FUJITSU 9387602227 Air Conditioner Instruction Manual

9387602227 Air Conditioner
Instruction Manual 

Before using this product, read these instructions thoroughly and keep this manual for future reference.

MODEL:
* Write down the model name.
(Refer to the rating label.)

SAFETY PRECAUTIONS

To prevent personal injury or property damage, read this section carefully before you use this product, and be sure to comply with the following safety precautions.
Incorrect operation due to failure to follow the instructions may cause harm or damage, the seriousness of which is classifi ed as follows:

WARNING
This mark warns of death or serious injury.
CAUTION
This mark warns of injury or damage to property.
This mark denotes an action that is PROHIBITED.
This mark denotes an action that is COMPULSORY.

WARNING

• This product contains no user-serviceable parts.
  Always consult authorized service personnel for repair, installation, and relocation of this product.
  Improper installation or handling will cause leakage, electric shock, or fi re.
• In the event of a malfunction such as a burning smell, immediately stop the operation of the air conditioner, and disconnect all the power supply by turning off the electrical breaker or disconnecting the power plug.
  Then consult authorized service personnel.
• Take care not to damage the power supply cable.
  If it is damaged, it should be replaced only by authorized service personnel in order to avoid a hazard.
• If a refrigerant leakage is suspected, all naked flames shall be removed or extinguished, and consult authorized service personnel.
• In the event of a thunderstorm or any prior sign of a lightning strike, turn off the air conditioner via the remote controller, and refrain from touching the product or the power source to prevent any electrical hazards.
• This product is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge unless they have been given supervision or instruction concerning the use of this product by a person responsible for their safety. Children should be supervised to ensure that they do not play with this product.
• Dispose of the packing materials safely. Tear and dispose of the plastic packing bags so that children cannot play with them. There is a danger of suffocation if children play with the original plastic bags.
• Do not start or stop the operation of this product by inserting or pulling out the power plug, or by turning on or off the circuit breaker.
• Do not use flammable gases near this product.
• Do not expose yourself directly to the cooling airflow for many hours.
• Do not insert your fingers or any other objects into the outlet port or inlet port.
• Do not operate with wet hands.

CAUTION

• Provide occasional ventilation during use.
• Always operate this product with air fi lters installed.
• Ensure that any electronic equipment is at least 40 in (1 m) away from this product.
• Disconnect all the power supply when not using this product for extended periods.
• After a long period of use, ensure to get the mounting of the indoor unit checked to prevent this product from falling down.
• The airfl ow direction and the room temperature should be carefully considered when you use this product in a room with infants, children, elderly or sick persons.
• Keep the surroundings of the outdoor unit clean and tidy, and do not place items around it. Any objects blocking or entering from the outlet ports may cause product malfunction.
• Do not direct the airfl ow at fireplaces or heating apparatus.
• Do not block or cover the intake grille and the outlet port.
• Do not apply any heavy pressure to the radiator fins.
• Do not climb on, place objects on, or hang objects from this product.
• Do not place any other electrical products or household belongings under this product. Dripping condensation from this product might get them wet, and may cause damage or malfunction of your property.
• Do not expose this product directly to water.
• Do not use this product for the preservation of food, plants, animals, precision equipment, artwork, or other objects.
  This may cause quality deterioration of those items.
• Do not expose animals or plants to the direct airfl ow.
• Do not drink the drainage from the air conditioner.
• Do not pull the power supply cable.
• Do not touch the aluminum fi ns of the heat exchanger built in this product to avoid personal injury when you maintain the unit.
• Do not stand on unstable steps when operating or cleaning this product. It may overturn and can cause injury.

PREPARATION

WARNING

• Take care to prevent infants and young children from accidentally swallowing the batteries.

CAUTION

• If leaking battery fluid comes in contact with your skin, eyes, or mouth, immediately rinse with plenty of clean water, and consult your physician.
• Exhausted batteries must be removed immediately, and be disposed of according to the local laws and regulations of your region.
• Do not attempt to recharge dry batteries.
• Do not use dry batteries that have been recharged.

Indoor unit accessories 

Check that the following accessories are included.

Remote controller holder installation 

NAME OF PARTS

CAUTION

For appropriate signal transmission between the remote controller and the indoor unit, keep the signal receiver away from the following items:

• Direct sunlight or other strong lights
• Flat-panel television screen
  In rooms with instantaneous fl fluorescent lights, such as inverter-type ones, the signal may not be transmitted properly. In such a case, consult the store of purchase.

3.1. Remote controller
CAUTION

• To prevent malfunction or damage of the remote controller:
• Place remote controller at where will not be exposed to direct sunlight or excessive heat.
• Remove batteries if the product is not going to be used for an extended period.
• Obstacles such as a curtain or wall between the remote controller and the indoor unit may affect the appropriate signal transmission.
• Do not apply strong shocks to the remote controller.
• Do not pour water on the remote controller.

When you use the optional remote controller, the appearance and the operation procedure may differ.
For details, refer to the operation manual of each remote controller.

3.2. Inserting batteries

Battery type: R03/LR03/AAA × 2

1~3. Put batteries as shown in the fi gure above.
Press as shown in the fi gure above.
NOTES:

• Use specifi ed types of batteries only.
• Do not mix different types of new and used batteries together.
• Batteries can be used for about 1 year in ordinary use.
• If the remote control range noticeably shortens, replace the batteries, and presses shown in the fi gure above.

3.3. Indoor unit 

: The instruction is related to the wireless LAN control (optional).

1. Before starting the operation, make sure that the intake grille is closed completely. Incomplete closing may affect the proper function or performance of the product.
2. Indicator lamps light in the following conditions.

BASIC OPERATIONS

3 steps to start operation

1. Press/I to start or stop the operation.
2. Press MODEto select the operation mode.
   The operation mode changes as follows.
   
3. Press to set the desired temperature. The temperature changes by 1 °F (0.5 °C) increments.

NOTES:

• In the Cooling or Dry mode, set the temperature lower than the current room temperature.
• In the Heating mode,
  – set the temperature higher than the current room temperature.
  – at the beginning of the operation, the indoor unit fan rotates at very low speed for 3-5 minutes.
  – the Automatic defrosting operation overrides the Heating operation when necessary.
• In the Fan mode, temperature control is not available.

■ Temperature unit switching
(Factory setting: °F) Each time you press °F /ºC, the temperature unit switches (°F ⇔ °C).
AIRFLOW SETTINGS

5.1. Fan speed setting
Press FAN SPEED to control the fan speed.
The fan speed changes as follows.
When AUTO is selected, the fan speed depends on the operating condition.
NOTE: In the Dry mode, the fan speed is fixed to AUTO.

5.2. Airfl ow direction setting
For details of the airfl ow ranges, refer to “Airfl ow direction range”.

• Up/down airfl ow direction setting
  Press to adjust the up/down airfl ow direction.
• Left/right airfl ow direction setting
  Press to adjust the left/right airfl ow direction.
• Swing operation setting
  Press SWING to select the Swing operation.

The Swing operation changes as follows. 

NOTE: The Swing operation may stop temporarily when the indoor unit fan is rotating at very low speed or is stopped.

Airfl ow direction range
Up/down airfl ow direction 

• The Swing operation range depends on the airfl ow direction set before the Swing operation.

NOTES:

• Do not adjust the horizontal louvers by hand.
• In the Auto or Heating mode, the airfl ow direction stays at position 1 for a while from the start of the operation.
• In the Cooling or Dry mode, position 1-3 is recommended to prevent condensation drips from damaging your property. If position 4-6 keeps for 30 minutes or more in these modes, the airfl ow direction changes to position 3 automatically.
• When using the mobile app (an optional WLAN adapter is necessary), the up/down airfl ow can be selected from 4 positions.

Left/right airfl ow direction

NOTE: In the Auto mode operation, you cannot change the airflow direction for a while from the start of the operation.

TIMER OPERATIONS

NOTE: When [ ] indicator on the indoor unit blinks, set the clock and timer again. This blinking shows that the internal clock goes wrong due to an interruption of the power supply.

■ Timer setting procedure

1. Pressto choose timer operation. Each time you press the button, the timer operation will change as follows:
   

   Off timer	Stops the operation at your desired time.
   On timer	Starts the operation at your desired time.
   Program timer	Operates as the combination of the On timer and Off timer.
   Cancel	Deactivate the timer.

   • If you choose “Cancel”, the display returns to the operation display.
   • To set a sleep timer, press SLEEP. (Refer to “6.3. Sleep timer”.)

2. Set each timer operation.
   For details, refer to the following instructions of each timer setting.

6.1. On timer or Off timer

1. Select On timer or Off timer in step 1 of “Timer setting procedure.”
2. Each time you press, the time changes as follows:

• When you use the On timer, set the time while the indicator on the remote controller display is blinking.
• When you use the Off timer, set the time while the indicator on the remote controller display is blinking.
• To deactivate the On/Off timer, select Cancel in step 1 of “Timer setting procedure” while [ ON] or [ OFF] is shown on the remote controller display. The indicator will disappear.

NOTE: If you set the Sleep timer after setting the On/Off timer, the On/Off timer is canceled.

6.2. Program timer

1. Set On Timer and Off timer. (Refer to “6.1. On timer or Off timer”.)
2. Select Program timer in step 1 of “Timer setting procedure”.
   After the time set by the earlier timer passed, the timer set later will begin the counting down.
   The order of the timer operation is displayed as follows:

NOTE: If you set the Sleep timer after setting the Program timer, the Program timer is canceled.

6.3. Sleep timer
The Sleep timer supports your comfortable sleep by moderating the air conditioner operation gradually.

Press SLEEP.
Each time you press the button, the time changes as follows:

To repeat the timer, press the button when the SLEEP indicator is not displayed.
During the Sleep timer operation, the setting temperature changes as the following fi gure.

After the set time has elapsed, the air conditioner operation turns off.

ENERGY SAVING OPERATION

7.1. Economy operation
It saves more electricity than other operation modes by changing the set temperature to a moderate setting.
Press to activate/deactivate the Economy operation.
[ ] indicator on the indoor unit will turn on.

NOTES:

• In the Cooling, Heating, or Dry mode, the maximum output of this operation is approximately 70 % of the usual operation.
• This operation cannot be performed during the temperature monitoring by the Auto mode.

7.2. Fan control for energy saving 

In the Cooling operation, when the room temperature reaches the set temperature, the indoor unit fan rotates intermittently to save power. (This function is deactivated at the  time of purchase.)
To change the setting, use the following steps;

1. Press until the indicators on the remote controller turn off.
2. Press and hold FAN SPEED for more than 5 seconds.
   The and the current status will appear.
   ON: Activated
   OFF: Deactivated
3. Press to switch the status.
4. Press to send the set to the indoor unit.
   The display will return to the original screen.

NOTE: If you do not press any buttons for 30 seconds after are displayed, will turn off. In this case, repeat the setting from step 2.

OTHER OPERATIONS

8.1. Powerful operation
In the Powerful operation, the air conditioner will operate at maximum power and strong airfl ow to cool down or warm up the room quickly.

Press POWERFULL to activate/deactivate the Powerful operation.
When activated, the indoor unit will emit 2 short beeps.
When deactivated, the indoor unit will emit 1 short beep.
The Powerful operation will be turned off automatically in the following situations:

• The Powerful operation runs for a certain amount of time and the
  room temperature reaches the set temperature in the Cooling, Dry,
  or Heating mode.
• 20 minutes after the Powerful operation has started.

NOTES:

• The airfl ow direction and the fan speed are controlled automatically.
• The Powerful operation cannot be performed simultaneously with the Economy operation.
• If the wired remote controller (optional) is connected, this function is restricted.

8.2. Minimum heat operation (optional)

NOTE:

• This function is available only by the wireless LAN control (optional).
  Minimum heat operation maintains the room temperature at 50 °F (10 °C) so as to prevent the room temperature to drop too low.
  – When activated, [ ] indicator on the indoor unit will turn on.
  – When deactivated, [ ] indicator will turn off.

NOTES:

• During the Minimum heat operation, only the up/down and left/right airfl ow direction settings are valid.
• When the room temperature is warm enough, This operation will not be performed.

SETTINGS ON INSTALLATION

9.1. Remote controller custom code setting
By setting the custom code of the indoor unit and remote controller, you can specify the air conditioner which the remote controller controls.
When two or more air conditioners are in the room and you wish to operate them separately, set the custom code (4 selections possible).
NOTE: If custom codes is different between the indoor unit and the remote controller, the indoor unit cannot receive a signal from the remote controller.

How to set the remote controller custom code

1. Pressuntil the indicators on the remote controller turn off.
2. Press down MODE for more than 5 seconds.
   The current custom code will be displayed (initially set to A).
3. Press to change the custom code between
   * Match the custom code on the display to the air conditioner custom code.
4. Press MODE again.
   The custom code will be set.
   The display will return to the original display.
   

• To change the air conditioner custom code, contact authorized service personnel (initially set to A).
• If you do not press any buttons for 30 seconds after the custom code is displayed, the displayed custom code is set and the display returns to the original display.
• Depending on the remote controller, the custom code may return to A when replacing the batteries. In this case, reset the custom code as necessary. If you do not know the air conditioner custom code, try each code until you find the code which operates the air conditioner.

CLEANING AND CARE

CAUTION

• Before cleaning this product, be sure to turn it off and disconnect all the power supply.
• Before starting the operation, make sure that the intake grille has been shut completely. Incomplete closing of the intake grille might have an effect on the proper working or performance of the air conditioner.
• If the fi lter cleaning involves high-place work, consult the authorized service personnel.
• Do not touch the aluminum fi ns of the heat exchanger built-in in the indoor unit to avoid personal injury when you maintain the unit.
• Do not expose the indoor unit to liquid insecticides or hair sprays.
• Do not stand on slippery, uneven, or unstable surfaces when you maintain the unit.
  

The frequency of the cleaning is shown in the following table.

• The air cleaning fi lters are sold separately. When you replace them, contact the store of purchase.

Cleaning the indoor unit body
NOTES:

• Do not use water hotter than 104 °F (40 °C).
• Do not use scouring cleanser or volatile solvents such as benzene or thinner.
  1. Wipe the indoor unit body gently with a soft cloth moistened with warm water.
  2. Wipe the indoor unit body gently with a dry and soft cloth.

Cleaning air filter

1. Open the intake grille until it snaps.
   
2. Remove the air filters.
   Lift up the air filters’ handle, disconnect the two lower tabs, and pull out.
   
3. Remove the dust in either of the following ways.
   • Cleaning with a vacuum cleaner.
   • Washing with mild detergent and warm water. After washing, dry the air filters thoroughly in shade.
4. Replace the air fi lters.
   Align the sides of the air fi lter with the panel, and push in fully.
   Make sure to the two lower tabs are returned to their holes in the indoor unit properly.
5. Close the intake grille.
   Press 4 places on the intake grille to close it completely.
   

NOTE: If dirt accumulates on the air fi lter, airfl ow will be reduced, operating efficiency will lower, and the noise will increase.

Cleaning Ion deodorization fi lter and Replacing Apple-catechin filter

1. Remove the air fi lters. Refer to steps 1 ~ 2 of “Cleaning air filter”.
2. Remove the air cleaning fi lters from the air cleaning filter holders.
   
3. Flush the Ion deodorization fi lter with high-pressure hot water until the surface of the filters are covered with water.
4. Wash the Ion deodorization fi lter with a diluent neutral detergent.
   Do not ream or rub, otherwise, the deodorizing effect may decrease.
5. Rinse the Ion deodorization fi lter with water flow.
6. Dry the Ion deodorization fi lter in shade.
7. Set the new or washed air cleaning fi lters into the air cleaning fi lter holders.
   NOTE: Use the Apple-catechin fi lter as soon as possible after opening the package. The air cleaning effect decreases when the fi lters are left in the opened package.
8. Install the air cleaning fi lter holders to the air fi lters.
   Engage the 4 hooks at the rear of the air cleaning fi lter holder with the latch at both ends of the air filter.
   NOTE: Take care that the air cleaning fi lter does not project beyond the holder.
9. Replace the air fi lters and close the intake grille. Refer to steps 4 ~ 5 of “Cleaning air filter”.

Removing and installing intake grille
Removing intake grille

1. Open the intake grille until it snaps.
2. Pull the mounting shafts while keeping the intake grille in a horizontal position.

■ Installing intake grille

1. While holding the intake grille horizontal, set the left and right mounting shafts into the pillow blocks at the top of the front panel.
   Insert the shaft until it snaps to latch each shaft properly.
2. Close the intake grille.
3. Press 4 places on the intake grille to close it completely.
   

GENERAL INFORMATION

Heating performance
This air conditioner operates on the heat-pump principle, absorbing heat from air outdoors and transferring that heat to the indoor unit. As a result, the operating performance is reduced as outdoor air temperature drops.
If you feel that the heating performance is insuffi cient, we recommend you to use this air conditioner in conjunction with other kinds of heating appliances.

Automatic defrosting operation
When the outdoor temperature is very low with high humidity, frost may form on the outdoor unit during the heating operation, and it could reduce the operating performance of the product.
For frost protection, an automatic defrost function is equipped in this air conditioner.
If frost forms, the air conditioner will temporarily stop, and defrost circuit will operate briefl y (maximum of 15 minutes.)
[ ] indicator on the indoor unit blinks during this operation.
If frost forms on the outdoor unit after the Heating operation, the outdoor unit will stop automatically after it operates for a few minutes. Then the Automatic defrosting operation starts.

Auto-restart function
In event of a power interruption such as a blackout, the air conditioner stops once. But it restarts automatically and performs the previous operations when the power supply is resumed.
If any power interruption occurs after the timer is set, the counting down of the timer will be reset.
After the power supply is resumed, the [] indicator on the indoor unit blinks to notify you that there has been a timer fault. In such a case, reset the clock and timer settings.

Malfunctions caused by other electrical devices
Use of other electrical appliances such as an electric shaver or nearby use of a wireless radio transmitter may cause the malfunction of the air conditioner.
If you encounter such a malfunction, turn off the circuit breaker once.
Then turn it on again, and resume operation by using the remote controller.

Indoor unit temperature and humidity range
Permissible ranges of temperature and humidity are as follows:

*1) If the air conditioner is used continuously for many hours, water may condense on the surface and drip.

• If the unit is operated under conditions except for the permissible temperature range, the air conditioner operation may stop because of the automatic protection circuit working.
• Depending on the operating conditions, the heat exchanger may freeze, causing water leakage or other malfunction (in the Cooling or Dry mode).

Other information

• Do not use the air conditioner for any purpose other than room cooling/drying, room heating, or fan.
• For the permissible ranges of temperature and humidity for the outdoor unit, refer to the outdoor unit installation manual.

Emergency heat (Special setting)
An auxiliary heater can be used instead of the outdoor unit if the auxiliary heater is connected and the function is set correctly during installation.
Consult authorized service personnel to use this function.
To activate/deactivate this function, Press on the indoor unit for 2
seconds or less during the Heating operation. (Refer to page 4.)
During the Emergency heat operation, [] indicator lamp will blink (3 seconds on, 1 second off).

OPTIONAL PARTS

12.1. Wired remote controller
The optional wired remote controller can be used.
You can use wired and wireless remote controllers together.
However, some functions of the wireless remote controller are restricted.
If you set the restricted functions, a beeping sound will be heard, [], [ ], [ ] and [ ] indicator on the indoor unit will blink.
<Restricted functions for wireless remote controller>
When used together with a wired remote controller (2-wire)

Powerful operation
You can use a wired remote controller and wireless LAN control together (optional).
However, some operations from the mobile app are restricted.
Multiple remote controllers, You can connect two wired remote controllers to one air conditioner.
Either remote controller can control the air conditioner.
However, the timer functions cannot be used by the secondary unit.

Group control
One remote controller can control up to 16 air conditioners. All of the air conditioners will be operated with the same settings.
You cannot use group control and wireless LAN control together.

12.2. Wireless LAN control
To use the wireless LAN control, the WLAN adapter and mobile app are necessary.
For how to operate the mobile app, refer to the operation manual of the mobile app.
Write down the SSID and the PIN code in the following table.

Information on WLAN adapter

Google Play is a registered trademark of Google Inc.
App Store is a service mark of Apple Inc., registered in the U.S. and other countries.

Setting to use wireless LAN control
Step 1. Application software installation

1. Open “Google Play” or “App Store” depending on the type of your smartphone or tablet PC.
2. Search for “fair”.
3. Install the application software (mobile app) following the instructions on your screen.

Step 2. User registration

1. Open the installed mobile app.
2. Register the user (with either a smartphone or tablet PC) by following the instructions in the create an account section of the mobile app.

Step 3. Installing WLAN adapter

CAUTION

• Be sure to turn off the power supply of the air conditioner when installing or removing this product to avoid the risk of electric shock.
• Do not put fingers, sticks, etc. in the connection part of this product and the connection slot of the indoor unit.
  Otherwise, electric shock or damage to the product may occur.
• Do not stand on an unstable platform when installing or removing this product to avoid injury.

1. Be sure to turn air conditioner off and to disconnect all the power supply.
2. Open the intake grille.
   
3. Open the WLAN adapter cover until it snaps.
   
4. Plug the WLAN adapter into the connection slot of the indoor unit in the direction as shown in the fi gure.
   
5. Close the WLAN adapter cover and the intake grille.

Step 4. Air conditioner registration (pairing of WLAN adapter)
NOTES:

• Before starting this setting, reconnect the power supply of the air conditioner and wait for 60 seconds or more.
• Check that the smartphone or tablet PC is linked to the access point you are connecting to the air conditioner. The setting will not work if it is not connected to the same access point.
• To control 2 or more air conditioners with the same smartphone or tablet PC, repeat the setup of the chosen model.
  Register the air conditioner by following the instructions on the mobile app.
  This operation manual describes only the setting procedure of the remote controller.

When the registration is completed, the []indicator on the indoor unit will turn on.

For reference
<Manual connection>
Setting procedure of the remote controller
NOTE: If you do not press any buttons on the remote controller for 60 seconds, the remote controller display will return to the original display.

1. Press 2 times as shown in page 3.
   L2 will be displayed on the remote controller display.
   
2. Press.
3. Make sure that “01 ” is shown on the remote controller display. If “ 02” is shown, press to select “01 ”,
   
4. Press.
   The indoor unit enters the Manual connection mode and the [] indicator on the indoor unit will blink.
   NOTE: If the registration is not finished in several minutes, the Manual mode is canceled, and the [] indicator turns off.
   In this case, repeat the remote controller setting.

<Easy connection>
Setting procedure of the remote controller
NOTE: If you do not press any buttons of the remote controller for 60 seconds, the remote controller display will return to the original display.

1. Press 2 times as shown in page 3.
   L2 will be displayed on the remote controller display.
   
2. Press.
3. Select 02 using.
4. Press.
   The indoor unit enters the Easy connection mode and the []indicator on the indoor unit will blink (on/off = 1 s/1 s).
   When the WLAN adapter find a connectable access point, the blinking will become slower (on/off = 2 s/0.5 s).
   NOTE: If the connection to the access point is not finished in several minutes, the Easy connection mode is canceled, and the [] indicator turns off.
   In this case, repeat the remote controller setting.

Temporary deactivation of wireless LAN
NOTE: If you do not press any buttons on the remote controller for 60 seconds, the remote controller display will return to the original display.

1. Press with the tip of a ballpoint pen or other small object. “” will appear.
   
2. Press.
   The current status will appear.

   	Activated
   	Deactivated

3. Select using.
4. Press.
   [] indicator on the indoor unit will turn off.
   * If you want to activate wireless LAN control again, select “ON” at step 3.

Initialization (reset)
Initialize (reset) this product in the following situations:

• Changing the access point
• Disposing of this product
• Transferring this product to a third party

Unregister the air conditioner
Unregister the air conditioner by using the mobile app. (Refer to the operation manual of the mobile app for details.)
Initialization of the WLAN adapter
NOTE: If you do not press any buttons on the remote controller for 60 seconds, the remote controller display will return to the original display.

1. Press 3 times as shown in page 3. L3 will be displayed on the remote controller display.
   
2. Press.
   “In ” will appear.
3. Press and hold for more than 5 seconds.
   [] indicator on the indoor unit will blink fast, then turn off.

To continue use
If you or a third party wishes to continue the use of the product, follow the procedures in “Air conditioner registration (pairing of WLAN adapter)” to reconnect to a different access point.
NOTE: Wireless LAN setup is not possible if the previous owner did not unregister or initialize this product. In this case, contact your authorized service personnel.

Firmware update
CAUTION
Do not pull out the power plug nor turn off the circuit breaker during the fi rmware update of the indoor unit or WLAN adapter. It may cause malfunction.

For WLAN adapter
The fi rmware of the WLAN adapter may be updated automatically.
During the update, you cannot operate the air conditioner from the mobile app. It will take a maximum of 5 minutes.
For indoor unit
The fi rmware of the indoor unit may be updated. You can set the schedule of the updating or update the fi rmware manually from the mobile app. For details, refer to the operation manual for the mobile app.
During the update, the indicator lamps blink and the air conditioner stops operation. (Refer to “State of indicator lamps”.) It will take a maximum of 30 minutes.

TROUBLESHOOTING

In the following events, immediately stop the operation of the air conditioner, and disconnect all the power supply by turning off the electrical breaker or disconnecting the power plug. Then consult your dealer or authorized service personnel.
As long as the unit is connected to the power supply, it is not insulated from the power supply even if the unit is turned off.

• Unit smells of something burning or emits smoke
• Water leaks from the unit

Does not operate at all.

• Has there been a power outage?
  In this case, the unit restarts automatically after the power supply is resumed. (Refer to page 8.)
• Has the circuit breaker been turned off?
  ⇒ Turn on the circuit breaker.
• Has a fuse blown out or the circuit breaker been tripped?
  ⇒ Replace the fuse or reset the circuit breaker.
• Is the timer operating?
  ⇒ To check or deactivate the timer setting, refer to page 5.
• <When using the wireless LAN control> Is the WLAN adapter in a firmware update?
  During the fi rmware update of the WLAN adapter, you cannot operate the air conditioner from the mobile app. Operate from the remote controller or wait until the  update is complete (for a maximum of 5 minutes).
• <When using the wireless LAN control> Is the indoor unit in a fi rmware update?
  During the fi rmware update of the indoor unit, the air conditioner stops operation. Wait until the update is complete. (for a maximum of 30 minutes).

Poor cooling or heating performance.

• Is the unit operating under the conditions except for the permissible temperature range?
  In this case, the air conditioner may stop because of the automatic protection circuit working.
• Is the air fi lter dirty?
  ⇒ Clean the air fi lter. (Refer to page 7.)
• Is the intake grille or outlet port of the indoor unit blocked?
  ⇒ Remove the obstructions.
• Is the room temperature adjusted appropriately?
  ⇒ To change the temperature setting, refer to page 4.
• Is a window or door left opened?
  ⇒ Close the window or the door.
• Is the fan speed set to Quiet?
  ⇒ To change the fan speed, refer to page 4.
• <In the Cooling mode> Is direct or strong sunlight shining into the room?
  ⇒ Close the curtains.
• <In the Cooling mode>Are there other heating apparatus or computers operating, or too many people in the room?
  ⇒ Turn the heating apparatus or computers off, or set the temperature lower. (Refer to page 4.)

Humidity does not drop during the Dry operation.

• You cannot set the target humidity in the Dry mode. If you feel high humidity, set the temperature lower.

Airfl ow is weak or stops.

• Is the fan speed set to Quiet?
  ⇒ To change the fan speed, refer to page 4.
• Has the Fan Control for Energy Saving set? In this case, the indoor unit fan may stop temporarily while the Cooling operation.
  ⇒ To cancel the Fan control for energy saving, refer to page 6.
• <In the Heating mode> Have you just started the operation?
  In this case, the fan rotates at a very low speed temporarily to warm up the internal parts of the unit.
• <In the Heating mode> Is the room temperature higher than the set temperature?
  In this case, the outdoor unit stops and the indoor unit fan rotates at a very low speed.
• <In the Heating mode> Is [ ] indicator blinking?
  In this case, the Automatic defrosting operation is working. The indoor unit stops for a maximum of 15 minutes. (Refer to page 8.)
• <In the Dry mode> The indoor unit operates at low fan speed to adjust the room humidity and may stop from time to time.
• <In the Auto mode> While the monitoring operation, the fan rotates at a very low speed.

Noise is heard.

• Is the unit operating, or immediately after stopping operation? In this case, refrigerant fl owing sound may be heard. It may be particularly noticeable for 2-3 minutes after starting the operation.
• Do you hear a slight squeaking sound during the operation?
  This sound is produced by the minute expansion and contraction of the front panel caused by temperature change.
• <In the Heating mode> Do you hear a sizzling sound?
  This sound is produced by the Automatic defrosting operation.
  (Refer to page 8.)

Smell coming from the unit.

• The air conditioner may absorb various smells generated from interior textile, furniture, or cigarette smoke. These smells may be emitted during the operation.

Mist or steam is emitted from the unit.

• <In the Cooling or Dry mode> A thin mist may be generated by condensation formed with a sudden cooling process.
• <In the Heating mode> Is [] indicator on the indoor unit blinking?
  In this case, steam may rise from the outdoor unit because of the Automatic defrosting operation. (Refer to page 8.)
  The outdoor unit emits water.
• <In the Heating mode> The outdoor unit may emit water generated by the Automatic defrosting operation. (Refer to page 8.)
  The unit operates differently from the remote controller setting.
• Are the batteries in the remote controller exhausted?
  ⇒ Replace the batteries.
  Operation is delayed after the restart.
• Has the power supply turned from Off to On suddenly?
  In this case, the compressor will not operate for about 3 minutes to prevent a blowout of the fuse.

Immediately stop operation and turn off the electrical breaker in the following cases. Then consult authorized service personnel.

• The problem persists even if you perform these checks or diagnostics.
• On the indoor unit, [ ] and [ ] blink while [ ] is blinking fast.

NOTE: For any troubleshooting related to the wireless LAN control, refer to the setting manual for the WLAN adapter or the mobile app installed in your smartphone or tablet PC.

State of indicator lamps
: The instruction is related to the wireless LAN control (optional). Lighting pattern: Off, On, Blinking, Any state

Lighting pattern: Off, On, Blinking, Any state

Manual Auto operation and Filter indicator reset
You can operate the air conditioner on the indoor unit. (Refer to page 4.)

1. To stop the forced cooling, press this button or on the remote controller.
2. Refer to “Emergency heat (page 8)” for details.

Service check
If [ ] and [ ] blink while [ ] is blinking fast on the indoor unit, check the error code. The error code is 2-digit numbers or characters.

1. Press and hold for more than 5 seconds.
   The remote controller will enter to the Service check mode and “ will be shown.
2. Press TEM/SLECT   to change the shown error code.
   The indoor unit emits 1 short beep each time the error code changes.
   When the corresponding error code is shown, the indoor unit emits multiple beeps, and all the indicator lamps on the indoor unit blink.
   

To fi nish the Service check mode, press.
The remote controller will return to the original display.
Tell the error code to authorized service personnel when consulting them.
If the indoor unit emits multiple beeps at “00”, no error is detected.