Fujitsu ASU12RLS Manual

The Fujitsu ASU12RLS is a high-efficiency wall-mounted split-type air conditioner with 12000 BTU cooling capacity, featuring inverter technology for energy savings, multiple operation modes, advanced filtration system, wireless remote control, timer functions, sleep mode, and eco-friendly R32 refrigerant. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Indoor unit with LCD display, Outdoor unit with inverter compressor, Wireless remote control, Air filtration system, Temperature and humidity sensors.

Feature	Description
Cooling Capacity	12000 BTU/h
Heating Capacity	13000 BTU/h
Inverter Technology	Energy efficient variable speed operation
Operation Modes	Cool, Heat, Dry, Fan, Auto
Remote Control	Wireless with LCD display
Timer Functions	24-hour on/off timer
Sleep Mode	Automatic temperature adjustment
Air Flow	4-speed fan with auto swing
Filter System	Washable anti-bacterial filter
Refrigerant	R32 eco-friendly

Installation

Unpack and inspect contents. Ensure proper location for indoor and outdoor units.

1. Install outdoor unit: Select stable, well-ventilated location away from direct sunlight.
2. Install indoor unit: Mount on wall at least 2.2m from floor, away from heat sources.
3. Connect refrigerant pipes: Use proper tools for flare connections; ensure no leaks.
4. Electrical connection: Connect to dedicated circuit with proper grounding.
5. Vacuum and charge: Evacuate system and charge with R32 refrigerant.

WARNING! Installation must be performed by qualified technician only. Incorrect installation may cause injury or equipment damage.

First-Time Setup

After installation, perform initial setup and testing.

1. Power on: Turn on circuit breaker and press power button on remote.
2. Test operation: Run in cooling mode for 15 minutes to verify performance.
3. Set preferences: Configure temperature units (C/F), beeper sound, filter reminder.
4. Remote pairing: Ensure remote is properly synchronized with indoor unit.
5. Function test: Verify all operation modes work correctly.

CAUTION! Allow system to stabilize for 10 minutes after power on before changing settings.

Specifications

• Model: ASU12RLS
• Cooling Capacity: 12000 BTU/h (3.5kW)
• Heating Capacity: 13000 BTU/h (3.8kW)
• Power Supply: 220-240V, 50Hz
• Refrigerant: R32
• Noise Level: 21-38 dB (Indoor), 50 dB (Outdoor)
• Air Flow: High: 10.5 m³/min, Low: 6.0 m³/min
• Dimensions Indoor: 798×285×223 mm
• Dimensions Outdoor: 700×535×240 mm
• Weight Indoor: 8.5 kg, Outdoor: 28 kg

Controls and Settings

Access functions via remote control or indoor unit buttons. Indoor Unit: OPERATION button, TEMPERATURE buttons, LED indicators.

Remote: POWER, MODE, TEMPERATURE, FAN SPEED, TIMER, SWING, SLEEP, TURBO, FILTER, CLOCK.

Temperature Setting: 16°C - 30°C. Fan Speed: Auto, Low, Medium, High, Turbo. Timer: 24-hour programmable. Swing: Vertical and horizontal air direction control. Sleep: Automatic temperature adjustment for comfortable sleep.

Operation Modes

Multiple operation modes for different needs and seasons.

1. Cool Mode: For summer cooling; set desired temperature.
2. Heat Mode: For winter heating; automatic defrost cycle.
3. Dry Mode: Reduces humidity without significant cooling.
4. Fan Mode: Circulates air without cooling/heating.
5. Auto Mode: Automatically selects cooling or heating based on room temperature.
6. Turbo Mode: Maximum cooling/heating for quick temperature adjustment.

Tip: Use Auto mode for energy efficiency and comfortable environment.

Maintenance

Regular maintenance ensures optimal performance and longevity.

1. Air Filter: Clean every 2 weeks during operation; wash with water and dry completely.
2. Outdoor Unit: Keep clear of debris and vegetation for proper airflow.
3. Indoor Unit: Wipe surface with soft dry cloth; do not use chemicals.
4. Drain Pipe: Ensure clear for proper condensate drainage.
5. Professional Service: Annual inspection recommended by qualified technician.

WARNING! Always disconnect power before performing any maintenance.

Error Codes

Understanding error codes for quick troubleshooting.

Error Code	Description	Action
E0	EEPROM error	Contact service technician
E1	Room temperature sensor error	Check sensor connection
E2	Heat exchanger temperature sensor error	Check sensor connection
E3	Communication error	Check wiring between units
E4	Outdoor unit protection	Wait 3 minutes and restart
E5	Overload protection	Reduce load, check voltage
E6	Freeze protection	Check airflow and filters

Care & Cleaning

Proper care extends equipment life and maintains efficiency.

1. Unplug unit before cleaning.
2. Clean air filter regularly with mild detergent and water.
3. Wipe indoor unit with soft, dry cloth.
4. Keep outdoor unit clear of leaves and debris.
5. Do not use abrasive cleaners or chemicals.

CAUTION! Never use water to clean electrical components or outdoor unit.

Regulatory Information

CE certified; complies with European safety and EMC standards. Energy Efficiency Class: A++. Manufactured under ISO 9001 quality standards. Refrigerant R32 has low GWP (Global Warming Potential). For technical support, visit www.fujitsu-general.com or contact authorized service centers. Disposal must comply with WEEE regulations.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit not starting	Power supply/remote	Check circuit breaker; replace remote batteries; ensure proper distance.
Poor cooling/heating	Filters/temperature setting	Clean air filters; check temperature setting; ensure doors/windows closed.
Water leakage	Drain pipe blockage	Check drain pipe for obstruction; ensure proper installation angle.
Unusual noise	Loose parts/fan	Check for loose panels; ensure fan blades not hitting housing.
Remote not working	Batteries/obstacles	Replace batteries; remove obstacles; point directly at indoor unit.
Ice formation	Low airflow/low temperature	Clean filters; check fan speed; avoid setting below 16°C.

Reset: Turn off at circuit breaker for 10 minutes, then restart.

Service: Contact authorized Fujitsu service center; www.fujitsu-general.com