Fujitsu Inverter Room Air Conditioner Operating Manual

Model: Wall Mounted Type, Heat & Cool Model (Reverse Cycle)

Indoor Unit Models: ASBA24LFC, ASBA30LFC

Outdoor Unit Models: AOBR24LFL, AOBR30LFT

Safety Precautions

DANGER!

Do not attempt to install this air conditioner by yourself.
This unit contains no user-serviceable parts. Always consult authorized service personnel for repairs.
When moving, consult authorized service personnel for disconnection and installation of the unit.
Do not become excessively chilled by staying for lengthy periods in the direct cooling airflow.
Do not insert fingers or objects into the outlet port or intake grilles.
Do not start and stop air conditioner operation by disconnecting the power supply cord.
Take care not to damage the power supply cord.
In the event of a malfunction (burning smell, etc.), immediately stop operation, disconnect the power supply plug, and consult authorized service personnel.

CAUTION!

Provide occasional ventilation during use.
Do not direct air flow at fireplaces or heating apparatus.
Do not climb on, or place objects on, the air conditioner.
Do not hang objects from the indoor unit.
Do not set flower vases or water containers on top of air conditioners.
Do not expose the air conditioner directly to water.
Do not operate the air conditioner with wet hands.
Do not pull power supply cord.
Turn off power source when not using the unit for extended periods.
Check the condition of the installation stand for damage.
Do not place animals or plants in the direct path of the air flow.
Do not drink the water drained from the air conditioner.
Do not use in applications involving the storage of foods, plants or animals, precision equipment, or art works.
Connection valves become hot during Heating; handle with care.
Do not apply any heavy pressure to radiator fins.
Operate only with air filters installed.
Do not block or cover the intake grille and outlet port.
Ensure that any electronic equipment is at least one metre away from either the indoor or outdoor units.
Avoid installing the air conditioner near a fireplace or other heating apparatus.
When installing the indoor and outdoor unit, take precautions to prevent access to infants.
Do not use inflammable gases near the air conditioner.
This appliance 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 use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

Features and Functions

INVERTER: Provides quick temperature adjustment with a low power setting for economic operation.
COIL DRY OPERATION: Dries the indoor unit to prevent mold and bacteria.
AUTO CHANGEOVER: Automatically switches between cooling, dry, and heating modes to maintain the set temperature.
PROGRAM TIMER: Allows integration of ON and OFF timer operations in a single sequence.
SLEEP TIMER: Gradually adjusts thermostat settings during sleep for comfort and energy saving, automatically turning off the unit at the set time.
WIRELESS REMOTE CONTROLLER: Enables convenient control of the air conditioner.
OMNI-DIRECTIONAL AIR FLOW (SWING OPERATION): Provides three-dimensional control of air direction with dual UP/DOWN and LEFT/RIGHT swing.
REMOVABLE OPEN PANEL: Allows for easy cleaning and maintenance of the indoor unit.
MILDEW-RESISTANT FILTER: Treated to resist mildew growth for cleaner use.
SUPER QUIET OPERATION: Reduces airflow for quieter operation.
POLYPHENOL CATECHIN AIR CLEANING FILTER: Uses static electricity to clean the air of fine particles and dust, with catechin to suppress bacteria growth.
NEGATIVE AIR IONS DEODORIZING FILTER: Produces negative air ions to deodorize and absorb odors.

WIRED REMOTE CONTROLLER (OPTION): An optional wired remote controller (model No. : UTB-YUD) is available, offering additional functions like a weekly timer and temperature set-back timer. It cannot be used simultaneously with the wireless remote controller.

Name of Parts

Diagrams illustrate the indoor unit, outdoor unit, and remote controller, identifying key components such as the operating control panel, indicators, intake grille, air filters, louvers, drain hose, intake port, outlet port, and remote controller buttons.

Preparation

Load Batteries: Insert AAA R03/LR03 batteries into the remote controller, ensuring correct polarity. Close the battery compartment lid.

Set the Current Time: Press the CLOCK ADJUST button, then use the TIMER SET buttons ( / ) to adjust the time. Press CLOCK ADJUST again to complete the setting.

To Use the Remote Controller: Point the controller at the signal receiver. The operating range is about 7 meters. A beep confirms signal reception.

Remote Controller Holder: Instructions are provided for mounting the holder and inserting/removing the remote controller.

Operation

To Select Mode Operation: Press START/STOP to begin operation. Press MASTER CONTROL to cycle through AUTO, COOL, DRY, HEAT, and FAN modes.

To Set the Thermostat: Use the SET TEMP. buttons ( / ) to adjust the desired temperature. The setting range varies by mode (18-30°C for AUTO/Cooling/Dry, 16-30°C for Heating).

To Set the Fan Speed: Press the FAN CONTROL button to cycle through AUTO, HIGH, MED, LOW, and QUIET speeds. Fan speed behavior varies by mode.

SUPER QUIET Operation: Select QUIET for reduced airflow and quieter operation. Note that this mode is not available during Dry mode and may reduce heating/cooling performance.

To Stop Operation: Press the START/STOP button.

About AUTO CHANGEOVER Operation: The unit automatically selects the operating mode based on room conditions. It may take time to reach the set temperature.

About Mode Operation: Detailed descriptions are provided for Heating, Cooling, Dry, and Fan modes, including specific operational characteristics and temperature considerations.

Timer Operation

To Use the ON timer or OFF timer: Press START/STOP, then TIMER MODE to select CANCEL, OFF, ON, or PROGRAM. Use TIMER SET buttons to adjust the time. The TIMER Indicator Lamp will light.

To Use the Program timer: Set ON and OFF times using the TIMER MODE button. The unit can sequence OFF → ON or ON → OFF operations within a 24-hour period.

To Cancel the Timer: Use the TIMER MODE button to select CANCEL.

To Change Timer Settings: Follow the steps for setting the timer and select the desired mode.

To Stop Air Conditioner Operation while the Timer is Operating: Press the START/STOP button.

To Change Operating Conditions: After setting the timer, press the appropriate buttons to change mode, fan speed, etc.

Sleep Timer Operation

The SLEEP timer automatically adjusts the thermostat setting to prevent excessive warming or cooling during sleep. The unit stops automatically when the set time has elapsed.

To Use the SLEEP Timer: Press the SLEEP button. The OPERATION Indicator Lamp and TIMER Indicator Lamp will light.

To Cancel the Timer: Use the TIMER MODE button to select CANCEL.

To Change the Timer Settings: Press the SLEEP button again and use the TIMER SET buttons.

To Stop the Air Conditioner During Timer Operation: Press the START/STOP button.

Manual Auto Operation

Use the MANUAL AUTO button on the main unit control panel when the remote controller is lost or unavailable. Operation will be under the AUTO mode with a standard fan speed and thermostat setting (24°C).

Adjusting the Direction of Air Circulation

Vertical Air Direction Adjustment: Use the SET button (Vertical) to adjust the up/down airflow direction. The direction is set automatically based on the selected mode (horizontal for Cooling/Dry, downward for Heating).

Horizontal Air Direction Adjustment: Use the SET button (Horizontal) to adjust the left/right airflow direction.

Note: Never insert fingers or foreign objects into the outlet ports. Always use the remote controller's SET button for adjustments.

Swing Operation

To select SWING Operation: Press the SWING button. The SWING Display will light. Cycle through Up/down swing, Left/right swing, and Up/down/left/right swing operations.

To stop SWING Operation: Press the SWING button and select STOP.

About Swing Operation: Descriptions detail how the louvers move for different swing types and airflow directions.

Coil Dry Operation

To select COIL DRY Operation: Press the COIL DRY button. The COIL DRY Display will light. The operation runs for 20 minutes and stops automatically.

To cancel COIL DRY Operation: Press the START/STOP button.

About COIL DRY Operation: This function helps prevent mold and bacteria but does not sterilize.

Cleaning and Care

CAUTION! Always turn off and disconnect the power supply before cleaning. Ensure the intake grille is securely installed.

Cleaning the Intake Grille: Remove the grille, clean with water, and replace.

Cleaning the Air Filter: Open the intake grille, remove the air filter, clean with a vacuum cleaner or by washing, and allow to dry thoroughly. Clean every two weeks.

Air Cleaning Filter Installation: Instructions for installing standard and air cleaning filters are provided.

Replacing dirty Air cleaning filters: Specific filter models (POLYPHENOL CATECHIN AIR CLEANING FILTER: UTR-FA13-1, Negative air ions deodorizing filter: UTR-FA13-2) are mentioned for replacement.

Maintenance of Deodorizing Filters: Clean deodorizing filters every three months by flushing with high-pressure hot water and drying.

Troubleshooting

The manual provides a table of symptoms and potential problems, along with checks to perform before requesting service. Common issues include:

Normal Function: Unit not operating immediately (compressor protection), noise from water flow or expansion/contraction, smells, mist/steam emission, weak airflow during heating or monitor operation, water from outdoor unit during heating.
Check Once More: Unit not operating at all (power supply, fuse, timer), poor cooling performance (dirty filter, blocked ports, incorrect thermostat setting, open windows, sunlight, heat sources, people), unit operating differently from remote controller (SUPER QUIET setting, dead batteries).

If problems persist, stop operation, disconnect power, and consult authorized service personnel.

Operating Tips

Operation and Performance: The air conditioner uses a heat-pump principle. Heating performance may be reduced in cold weather. Heat-pump units recirculate air, so the room takes time to heat up.

Microcomputer-controlled Automatic Defrosting: During low temperatures and high humidity, frost may form on the outdoor unit. The unit will temporarily stop and defrost automatically. The OPERATION Indicator Lamp will flash during this process.

AUTO Restart: In case of power interruption, the air conditioner will restart automatically in its previous mode when power is restored. If a power failure occurs during timer operation, the timer may reset.

Temperature and Humidity Range: Recommended operating ranges for Cooling, Dry, and Heating modes are provided. Using the unit outside these ranges may cause damage or reduced performance.

Specifications

Detailed specifications are provided for the indoor and outdoor units, including model numbers, type, power requirements, cooling and heating capacity, power input, current, energy efficiency ratio, airflow, maximum pressure, refrigerant type, dimensions, and weight.

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