Installation Guide
Tools Needed:
- Vacuum pump with gauge manifold
- Refrigerant charging scale
- Tubing cutter and flaring tool
- Torque wrench
- Multimeter
- Level
- Drill with hole saw
Step-by-Step Installation
- Select Installation Location: Choose a location with proper clearance (minimum 30cm from ceiling, 15cm from walls) on a solid wall that can support the unit's weight.
- Install Mounting Plate: Secure the mounting plate to the wall using appropriate anchors, ensuring it is perfectly level.
- Create Wall Opening: Drill a 65mm hole through the wall for refrigerant piping, drainage, and electrical connections.
- Connect Refrigerant Pipes: Connect indoor and outdoor units with flare connections, ensuring proper insulation on pipes.
- Electrical Connection: Connect power supply to dedicated circuit with proper grounding according to local electrical codes.
- Vacuum and Charge: Evacuate the system using a vacuum pump for at least 15 minutes, then charge with specified amount of R32 refrigerant.
- Test Operation: Test all functions including cooling, heating, fan speeds, and remote control operation.
Specifications
| Model Series | ASU24RLF / AOU24RLF |
| Type | Wall Mounted Split System |
| Color | White / Silver |
| Cooling Capacity | 7.1 kW (24,000 BTU/h) |
| Heating Capacity | 8.0 kW (27,300 BTU/h) |
| Noise Level (Indoor) | 19 dB - 42 dB |
| Control Type | Wireless Remote with LCD Display |
| Energy Rating | A+++ (Cooling) / A++ (Heating) |
| Power Requirements | 220-240V, 50Hz, Single Phase |
| Refrigerant | R32 (Eco-friendly) |
| Dimensions Indoor (HxWxD) | 29.5 x 79.8 x 22.5 cm |
| Dimensions Outdoor (HxWxD) | 55.0 x 79.0 x 28.5 cm |
| Weight Indoor/Outdoor | 9.5 kg / 34.0 kg |
Warranty Information
- Full Warranty: 5 years parts and labor
- Compressor Warranty: 7 years on DC Inverter Compressor
- Extended Coverage: Optional 10-year warranty available
For warranty service, contact Fujitsu Customer Service at 1-800-224-4878 or visit Fujitsu-General.com
Key Features
DC Inverter Technology
Advanced DC inverter compressor adjusts power output to match cooling/heating demand, providing precise temperature control while reducing energy consumption by up to 30%.
3D Airflow System
Vertical and horizontal louvers operate independently to distribute air evenly throughout the room, eliminating hot/cold spots and ensuring consistent comfort.
Eco-friendly R32 Refrigerant
Uses R32 refrigerant with lower global warming potential (GWP) compared to traditional refrigerants, reducing environmental impact by approximately 75%.
Self-Cleaning Function
Automatically cleans the indoor unit's heat exchanger after operation, preventing mold and bacteria growth while maintaining optimal performance and air quality.
Wi-Fi Connectivity
Compatible with Fujitsu App for remote control via smartphone, allowing scheduling, monitoring energy usage, and receiving maintenance alerts from anywhere.
Quiet Operation
Specialized fan design and vibration-dampening technology enable ultra-quiet operation as low as 19 dB, quieter than a whisper for undisturbed comfort.
Operating Modes Explained
Cool Mode
Standard cooling operation with adjustable temperature from 16°C to 30°C and multiple fan speeds
Heat Mode
Efficient heating operation with automatic defrost cycle for winter comfort down to -15°C outdoor temperature
Dry Mode
Dehumidification function that removes excess moisture while maintaining comfortable room temperature
Fan Mode
Air circulation without cooling or heating, with adjustable fan speeds and airflow direction
Auto Mode
Intelligent mode that automatically selects cooling or heating based on room temperature
Night Mode
Quiet operation with gradual temperature adjustment for comfortable sleep throughout the night
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit won't start | Power outage, circuit breaker tripped, remote control batteries dead | Check power supply, reset circuit breaker, replace remote batteries |
| Poor cooling/heating | Dirty filters, blocked airflow, incorrect temperature setting | Clean filters, remove obstructions, set appropriate temperature |
| Water dripping indoors | Clogged drain pipe, improper installation slope | Clean drain pipe, ensure proper drainage slope |
| Unusual noises | Loose parts, debris in fan, vibration | Tighten mounting screws, clear debris, check installation |
| Remote not working | Dead batteries, signal obstruction, distance too far | Replace batteries, ensure line of sight, stay within 7 meters |
| Frozen indoor unit | Dirty filters, low refrigerant, fan malfunction | Clean filters, call for service, check fan operation |
Error Codes
- E0: Protection circuit activated - Wait 3 minutes and restart
- E1: Indoor PCB error - Power off and contact service
- E2: Communication error - Check wiring between units
- E3: Outdoor temperature sensor error - Contact service
- E4: Indoor temperature sensor error - Contact service
- E5: Overload protection - Reduce load, check ventilation
- E6: Compressor error - Power off and contact service
- E7: Fan motor error - Check for obstructions, contact service
Manual Downloads
Current Model Manuals
ASU24RLF
24,000 BTU Wall Mounted
ASU18RLF
18,000 BTU Wall Mounted
ASU12RLF
12,000 BTU Wall Mounted
ASU09RLF
9,000 BTU Wall Mounted
Popular Previous Models
ASU24RLA
24,000 BTU Standard Model
ASU18RLA
18,000 BTU Standard Model
ASU12RLA
12,000 BTU Standard Model
ASU09RLA
9,000 BTU Standard Model