DAIKIN ROOM AIR CONDITIONER OPERATION MANUAL
Enjoy year-round comfort.
MODELS: FTX09NMVJU, FTX12NMVJU, FTX15NMVJU, FTX18NMVJU, FTX24NMVJU, FTXN09NMVJU, FTXN12NMVJU, FTXN18NMVJU, FTXN24NMVJU
Features
Enhanced comfort and energy savings
COMFORT AIRFLOW
The airflow direction is upward while in COOL operation, and downward while in HEAT operation. This function prevents cold or warm air from blowing directly on your body. Page 15
ECONO
This function enables efficient operation by limiting the maximum power consumption. It is useful when using the air conditioner and other electrical devices simultaneously on a shared electrical circuit. Page 16
Read Before Operation
Safety Considerations
Read these Safety Considerations for Operations carefully before operating an air conditioner or heat pump. Make sure that the unit operates properly during the startup operation. Instruct the user on how to operate and maintain the unit. Inform users that they should store this operation manual with the installation manual for future reference.
Meanings of DANGER, WARNING, CAUTION, and NOTE Symbols:
- DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
- WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
- CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.
- NOTE: Indicates situations that may result in equipment or property-damage accidents only.
DANGER
- Do not install the unit in an area where flammable materials are present due to risk of explosion resulting in serious injury or death.
- Any abnormalities in the operation of the air conditioner or heat pump, such as smoke or fire, could result in severe injury or death. Turn off the power and contact your dealer immediately.
- Refrigerant gas may produce toxic gas if it comes into contact with fire, such as from a fan heater, stove, or cooking device. Exposure to this gas could cause severe injury or death.
- For refrigerant leakage, consult your dealer. Refrigerant gas is heavier than air and replaces oxygen. A massive leak could lead to oxygen depletion, especially in basements, and an asphyxiation hazard could occur leading to serious injury or death.
- If equipment utilizing a burner is used in the same room as the air conditioner or heat pump, there is the danger of oxygen deficiency which could lead to an asphyxiation hazard resulting in serious injury or death. Be sure to ventilate the room sufficiently to avoid this hazard.
- Safely dispose of the packing materials. Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries.
- Tear apart and throw away plastic packaging bags so that children will not play with them. Children playing with plastic bags face the danger of death by suffocation.
WARNING
- Contact your dealer for repair and maintenance. Improper repair and maintenance may result in water leakage, electric shock, and fire. Only use accessories made by Daikin that are specifically designed for use with the equipment and have them installed by a professional.
- Contact your dealer to move and reinstall the air conditioner or heat pump. Incomplete installation may result in water leakage, electric shock, and fire.
- Never let the indoor unit or the remote controller get wet. Water can cause an electric shock or a fire.
- Never use flammable spray such as hair spray, lacquer, or paint near the unit. Flammable spray may cause a fire.
- When a fuse blows out, never replace it with one of incorrect ampere ratings or different wires. Always replace any blown fuse with a fuse of the same specification.
- Never remove the fan guard of the unit. A fan rotating at high speed without the fan guard is very dangerous.
- Never inspect or service the unit by yourself. Contact a qualified service person to perform this work.
- Turn off all electrical power before doing any maintenance to avoid the risk of serious electric shock; never sprinkle or spill water or liquids on the unit.
- Do not touch the switch with wet fingers. Touching a switch with wet fingers can cause electric shock.
- Do not allow children to play on or around the unit to prevent injury.
- The heat exchanger fins are sharp enough to cut. To avoid injury wear gloves or cover the fins while working around them.
- Do not put a finger or other objects into the air inlet or air outlet. The fan is rotating at high speed and will cause injury.
- Check the unit foundation for damage on a continuous basis, especially if it has been in use for a long time. If left in a damaged condition the unit may fall and cause injury.
- Placing a flower vase or other containers with water or other liquids on the unit could cause a shock or fire if a spill occurs.
- Do not touch the air outlet or horizontal blades while the swing flap is in operation because fingers could get caught and injured.
- Never touch the internal parts of the controller. Do not remove the front panel because some parts inside are dangerous to touch. To check and adjust internal parts, contact your dealer.
CAUTION
- Do not use the air conditioner or heat pump for any other purposes other than comfort cooling or heating. Do not use the unit for cooling precision instruments, food, plants, animals or works of art.
- Do not place items under the indoor unit as they may be damaged by condensates that may form if the humidity is above 80% or if the drain outlet gets blocked.
- Before cleaning, stop the operation of the unit by turning the power off or by pulling the supply cord out from its receptacle. Otherwise, an electric shock and injury may result.
- Do not wash the air conditioner or heat pump with excessive water. An electric shock or fire may result.
- Avoid placing the controller in a spot splashed with water. Water entering the controller may cause an electric shock or damage the internal electronic parts.
- Do not operate the air conditioner or heat pump when using a room-fumigation type of insecticide. Failure to observe this could cause the chemicals to be deposited in the unit and can endanger the health of those who are hypersensitive to chemicals.
- Do not turn off the power immediately after stopping operation. Always wait for at least 5 minutes before turning off the power. Otherwise, water leakage may occur.
- The appliance is not intended for use by young children or infirm persons without supervision.
- The remote controller should be kept away from children so they cannot play with it.
- Consult with the installation contractor for cleaning.
- Incorrect cleaning of the inside of the air conditioner or heat pump could make the plastic parts break and cause water leakage or electric shock.
- Do not touch the air inlet or aluminum fin of the air conditioner or heat pump as they can cut and cause injury.
- Do not place objects in direct proximity of the outdoor unit. Do not let leaves and other debris accumulate around the unit. Leaves are a hotbed for small animals which can enter the unit. Once inside the unit, animals can cause the unit to malfunction, and cause smoke or fire when they make contact with electrical parts.
NOTE
- Never press the button of the remote controller with a hard, pointed object. The remote controller may be damaged.
- Never pull or twist the electric wire of the remote controller. It may cause the unit to malfunction.
- Do not place appliances that produce open flames in places that are exposed to the airflow of the unit or under the indoor unit. It may cause incomplete combustion or deformation of the unit due to the heat.
- Do not expose the controller to direct sunlight. The LCD display can become discolored and may fail to display the data.
- Do not wipe the controller operation panel with benzene, thinner, chemical dust cloth, etc. The panel may get discolored or the coating can peel off. If it is heavily dirty, soak a cloth in water-diluted neutral detergent, squeeze it well and wipe the panel clean. Then wipe it with another dry cloth.
- Dismantling of the unit, disposal of the refrigerant, oil, and additional parts, should be done in accordance with the relevant local, state, and national regulations.
- Operate the air conditioner or heat pump in a sufficiently ventilated area and not surrounded by obstacles. Do not use the air conditioner or heat pump in the following places: a. Places with a mist of mineral oil, such as cutting oil. b. Locations such as coastal areas where there is a lot of salt in the air. c. Locations such as hot springs where there is a lot of sulfur in the air. d. Locations such as factories where the power voltage varies a lot. e. In cars, boats, and other vehicles. f. Locations such as kitchens where oil may splatter or where there is steam in the air. g. Locations where equipment produces electromagnetic waves. h. Places with an acid or alkaline mist. i. Places where fallen leaves can accumulate or where weeds can grow.
- Take snow protection measures. Contact your dealer for the details of snow protection measures, such as the use of a snow protection hood.
- Do not attempt to do electrical work or grounding work unless you are licensed to do so. Consult with your dealer for electrical work and grounding work.
- Pay attention to operating sound. Be sure to use the following places: a. Places that can sufficiently withstand the weight of the air conditioner or heat pump yet can suppress the operating sound and vibration. b. Places where warm air from the air outlet of the outdoor unit or the operating sound of the outdoor unit does not annoy neighbors.
- Make sure that there are no obstacles close to the outdoor unit. Obstacles close to the outdoor unit may drop the performance of the outdoor unit or increase the operating sound of the outdoor unit.
- Consult your dealer if the air conditioner or heat pump in operation generates unusual noise.
- Make sure that the drainpipe is installed properly to drain water. If no water is discharged from the drainpipe while the air conditioner or heat pump is in the cooling mode, the drainpipe may be clogged with dust or dirt and water leakage from the indoor unit may occur. Stop operating the air conditioner or heat pump and contact your dealer.
Names of Parts
Indoor Unit (Models: FTX09NMVJU / FTX12NMVJU / FTXN09NMVJU / FTXN12NMVJU)
Description of Indoor Unit Components:
- Front panel: The main cover of the indoor unit.
- Air inlet: Where air is drawn into the unit.
- Flap (horizontal blade): Controls the horizontal airflow direction.
- Louvers (vertical blades): Controls the vertical airflow direction. Located inside the air outlet.
- Air outlet: Where conditioned air is expelled.
- Model name: Identifies the specific model of the unit.
- Indoor temperature sensor: Detects the air temperature around the unit.
- Signal receiver: Receives signals from the remote controller. A beep sound is heard when a signal is received.
- Display: Shows operation status, settings, and error codes.
- OPERATION lamp (green): Indicates the unit is operating.
- TIMER lamp (orange): Indicates timer functions are active.
- Indoor unit ON/OFF switch: Allows starting or stopping operation directly from the unit.
Signal Receiver Sound Types:
| Case | Sound type |
|---|---|
| Operation start | beep-beep |
| Setting changed | beep |
| Operation stop | long beep |
Indoor unit ON/OFF switch operation:
- Press once to start operation. Press again to stop.
- For operation mode setting, refer to the table: Mode: AUTO, Temperature setting: 77°F (25°C), Airflow rate: AUTO.
- This switch can be used when the remote controller is missing.
Open the front panel
Description of opening the front panel: Hold the front panel by the sides and open it.
Outdoor Unit
Description of Outdoor Unit Components:
- Air inlet (back and side): Where air is drawn into the outdoor unit.
- Air outlet: Where air is expelled from the outdoor unit.
- Outdoor temperature sensor (back): Detects the ambient outdoor temperature.
- Refrigerant pipes and inter-unit wire: Connect the indoor and outdoor units.
- Model name: Identifies the specific model of the unit.
- Ground terminal (inside): For electrical grounding.
- Drain hose: Drains condensed water.
Note: The appearance of the outdoor unit may differ between different models.
Air filter
Description: Filters air before it enters the unit. Should be vacuumed or washed every 2 weeks.
Titanium apatite photocatalytic air-purifying filter (without frame)
Description: A special filter for air purification. Should be vacuumed or replaced. Cleaning: Once every 6 months. Replacement: Once every 3 years. (Note: For FTXN09/12NMVJU, sold separately.)
Titanium apatite photocatalytic air-purifying filter (with frame)
Description: Similar to the filter without frame, but includes a frame. Cleaning: Once every 6 months. Replacement: Once every 3 years. (Note: For FTXN18/24NMVJU, sold separately.)
Names of Parts (Models: FTX15NMVJU / FTX18NMVJU / FTX24NMVJU / FTXN18NMVJU / FTXN24NMVJU)
Indoor Unit Components: (Similar to above models, with 'Flaps (horizontal blades)' mentioned.)
- Front panel
- Air inlet
- Flaps (horizontal blades)
- Louvers (vertical blades)
- Air outlet
- Model name
- Indoor temperature sensor
- Signal receiver
- Display
- OPERATION lamp (green)
- TIMER lamp (orange)
- Indoor unit ON/OFF switch
Signal Receiver Sound Types: (Same as above)
Indoor unit ON/OFF switch operation: (Same as above)
Open the front panel
Description of opening the front panel: Hold the front panel by the sides and open it.
Outdoor Unit
Description of Outdoor Unit Components: (Similar to above models.)
- Air inlet (back and side)
- Air outlet
- Outdoor temperature sensor (back)
- Refrigerant pipes and inter-unit wire
- Model name
- Ground terminal (inside)
- Drain hose
Note: The appearance of the outdoor unit may differ between different models.
Air filter
Description: Filters air before it enters the unit. Should be vacuumed or washed every 2 weeks.
Titanium apatite photocatalytic air-purifying filter (with frame)
Description: A special filter for air purification. Should be vacuumed or replaced. Cleaning: Once every 6 months. Replacement: Once every 3 years. (Note: For FTXN18/24NMVJU, sold separately.)
Names of Parts (Remote Controller)
Description of Remote Controller Components:
- Display (LCD): Displays current settings.
- AUTO button: Automatically selects an appropriate operation mode (COOL or HEAT) based on the indoor temperature and starts the operation. Page 11
- Direct operation buttons: Starts the COOL, DRY, HEAT or FAN ONLY operation. Page 11
- TEMPERATURE adjustment button: Changes the temperature setting. Page 12
- COMFORT button: Activates COMFORT AIRFLOW operation. Page 15
- POWERFUL button: Activates POWERFUL operation. Page 15
- OFF TIMER button (NIGHT SET mode): Sets the OFF timer. Page 18
- ON TIMER button: Sets the ON timer. Page 17
- Signal transmitter: Transmits signals to the indoor unit. Aim at the indoor unit. Maximum transmission distance is about 23ft (7m).
- Receiver: Receives signals from the remote controller.
- OFF button: Stops the operation. Page 12
- FAN setting button: Selects the airflow rate setting. Page 13
- ECONO button: Activates ECONO operation. Page 16
- SWING button: Adjusts the airflow direction. Page 14
- TIMER CANCEL button: Cancels the timer setting. Page 17,18
Unit and Remote Controller Models:
| Unit | Remote Controller |
|---|---|
| FTX09/12/15/18/24NMVJU | ARC480A8 (with backlight) |
| FTXN09/12/18/24NMVJU | ARC480A6 (without backlight) |
Preparation Before Operation
To insert the batteries
1. Remove the back cover by sliding and then slightly lifting it.
2. Insert 2 dry batteries AAA.LR03 (alkaline).
3. Replace the back cover.
To fix the remote controller holder to a wall
1. Choose a place where the signals reach the unit.
2. Attach the holder to a wall, a pillar, or similar location with the screws supplied with the holder.
3. Hang the remote controller on the remote controller holder.
Fahrenheit/Celsius display switch
Press ℹ︎ (TEMP) and ⏬ (TIMER button) simultaneously for about 5 seconds.
- The temperature will be displayed in Celsius when it is presently displayed in Fahrenheit, and vice versa.
- The switch operation is only possible when the temperature is being displayed.
Turn on the circuit breaker
After the power is turned on, the flap of the indoor unit opens and closes once to set the reference position.
NOTE
Notes on batteries
- When replacing the batteries, use batteries of the same type, and replace both old batteries together.
- The batteries will last for about 1 year. However, if the remote controller display begins to fade and the possible transmission range becomes shorter within a year, replace both batteries with new, size AAA.LR03 (alkaline) batteries.
- The batteries supplied with the remote controller are for initial operation. The batteries may run out in less than 1 year.
Note on remote controller
- Do not drop the remote controller. Do not get it wet.
Fahrenheit/Celsius display change function of remote controller
- The set temperature may increase when the display is changed to Celsius from Fahrenheit, because a fraction of 0.5°C is rounded up.
- Example: A set temperature of 65°F (equivalent to 18.5°C) will be converted into 19°C.
- When the display is changed to Fahrenheit again, the set temperature will be converted into 66°F (equivalent to 19°C) instead of the original set temperature (65°F) but a set temperature of 66°F (equivalent to 19°C) will be converted into 19°C with no temperature change.
- A reception sound will go off for the transmission of set temperature to the indoor unit at the time of setting the Fahrenheit/Celsius display change function.
Basic Operation
AUTO COOL DRY HEAT FAN ONLY Operation
The air conditioner operates with the operation mode of your choice.
To start operation
AUTO operation
To automatically select an appropriate temperature and operation mode.
Press ⏬ (AUTO).
COOL operation
To lower the temperature.
Press ⏫ (COOL).
DRY operation
To lower the humidity.
Press ⏪ (DRY).
HEAT operation
To raise the temperature.
Press ⏩ (HEAT).
FAN ONLY operation
To circulate air in the room.
Press ⏨ (FAN ONLY).
The OPERATION lamp lights green.
NOTE
Notes on AUTO operation
- In AUTO operation, the system selects an appropriate operation mode (COOL or HEAT) based on the indoor temperature and starts the operation.
- The system automatically reselects setting at a regular interval to bring the indoor temperature to the user-setting level.
Note on DRY operation
- Eliminates humidity while maintaining the indoor temperature as much as possible. It automatically controls temperature and airflow rate, so manual adjustment of these functions is unavailable.
To stop operation
Press ⏬ (OFF).
The OPERATION lamp goes off.
To change the temperature setting
Press ℹ︎ (TEMP °F/°C) to raise the temperature and press ℹ︎ (TEMP °F/°C) to lower the temperature.
| COOL operation | HEAT operation | AUTO operation | DRY or FAN ONLY operation |
|---|---|---|---|
| 64-90°F (18-32°C) | 50-86°F (10-30°C) | 64-86°F (18-30°C) | The temperature setting cannot be changed. |
Tips for saving energy
Keeping the temperature setting at a moderate level helps save energy.
- Recommended temperature setting
For cooling: 78-82°F (26-28°C)
For heating: 68-75°F (20-24°C) - Cover windows with a blind or a curtain.
Blocking sunlight and air from outdoors increases the cooling (heating) effect. - Keep the air filters clean.
Clogged air filters cause inefficient operation and waste energy. Clean them once every 2 weeks. Page 20, 23
If you are not going to use the air conditioner for a long period, for example in spring or autumn, turn off the circuit breaker.
- The air conditioner always consumes a small amount of electricity even while it is not operating.
Adjusting the Airflow Rate
You can adjust the airflow rate to increase your comfort.
To adjust the airflow rate setting
Press ⏨ (FAN).
Each pressing of ⏨ (FAN) changes the airflow rate setting in sequence:
- ⏬ (AUTO) → Indoor unit quiet → Airflow rate 1-5 (Low to High)
When the airflow is set to "⏬", quiet operation starts and noise from the indoor unit will become quieter.
- In the quiet operation mode, the airflow rate is set to a weak level.
Sequence for AUTO, COOL, HEAT and FAN ONLY operation:
- ⏬ (AUTO) → ⏬ (Indoor unit quiet) → ⏬⏬ → ⏬⏬⏬ → Airflow rate 1-5 (Low to High)
DRY operation: The airflow rate setting cannot be changed.
NOTE
Note on airflow rate setting
- At smaller airflow rates, the cooling (heating) effect is also smaller.
Adjusting the Airflow Direction
You can adjust the airflow direction to increase your comfort.
CAUTION: Always use a remote controller to adjust the angles of the flap. Moving the flap forcibly by hand may cause a malfunction. Be careful when adjusting the louvers. Inside the air outlet, a fan is rotating at a high speed.
To start auto swing
Up and down airflow direction
Press ⌧ (SWING).
- "⌧" is displayed on the LCD.
- The flap (horizontal blade) will begin to swing.
To set the flap at the desired position
This function is effective while the flap is in auto swing mode.
Press ⌧ (SWING) when the flap reaches the desired position.
- "⌧" disappears from the LCD.
To adjust the louvers at desired position
Hold the knobs and move the louvers (vertical blades).
Models: FTX09NMVJU / FTX12NMVJU / FTXN09NMVJU / FTXN12NMVJU
Models: FTX15NMVJU / FTX18NMVJU / FTX24NMVJU / FTXN18NMVJU / FTXN24NMVJU
[Diagram description: Two images showing the indoor unit's front panel open, with arrows indicating how to hold and move the knobs for the vertical louvers.]
NOTE
Notes on airflow direction setting
- The movable range of the flap varies according to the operation mode.
- The flap will stop at the upper position when the airflow rate is changed to low during the up and down swing setting.
[Diagram description: A diagram showing the movable range of the flap for COOL/DRY, FAN ONLY, and HEAT modes.]
Useful Functions
COMFORT AIRFLOW Operation
The air direction and flow rate are adjusted so that the air will not blow directly at people in the room.
To start COMFORT AIRFLOW operation
Press ⌚ (COMFORT).
- "⌚" is displayed on the LCD.
| COOL and DRY operation | HEAT operation | |
|---|---|---|
| Flap direction | Goes up | Goes down |
| Airflow rate | AUTO | AUTO |
Not available in FAN ONLY mode.
To cancel COMFORT AIRFLOW operation
Press ⌚ (COMFORT) again.
- "⌚" disappears from the LCD.
- The flap will return to the memory position from before COMFORT AIRFLOW operation.
POWERFUL Operation
POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. In this mode, the air conditioner operates at maximum capacity.
To start POWERFUL operation
Press ⌛ (POWERFUL).
- "⌛" is displayed on the LCD.
- POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the previous settings which were used before POWERFUL operation.
To cancel POWERFUL operation
Press ⌛ (POWERFUL) again.
- "⌛" disappears from the LCD.
ECONO Operation
ECONO operation enables efficient operation by limiting the maximum power consumption. This function is useful to prevent the circuit breaker from tripping when the unit operates alongside other appliances on the same circuit.
To start ECONO operation
Press ⌜ (ECONO).
- "⌜" is displayed on the LCD.
- Not available in FAN ONLY mode.
To cancel ECONO operation
Press ⌜ (ECONO) again.
- "⌜" disappears from the LCD.
NOTE
Note on COMFORT AIRFLOW operation
- If the up and down airflow direction is selected, the COMFORT AIRFLOW operation will be canceled.
Notes on POWERFUL operation
- Pressing ⏬ (OFF) causes the settings to be canceled, and "⌛" disappears from the LCD.
- POWERFUL operation will not increase the capacity of the air conditioner if the air conditioner is already in operation with its maximum capacity demonstrated.
- In COOL, HEAT and AUTO operation: To maximize the cooling (heating) effect, the capacity of outdoor unit increases and the airflow rate becomes fixed at the maximum setting. The temperature setting cannot be changed.
- In DRY operation: The temperature setting is lowered by 4.5°F (2.5°C) and the airflow rate is slightly increased.
- In FAN ONLY operation: The airflow rate is fixed at the maximum setting.
Notes on ECONO operation
- Pressing ⏬ (OFF) causes the settings to be canceled, and "⌜" disappears from the LCD.
- If the power consumption level is already low, switching to ECONO operation will not reduce the power consumption.
Some useful functions can be used together.
| COMFORT AIRFLOW + ECONO | Available |
| POWERFUL + COMFORT AIRFLOW | Not available* |
| POWERFUL + ECONO | Not available* |
*Priority is given to the function of whichever button is pressed last.
TIMER Operation
ON/OFF TIMER Operation
Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use the ON TIMER and OFF TIMER together.
To use ON TIMER operation
Press ⌞ (ON).
- "ON HR." is displayed on the LCD.
- Each pressing of ⌞ (ON) changes the time setting by 1 hour. The time can be set between 1 and 12 hours.
- The TIMER lamp lights orange.
To cancel ON TIMER operation
Press ⌦ (CANCEL).
- "ON HR." disappears from the LCD.
- The TIMER lamp goes off.
NOTE
In the following cases, set the timer again:
- After the circuit breaker has turned off.
- After a power failure.
- After replacing the batteries in the remote controller.
To use OFF TIMER operation
Press ⏬ (OFF).
- "OFF HR." is displayed on the LCD.
- Each pressing of ⏬ (OFF) changes the time setting by 1 hour. The time can be set between 1 and 12 hours.
- The TIMER lamp lights orange.
To cancel OFF TIMER operation
Press ⌦ (CANCEL).
- "OFF HR." disappears from the LCD.
- The TIMER lamp goes off.
To combine ON TIMER and OFF TIMER operation
A sample setting for combining the 2 timers is shown below.
- "ON" and "OFF" are displayed on the LCD.
[Example]
- When setting while the unit is operating: Stops the unit 1 hour later and starts it 7 hours after that.
- When setting while the unit is stopped: Starts the unit 2 hours later and stops it 3 hours after that.
NOTE
NIGHT SET mode
- When the OFF TIMER is set, the air conditioner automatically adjusts the temperature setting (0.9°F (0.5°C) up in COOL, 3.6°F (2.0°C) down in HEAT) to prevent excessive cooling (heating) during sleeping hours.
Care
Care and Cleaning (Models: FTX09NMVJU / FTX12NMVJU / FTXN09NMVJU / FTXN12NMVJU)
CAUTION: Before cleaning, be sure to stop the operation and turn off the circuit breaker. Do not touch the aluminum fins of the indoor unit. If you touch those parts, this may cause an injury.
Quick reference
Cleaning parts
Front panel
- Wipe it with a soft damp cloth.
- Only neutral detergent may be used.
Air filter
- Vacuum dust or wash the filter.
- Once every 2 weeks. Page 20
Indoor unit, outdoor unit and remote controller
- Wipe them with a soft cloth.
Titanium apatite photocatalytic air-purifying filter (without frame)
- Vacuum dust or replace the filter.
- [Cleaning] Once every 6 months. Page 21
- [Replacement] Once every 3 years. Page 21
*FTXN09/12NMVJU: Sold separately.
NOTE
For cleaning, do not use any of the following:
- Water hotter than 104°F (40°C)
- Volatile liquid such as benzene, petrol and thinner
- Polishing compounds
- Rough materials such as a scrubbing brush
Air filter cleaning steps
- Open the front panel. Hold the front panel by the sides and open it. [Diagram description: Image showing the front panel of the indoor unit being opened.]
- Pull out the air filters. Push the filter tab at the center of each air filter a little upwards, then pull it down. [Diagram description: Image showing how to push the filter tab and pull down the air filter.]
- Wash the air filters with water or clean them with vacuum cleaner. It is recommended to clean the air filters every 2 weeks. [Diagram description: Image of air filters being washed or cleaned with a vacuum.]
- If the dust does not come off easily: Wash the air filters with neutral detergent thinned with lukewarm water, then dry them up in the shade.
- Reattach the filters.
- Close the front panel slowly. Press the panel at both sides and the center. Make sure that the front panel is securely fixed. [Diagram description: Image showing the front panel being closed.]
Care and Cleaning (Models: FTX09NMVJU / FTX12NMVJU / FTXN09NMVJU / FTXN12NMVJU) - Titanium apatite photocatalytic air-purifying filter
- Open the front panel and pull out the air filters. Page 20
- Take off the titanium apatite photocatalytic air-purifying filters. Remove the filters from the tabs. [Diagram description: Image showing how to unhook the filter from the tabs.]
- Clean or replace the titanium apatite photocatalytic air-purifying filters.
- [Cleaning] Vacuum dust, and soak in lukewarm water or water for about 10 to 15 minutes if very dirty. Do not remove the filter from the frame when washing with water. [Diagram description: Image of a filter being soaked in a basin of water.]
- [Replacement] Remove the filter from the filter frame and prepare a new one. Dispose of the old filter as non-flammable waste.
- Insert the titanium apatite photocatalytic air-purifying filters as they were. When attaching the filter, check that the filter is properly set in the tabs.
- Reattach the filters. Page 20
- Close the front panel slowly. Page 20
NOTE
- Operation with dirty filters: cannot deodorize the air, cannot clean the air, results in poor heating or cooling, may cause odor.
- Dispose of old filters as non-flammable waste.
- To order a titanium apatite photocatalytic air-purifying filter, contact the dealer where you bought the air conditioner.
Item: Titanium apatite photocatalytic air-purifying filter 1 set
Part No.: KAF970A46 (without frame)
Care and Cleaning (Models: FTX15NMVJU / FTX18NMVJU / FTX24NMVJU / FTXN18NMVJU / FTXN24NMVJU)
CAUTION: Before cleaning, be sure to stop the operation and turn off the circuit breaker. Do not touch the aluminum fins of the indoor unit. If you touch those parts, this may cause an injury.
Quick reference
Cleaning parts
Front panel
- Wipe it with a soft damp cloth.
- Only neutral detergent may be used.
Air filter
- Vacuum dust or wash the filter.
- Once every 2 weeks. Page 23
Indoor unit, outdoor unit and remote controller
- Wipe them with a soft cloth.
Titanium apatite photocatalytic air-purifying filter (with frame)
- Vacuum dust or replace the filter.
- [Cleaning] Once every 6 months. Page 24
- [Replacement] Once every 3 years. Page 24
*FTXN18/24NMVJU: Sold separately.
NOTE
For cleaning, do not use any of the following:
- Water hotter than 104°F (40°C)
- Volatile liquid such as benzene, petrol and thinner
- Polishing compounds
- Rough materials such as a scrubbing brush
Air filter cleaning steps
- Open the front panel. Hold the front panel by the sides and open it. [Diagram description: Image showing the front panel of the indoor unit being opened.]
- Pull out the air filters. Push the filter tab at the center of each air filter a little upwards, then pull it down. [Diagram description: Image showing how to push the filter tab and pull down the air filter.]
- Wash the air filters with water or clean them with vacuum cleaner. It is recommended to clean the air filters every 2 weeks.
- If the dust does not come off easily: Wash the air filters with neutral detergent thinned with lukewarm water, then dry them up in the shade. Be sure to remove the titanium apatite photocatalytic air-purifying filter. Refer to "Titanium apatite photocatalytic air-purifying filter" on the next page.
- Reattach the filters.
- Close the front panel slowly. Press the front panel at both sides and in the central area. Make sure that the front panel is securely fixed. [Diagram description: Image showing the front panel being closed.]
Care and Cleaning (Models: FTX15NMVJU / FTX18NMVJU / FTX24NMVJU / FTXN18NMVJU / FTXN24NMVJU) - Titanium apatite photocatalytic air-purifying filter
- Open the front panel and pull out the air filters. Page 23
- Take off the titanium apatite photocatalytic air-purifying filters. Hold the recessed parts of the frame and unhook the 4 claws. [Diagram description: Image showing how to unhook the filter from the frame using the claws.]
- Clean or replace the titanium apatite photocatalytic air-purifying filters.
- [Cleaning] Vacuum dust, and soak in lukewarm water or water for about 10 to 15 minutes if very dirty. Do not remove the filter from the frame when washing with water. [Diagram description: Image of a filter being soaked in a basin of water.]
- [Replacement] Remove the filter from the filter frame and prepare a new one. Reuse the filter frame when replacing the titanium apatite photocatalytic air-purifying filter. Dispose of the old filter as non-flammable waste.
- Insert the titanium apatite photocatalytic air-purifying filters as they were. When attaching the filter, check that the filter is properly set in the tabs.
- Reattach the filters. Page 23
- Close the front panel slowly. Page 23
NOTE
- Operation with dirty filters: cannot deodorize the air, cannot clean the air, results in poor heating or cooling, may cause odor.
- Dispose of old filters as non-flammable waste.
- To order a titanium apatite photocatalytic air-purifying filter, contact the dealer where you bought the air conditioner.
Item: Titanium apatite photocatalytic air-purifying filter 1 set
Part No.: KAF970A46 (without frame)
KAF970A45 (with frame)*
*Users of FTXN18/24NMVJU, please purchase KAF970A45 (with frame) when purchasing the filter for the first time.
Care and Cleaning (All models) - Prior to a long period of non-use
- Operate the FAN ONLY mode for several hours to dry out the inside. Press ⏨ (FAN ONLY).
- After operation stops, turn off the circuit breaker for the room air conditioner.
- Take out the batteries from the remote controller.
We recommend periodical maintenance
- In certain operating conditions, the inside of the air conditioner may get foul after several seasons of use, resulting in poor performance. It is recommended to have periodical maintenance by a qualified contractor in addition to regular cleaning by the user.
- For qualified contractor maintenance, please contact the dealer where you bought the air conditioner.
When the Need Arises
FAQ
Indoor unit
The flap does not start swinging immediately.
- The air conditioner is adjusting the position of the flap. The flap will start moving soon.
The air conditioner stops generating airflow during HEAT operation.
- Once the set temperature is reached, the airflow rate is reduced and operation stopped in order to avoid generating a cool airflow. Operation will resume automatically when the indoor temperature falls.
HEAT operation stops suddenly and a flowing sound is heard.
- The outdoor unit is defrosting. HEAT operation starts after the frost on the outdoor unit has been removed. This can take about 4 to 12 minutes.
Operation does not start soon.
- When ⌞ (AUTO) or any direct operation button was pressed soon after operation was stopped.
- When the mode was reselected.
- This is to protect the air conditioner. You should wait for about 3 minutes.
Different sounds are heard.
A sound like flowing water
- This sound is generated because the refrigerant in the air conditioner is flowing.
- This is a pumping sound of the water in the air conditioner and can be heard when the water is pumped out from the air conditioner during COOL or DRY operation.
Blowing sound
- This sound is generated when the flow of the refrigerant in the air conditioner is switched over.
Ticking sound
- This sound is generated when the cabinet and frame of the air conditioner slightly expand or shrink as a result of temperature changes.
Whistling sound
- This sound is generated when refrigerant flows during defrosting operation.
Clicking sound during operation or idle time
- This sound is generated when the refrigerant control valves or the electrical parts operate.
Clopping sound
- This sound is heard from the inside of the air conditioner when the exhaust fan is activated while the room doors are closed. Open the window or turn off the exhaust fan.
Outdoor unit
Operating sound is loud.
- When frost forms on the heat exchanger of the outdoor unit, the operating sound level increases slightly.
The outdoor unit emits water or steam.
- In HEAT operation: The frost on the outdoor unit melts into water or steam when the air conditioner is in defrosting operation.
- In COOL or DRY operation: Moisture in the air condenses into water on the cool surface of the outdoor unit piping and drips.
Troubleshooting
The air conditioner does not operate
| Case | Description / what to check |
|---|---|
| OPERATION lamp is off. |
|
| OPERATION lamp is blinking. |
|
The air conditioner suddenly stops operating
| Case | Description / what to check |
|---|---|
| OPERATION lamp is on. |
|
| OPERATION lamp is blinking. |
|
The air conditioner does not stop operating
| Case | Description / what to check |
|---|---|
| The air conditioner continues operating even after operation is stopped. |
|
The room does not cool down / warm up
| Case | Description / what to check |
|---|---|
| Air does not come out. |
|
| Air does not come out / Air comes out. |
|
| Air comes out. |
|
Mist comes out
| Case | Description / what to check |
|---|---|
| Mist comes out of the indoor unit. | This happens when the air in the room is cooled into mist by the cold airflow during COOL or other operation. |
Remote controller
| Case | Description / what to check |
|---|---|
| The unit does not receive signals from the remote controller or has a limited operating range. |
|
| LCD is faint, is not working, or the display is erratic. |
|
| Other electric devices start operating. | If the remote controller activates other electric devices, move them away or consult your dealer. |
Air has an odor
| Case | Description / what to check |
|---|---|
| The air conditioner gives off an odor. | The room odor absorbed in the unit is discharged with the airflow. We recommend you to have the indoor unit cleaned. Please consult your dealer. |
Others
| Case | Description / what to check |
|---|---|
| The air conditioner suddenly starts behaving strangely during operation. | The air conditioner may malfunction due to lightning or radio. If the air conditioner malfunctions, turn off the power with the circuit breaker and restart the operation with the remote controller. |
Notes on the operating conditions
- If operation continues under any conditions other than those listed in the table, a safety device may activate to stop the operation.
- Dew may form on the indoor unit and drip from it when COOL or DRY operation is selected.
| Mode | Operating conditions |
|---|---|
| COOL/DRY | Outdoor temperature: 50-115°F (10-46°C) Indoor temperature: 64-90°F (18-32°C) Indoor humidity: 80% max. |
| HEAT | Outdoor temperature: [RX, RXN]: 5-75°F (-15-24°C) [RXL]: -13-75°F (-25-24°C) Indoor temperature: 50-86°F (10-30°C) |
Troubleshooting
Call your dealer immediately
WARNING: When an abnormality (such as a burning smell) occurs, stop operation and turn off the circuit breaker.
- Continued operation in an abnormal condition may result in problems, electric shock or fire.
- Consult the dealer where you bought the air conditioner.
Do not attempt to repair or modify the air conditioner by yourself.
- Incorrect work may result in electric shock or fire.
- Consult the dealer where you bought the air conditioner.
If one of the following symptoms takes place, call your dealer immediately.
- The power cord is abnormally hot or damaged.
- An abnormal sound is heard during operation.
- The circuit breaker, a fuse, or the ground fault circuit interrupter cuts off the operation frequently.
- A switch or a button often fails to work properly.
- There is a burning smell.
- Water leaks from the indoor unit.
Turn off the circuit breaker and call your dealer.
After a power failure
- The air conditioner automatically resumes operation in about 3 minutes. You should just wait for a while.
Lightning
- If there is a risk lightning could strike in the neighborhood, stop operation and turn off the circuit breaker to protect the system.
Disposal requirements
- Dismantling of the unit, handling of the refrigerant, oil and other parts, should be done in accordance with the relevant local and national regulations.
Fault diagnosis by remote controller
The remote controller can receive relevant error codes from the indoor unit.
- When ⌦ (CANCEL) is held down for about 5 seconds, "00" blinks in the temperature display section.
- Press ⌦ (CANCEL) repeatedly until a continuous beep is produced.
The code indication changes as shown below, and notifies you with a long beep.
| CODE | SYSTEM | INDOOR UNIT | OUTDOOR UNIT | MEANING |
|---|---|---|---|---|
| 00 | NORMAL | |||
| UA | INDOOR-OUTDOOR UNIT COMBINATION FAULT | |||
| U0 | REFRIGERANT SHORTAGE | |||
| U2 | DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE | |||
| U4 | FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT) | |||
| A1 | INDOOR PCB DEFECTIVENESS | ✔ | ||
| A5 | HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR | ✔ | ||
| A6 | FAN MOTOR FAULT | ✔ | ||
| C4 | FAULTY HEAT EXCHANGER TEMPERATURE SENSOR | ✔ | ||
| C9 | FAULTY SUCTION AIR TEMPERATURE SENSOR | ✔ | ||
| EA | COOLING-HEATING SWITCHING ERROR | ✔ | ||
| E1 | CIRCUIT BOARD FAULT | ✔ | ||
| E5 | OL STARTED | ✔ | ||
| E6 | FAULTY COMPRESSOR START UP | ✔ | ||
| E7 | DC FAN MOTOR FAULT | ✔ | ||
| E8 | OVERCURRENT INPUT | ✔ | ||
| F3 | HIGH TEMPERATURE DISCHARGE PIPE CONTROL | ✔ | ||
| F6 | HIGH PRESSURE CONTROL (IN COOLING) | ✔ | ||
| H0 | SENSOR FAULT | ✔ | ||
| H6 | OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR | ✔ | ||
| H8 | DC CURRENT SENSOR FAULT | ✔ | ||
| H9 | FAULTY SUCTION AIR TEMPERATURE SENSOR | ✔ | ||
| J3 | FAULTY DISCHARGE PIPE TEMPERATURE SENSOR | ✔ | ||
| J6 | FAULTY HEAT EXCHANGER TEMPERATURE SENSOR | ✔ | ||
| L3 | ELECTRICAL PARTS HEAT FAULT | ✔ | ||
| L4 | HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK | ✔ | ||
| L5 | OUTPUT OVERCURRENT | ✔ | ||
| P4 | FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR | ✔ |
NOTE
- A short beep indicates non-corresponding codes.
- To cancel the code display, hold ⌦ (CANCEL) down for about 5 seconds. The code display also clears if no button is pressed for 1 minute.
Manufacturer Information
GOODMAN MANUFACTURING COMPANY, L.P.
5151 San Felipe, Suite 500
Houston, TX 77056 USA
DAIKIN INDUSTRIES, LTD.
Head office:
Umeda Center Bldg., 2-4-12, Nakazaki-Nishi,
Kita-ku, Osaka, 530-8323 Japan
Tokyo office:
JR Shinagawa East Bldg., 2-18-1, Konan,
Minato-ku, Tokyo, 108-0075 Japan
http://www.daikin.com
[Intertek certification mark description]
[Two-dimensional bar code description: a manufacturing code.]
