between 62°F (17°C) and 86°F (30°C) in
increments of 1
6 32802000301
°F or 1°C.
Specifications subject to change without notice.
Cooling, Fan, and Heating by sensing the difference between
the actual ambient room temperature and the setting
temperature on the remote controller.
S In Auto mode, you cannot switch the fan speed. It has already
been automatically controlled.
S If Auto mode is not comfortable for you, the desired mode
can be manually selected.
Cooling /Heating/Fan Operation
Ensure the unit is plugged in and power is available.
1. Press the MODE button to select COOL, HEAT (cooling and
heating models only), or FAN mode.
2. Press the UP/DOWN buttons to set the desired temperature. The
temperature can be set within a range of 62°F~86°F in 1°F
increments.
3. Press the FAN button to select the fan speed in four steps− Auto,
Low, Med, or High.
4. Press the ON/OFF button to start the unit.
NOTE: In FAN mode, the setting temperature is not displayed on the
remote controller and you are not able to control the room temperature.
In this case, only steps 1, 3, and 4 may be performed.
DEHUMIDIFYING OPERATION
TIMER OPERATION
Fig. 11 - Remote Controller Buttons for Dehumidifying Opera-
tion
Ensure the unit is plugged in and power is available. The OPERATION
indicator on the display panel of the indoor unit starts flashing.
1. Press the MODE button to select DRY mode.
2. Press the UP/DOWN buttons to set the desired temperature. The
temperature can be set within a range of 62
increments.
3. Press the ON/OFF button to start the unit.
°F~86°F in 1°F
Fig. 12 - Remote Controller Buttons for Timer Operation
Press the SET button can set the auto−on/off time of the unit.
Set the Auto−On Time
1. Press the SET button
The Timer on indicator
Auto−on setting time and the signal “h” shows on the LCD
display area. Now it is ready to reset the Auto−on time to
START the operation.
2. Press the
time you press the button, the time increases/decreases by half an
hour between 0 and 10 hours and by one hour between 10 and
24 hours.
3. Once the desired time is established, there will be a three second
delay before the remote controller transmits the signal to the
unit. Then, the “h” signal disappears, and the Timer On indicator
will remain on and the set temperature will re−appear on the
LCD display window.
or button to set desired Auto−On time. Each
displays and flashes. The last
Set the Auto−Off Time
1. Press the SET button until the Timer On indicator displays
and flashes. The last Auto−off setting time and the “h” signal
will be shown on the LCD display area. Now it is ready to reset
the Auto−off time to STOP the operation.
2. Press the
time you press the button, the time increases/decreases by half an
hour between 0 and 10 hours and by one hour between 10 and
24 hours.
3. Once the desired time is established, there will be a three second
delay before the remote controller transmits the signal to the
unit. Then, the “h” signal disappears, and the Timer Of f indicator
will remain on and the set temperature will re−appear on the
LCD display window.
or button to set desired Auto−On time. Each
Timer Setting Example
32802000301 7
Specifications subject to change without notice.
Timer O N
Fig. 13 - Timer ON Setting Example
(Auto−ON Operation)
The TIMER ON feature is useful when you want the unit to turn on
automatically before you return home. The unit will automatically start
operating at the set time.
Example
To start the unit in 6 hours.
1. Press the SET button to select TIMER ON.
The last setting of starting operation time and signal ”h” will show on
the display area.
2. Press the or button to display “6.0h” on the TIMER ON display
of the remote controller.
3. Wait for three seconds and the digital display area will show the
temperature again. The indicator remains on and this function is
activated.
Timer OFF
Fig. 15 - Combined Timer (Timer OFF ³ Timer ON)
This feature is useful when you want to stop the unit in the evening, and start it
again in the morning.
Example
To stop the unit 2 hours after setting and start it again 10 hours after setting.
1. Press the SET button to select TIMER OFF.
2. Press the or button to display “2.0h” on the TIMER OFF
display.
3. Press the SET button to select TIMER ON.
4. Press or button to display “10h“ on the TIMER ON display .
5. Wait three seconds and the digital display area will show the
temperature again. The and indicators remain on and this
function is activated.
TIMER ON ³ TIMER OFF
(Off ³ Start ³ Stop operation)
Fig. 14 - Timer OFF Setting Example
(Auto−OFF Operation)
The TIMER OFF feature is useful when you want the unit to turn off
automatically after you go to bed. The unit will stop automatically at the set
time.
Example
To sop the unit in 10 hours.
1. Press the SET button to select TIMER OFF.
The last setting of stopping operation time and the signal ”h” will show
on the display area.
2. Press the or button to display “10h” on the TIMER OFF
display of the remote controller.
3. Wait for three seconds and the digital display area will show the
temperature again. The indicator remains on and this function is
activated.
Combined Timer
(Setting both ON and OFF timers simultaneously)
TIMER OFF ³ TIMER ON
(On ³ Stop ³ Start operation)
Fig. 16 - Combined Timer (Timer ON ³ Timer OFF)
This feature is useful when you want to start the unit before waking up and
stopping it after leaving the house.
Example
To start the unit 2 hours after setting and stop it 5 hours after setting.
1. Press the SET button to select TIMER ON.
2. Press the or button to display “2.0h” on the TIMER ON
display.
3. Press the SET button to select TIMER OFF.
4. Press the or button to display “5.0h” on the TIMER OFF
display.
5. Wait three seconds, and the digital display area will show the
temperature again.
The and indicators remain on and this function is activated.
8 32802000301
Specifications subject to change without notice.
Sleep Mode
SLEEP mode is used to conserve energy and can be used when the unit
is in the COOL, HEAT or AUTO mode only.
Cool Mode
a. Push SLEEP. After 1 hour the set point raises by 1.8_F (1_C).
After another hour, the set point raises by another 1.8_F (1_C)
and the fan runs in a low speed. The unit shuts off 5 hours after
setting the SLEEP mode. The SLEEP mode cancels if either
MODE, TEMP, FAN, TIMER, or ON/OFF on the remote
control are pressed.
Heat Mode
Same as cooling mode however set points are lowered by 1.8_F (1_C).
Turbo Mode
Use the TURBO mode to cool or heat the room rapidly.
a. Press TURBO. An audible “beep” is heard if the indoor unit
supports this function. The fan runs on super high speed. The
TURBO mode terminates automatically 20 minutes after
pushing TURBO. It can be terminated immediately by
selecting TURBO again. When the TURBO mode is
terminated, the unit reverts to the original setting.
Self Clean Mode
Press CLEAN to activate or deactivate the self−cleaning fu nction.
Under this function, the air co nditioner automatically cleans and dries
the evaporator. The cleaning cy cle takes 16 minutes, after which the
unit turns off automatically. Pressing CLEAN in the middle of the
cycle cancels the operation and turns off the unit. This function can be
activated only in t he COOL or DRY mode.
Follow Me Mode
Press Follow Me to activate or deactivate this function. Under this
setting, the temperature that appears in the remote control is the
actual temperature at its location. The remote control sends this
signal to the air conditioner every 3 minutes. This function is not
available for DRY and FAN modes.
Freeze Protection Mode
Press FP for approximately 2 seconds to activate or deactivate the
freeze protection mode (heating set back). The indoor unit displays
“FP”.
NOTE: This function is only available in the heating mode.
Under this function, the unit operates at high fan speed and the coil
temperature automatically sets to 46_F (8_C). This mode can also be
deactivated by pressing ON/OFF, SLEEP, MODE, FAN, or either
TEMP.
Silence Mode
NOTE: The Silence Mode (SLC) feature is not available on this
model.
LED Light
Press LED to turn the display light on and off.
Resetting the Remote Control
If the batteries in the remote control are removed, the current settings
will be cancelled and the con trol returns to the initial setting s and w ill
be in standby mode. Push ON/OFF to activate.
Time Delay
If ON/OFF is pressed too soon after a stop, the compressor will not
start for 3 to 4 minutes due to the inherent protection against
frequent compressor cycling. The unit only emits an audible beep
when the signals are received correctly.
Heating Features
If the unit is in the heating mode, there is a delay when the fan starts.
The fan starts only after the coil is warmed up to prevent cold blow.
Auto Defrost Operation
In HEATING mode, if the outdoor coil is frosted, the indoor fan
and outdoor fan turns off while the system removes the frost from
the outdoor coil. The system automatically reverts to normal
operation when frost is removed from the outdoor unit.
Auto Start
If the power fails while the unit is operating, the unit stores the
operating condition, and the unit will start operation automatically
under those conditions when the power is restored.
32802000301 9
Specifications subject to change without notice.
CLEANING, MAINTENANCE, AND TROUBLESHOOTING
!
CAUTION
ELECTRICAL SHOCK HAZARD
Failure to follow this caution may result in personal injury
or death.
Always turn off power to the system before performing any
cleaning or maintenance to the system. Turn off the outdoor
disconnect switch located near outdoor unit. Be sure to
disconnect indoor unit if on a separate switch
!
CAUTION
EQUIPMENT DAMAGE/OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper unit operation.
Operating the system with dirty air filters may damage the
indoor unit and could cause reduced cooling performance,
intermittent system operation, frost build−up on indoor coil
or blown fuses.
PERIODIC MAINTENANCE
Periodic maintenance is recommended to ensure proper operation of
the unit. Recommended maintenance intervals may vary depending
on the installation environment, e.g., dusty zones. Refer to Table 2.
!
CAUTION
CUT HAZARD
Failure to follow this caution may result in personal injury.
The coil fins are very sharp. Use caution when cleaning.
Always wear safety protection.
Cleaning the Coil
Clean the coil at the beginning of each cooling season or when
necessary. Use a vacuum cleaner or a long−bristle brush to avoid
damage to the coil fins.
Air Filters
Remove and clean the air filters once a month.
NOTE: If the air filters show signs of excessive wear or are torn, they
must be replaced. Contact your local dealer for replacement filters.
1. Unscrew filters from the frame.
2. Pull filters down to remove.
A150678
Fig. 17 - Remove the Filters
3. Vacuum filters.
A150648
Fig. 18 - Vacuum the Filters
4. Clean with warm water.
A150649
Fig. 19 - Clean Filter with Warm Water
5. Shake filter to remove excess water and dry thoroughly.
6. Replace filter by sliding into rack until filter snaps in place.
7. Close front panel on unit.
!
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
When cleaning the front panel, do not use water hotter than
105_F (40.6_C) and do not pour water onto the fan coil. Do
not use abrasive or petroleum based cleaners as they may
damage the front panel.
Preparing for Extended Shutdown Period
Clean the filters and place them back in the unit. Operate the unit in
FAN ONLY mode for 12 hours to dry all internal parts. Turn the main
power supply off and remove the batteries from the remote control.
System Operation Recommendations
The items outlined in the following list help to ensure proper system
operation:
S Replace both remote control batteries.
S Point the remote control toward the unit display panel when
transmitting a command.
S Keep doors and windows closed while the unit is operating.
S Contact an authorized service representative if a problem arises that
cannot be easily resolved.
S Do not perform cleaning or maintenance while the unit is on.
S Keep the display panel on the unit away from direct sunlight and
heat as this may interfere with remote control transmissions.
S Do not block air intakes and outlets on the indoor or outdoor units.
10 32802000301
Specifications subject to change without notice.
Energy Saving Recommendations
The following recommendations will add greater efficiency to the
ductless system:
S Select a comfortable thermostat setting and leave it at chosen
setting. Avoid raising and lowering the setting.
S Keep the filter clean. Frequent cleaning may be necessary
depending on indoor air quality.
TROUBLESHOOTING
Refer to Table 2 before contacting your local dealer.
Table 2—Periodic Maintenance
INDOOR UNIT EVERY MONTH EVERY 6 MONTHS EVERY YEAR
Clean Air Filter*
Change Remote Control Batteries
OUTDOOR UNIT EVERY MONTH EVERY 6 MONTHS EVERY YEAR
Clean Outdoor Coil from Outside
Clean Outdoor Coil from Inside†
Blow Air Over Electric Parts†
Check Electric Connection Tightening† Clean
Fan Wheel†
Check Fan Tightening†
Clean Drain Pans†
* Increase frequency in dusty zones.
{ Maintenance to be carried out by qualified service personnel. Refer to the Installation Manual.
!
CAUTION
S
S Use drapes, curtains, or shades to keep direct sunlight from heating
S Limit the unit’s run time by using the TIMER function.
S Do not obstruct the air intake on the front panel.
S Turn on the air conditioning unit before the indoor air becomes too
the room on very hot days.
uncomfortable.
S
S
S
S
S
S
S
S
If one of the following conditions occurs, switch off the
power supply immediately and contact your dealer for
further assistance.
S The operation light continues to flash rapidly after the
unit has been restarted.
S The remote control buttons do not work.
S The unit continually trips fuses or circuit breakers.
S A foreign object or water enters the air conditioner.
S Other abnormal situations.
The following symptoms are not malfunctions and in most situations will not require repairs.
32802000301 11
Specifications subject to change without notice.
COMMON PROBLEMS
Table 3—Common Problems
PROBLEM POSSIBLE CAUSES
The unit has a 3-minute protection feature that prevents the unit from overloading. The unit cannot be
restarted within three minutes of being turned off.
Unit does not turn on when pressing ON/ OFF
The unit changes from COOL mode to FAN mode
The indoor unit emits white mist
Both the indoor and outdoor units emit white mist
The indoor unit makes noises
Both the indoor unit and outdoor unit make noises
The outdoor unit makes noises The unit will make different sounds based on its current operating mode.
Dust is emitted from either the indoor or outdoor unit
The unit emits a bad odor
The fan of the outdoor unit does not operate During operation, the fan speed is controlled to optimize product operation.
Cooling and Heating Models: If the Operation light and PRE-DEF (Pre-heating/ Defrost) indicators are lit up,
the outdoor temperature is too cold and the unit’s anti-cold wind is activated in order to defrost the unit.
In Cooling-only Models: If the “Fan Only” indicator is lit up, the outdoor temperature is too cold and the unit’s
anti-freeze protection is activated in order to defrost the unit.
The unit changes its setting to prevent frost from forming on the unit. Once the temperature increases, the unit
will start operating again.
The set temperature has been reached, at which point the unit turns off the compressor. The unit will resume
operating when the temperature fluctuates again.
In humid regions, a large temperature difference between the room’s air and the conditioned air can cause
white mist.
When the unit restarts in HEAT mode after defrosting, white mist may be emitted due to moisture generated
from the defrosting process.
A squeaking sound is heard when the system is OFF or in COOL mode. The noise is also heard when the drain
pump (optional) is in operation.
A squeaking sound may occur after running the unit in HEAT mode due to expansion and contraction of the
unit’s plastic parts.
A low hissing sound may occur during operation. This is normal and is caused by refrigerant gas flowing
through both the indoor and outdoor units.
A low hissing sound may be heard when the system starts, has just stopped running or is defrosting. This noise
is normal and is caused by the refrigerant gas stopping or changing direction.
The unit may accumulate dust during extended periods of non-use, which will be emitted when the unit is
turned on. This can be mitigated by covering the unit during long periods of inactivity.
The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.) which will be
emitted during operations.
The unit’s filters have become moldy and should be cleaned.
Table 4—Troubleshooting Tips
PROBLEM POSSIBLE CAUSE SOLUTION
• The circuit breaker has tripped or a fuse has blown.
• Power failure.
Unit/System Does Not Work
Poor cooling performance
Poor heating performance
Unit Stops During Operation
* Diagnostic lights are a combination of lights that will illuminate in the display area on the unit. They are a combination of the lights you see during normal operation.
• Diagnostic lights illuminate.*
• Voltage is too low
• Remote control batteries are dead
• The unit's 3 minute protection has been activated.
• The filter is blocked with dust.
• Temperature is not set properly.
• A window or door is open.
• The outdoor unit is obstructed.
• The fan speed is too low.
• The operation mode is in Fan instead of Cool.
• Low refrigerant due to leak or long-term use of
refrigerant.
• The filter is blocked with dust.
• Temperature is set too low.
• A window or door is open.
• The outdoor unit is obstructed.
• The Off timer is not operating correctly.
• Diagnostic lights illuminate.*
• Reset the circuit breaker or replace the fuse with the specified
replacement fuse.
• Restart operation when the power is restored.
• Call your service representative.
• Call your service representative.
• Replace the remote control batteries
• Wait three minutes after restarting the unit.
• Clean the air filter.
• Check the temperature and reset if necessary.
• Ensure all doors and windows are closed while operating the
unit.
• Turn the unit off, remove the obstruction and turn it back on.
• Change the fan speed selection.
• Change the operating mode to Cool or reset the unit.
• Check for leaks, re-seal if necessary and top off refrigerant.
• Clean the air filter.
• Check the temperature and reset if necessary.
• Ensure all doors and windows are closed while operating the
unit.
• Turn the unit off, remove the obstruction and turn it back on.
• Restart the operating mode.
• Call your service representative.
Copyright 2018
CMNA 1025 Cobb Place Pkwy Kennesaw, GA 30152
12 32802000301
Specifications subject to change without notice.
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