Installation Guide
Tools Needed:
- Vacuum pump with gauge manifold
- Refrigerant charging scale
- Torque wrench
- Flaring tool set
- Pipe cutter and reamer
- Multimeter
- Level
- Drill with core bit
Step-by-Step Installation
- Select Installation Location: Choose a location with proper clearances (minimum 30cm from ceiling, 15cm from walls) and adequate structural support.
- Mount Indoor Unit Bracket: Securely mount the mounting plate to the wall using appropriate anchors for wall type.
- Prepare Refrigerant Piping: Cut copper pipes to required length, deburr ends, and flare connections to manufacturer specifications.
- Install Drainage System: Route drain hose with continuous downward slope (minimum 1/100 gradient) to proper drainage point.
- Electrical Connection: Connect to dedicated circuit with proper grounding according to local electrical codes. Use specified wire gauge.
- Connect Refrigerant Lines: Connect indoor and outdoor units with flare nuts, ensuring clean, oiled connections tightened to specified torque.
- Vacuum and Charge: Evacuate system to 500 microns, hold for 15 minutes, then charge with specified refrigerant amount by weight.
- Test Operation: Run system through all modes to verify proper cooling, heating, and drainage operation.
Specifications
| Model Series | ASU24RLF / AOU24RLF |
| Type | Wall Mounted Split System |
| Color | White / Silver |
| Cooling Capacity | 24,000 BTU/h (7.0 kW) |
| Heating Capacity | 26,000 BTU/h (7.6 kW) |
| Noise Level (Indoor) | 19 dB (Low) - 42 dB (High) |
| Control Type | Remote Control with LCD Display |
| Energy Rating (Cooling) | SEER 22 |
| Energy Rating (Heating) | HSPF 10 |
| Refrigerant Type | R-410A |
| Power Requirements | 208-230V, 60Hz, 1 Phase |
| Dimensions Indoor (HxWxD) | 29.5 x 86.5 x 21.5 cm |
| Dimensions Outdoor (HxWxD) | 55.0 x 79.0 x 28.5 cm |
| Weight Indoor/Outdoor | 9.5 kg / 42.0 kg |
| Air Flow (Max) | 1,060 m³/h |
Warranty Information
- Full Warranty: 5 years parts and labor
- Compressor Warranty: 7 years on rotary compressor
- Extended Coverage: Optional 10-year warranty available with registration
For warranty service, contact Fujitsu Customer Service at 1-888-888-3424 or visit FujitsuGeneral.com
Key Features
Inverter Technology
Advanced DC inverter compressor adjusts speed continuously for precise temperature control, faster cooling/heating, and up to 40% energy savings compared to conventional systems.
Plasma Quad Plus™
Four-stage air purification system that removes dust, pollen, odors, and inhibits bacteria and mold growth for cleaner, healthier indoor air quality.
3D Airflow
Vertical and horizontal louvers move independently to distribute air evenly throughout the room, eliminating hot/cold spots and ensuring consistent comfort.
Wi-Fi Control
Built-in Wi-Fi allows remote control via smartphone app, including scheduling, temperature adjustments, and energy monitoring from anywhere.
Eco Mode
Intelligent energy-saving operation that optimizes performance based on room conditions and usage patterns while maintaining comfort levels.
Self-Clean Function
Automatically dries the heat exchanger and internal components after use to prevent mold and mildew growth, reducing maintenance needs.
Operating Modes Explained
Cool Mode
Standard cooling operation with adjustable temperature and fan speed settings for hot weather conditions
Heat Mode
Efficient heating operation with automatic defrost cycle for cold weather down to -15°C outdoor temperature
Dry Mode
Dehumidification function that removes excess moisture while maintaining comfortable room temperature
Fan Mode
Air circulation only without cooling or heating, with multiple fan speed options
Auto Mode
Intelligent mode that automatically selects cooling or heating based on room temperature
Quiet Mode
Ultra-quiet operation with reduced fan speed for nighttime or office use
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit not turning on | 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, refrigerant leak, outdoor unit obstructed | Clean filters, clear obstructions, check for leaks, clear outdoor unit area |
| Water dripping indoors | Clogged drain line, improper installation slope, frozen evaporator | Clear drain line, ensure proper slope, check for ice buildup |
| Unusual noises | Loose parts, debris in fan, vibration from mounting | Tighten all fasteners, clear debris, check mounting stability |
| Foul odors | Dirty filters, mold growth in drain pan, stagnant water | Clean/replace filters, run self-clean cycle, ensure proper drainage |
| Remote not working | Batteries dead, signal blocked, sensor issue | Replace batteries, ensure line of sight, check sensor window |
Error Codes
- E0: Room temperature sensor error - Check indoor sensor connection
- E1: Indoor coil sensor error - Check evaporator sensor
- E3: High pressure protection - Check for blocked condenser or overcharge
- E4: Low pressure protection - Check for refrigerant leak or restriction
- E5: Compressor overload - Check power supply and compressor
- E6: Communication error - Check wiring between indoor/outdoor units
- E7: Outdoor fan motor error - Check fan motor and capacitor
- E8: Four-way valve error - Check reversing valve operation
- E9: Water overflow protection - Check drain system
Manual Downloads
Current Model Manuals
ASU24RLF
24,000 BTU Wall Mount
ASU18RLF
18,000 BTU Wall Mount
ASU30RLF
30,000 BTU Wall Mount
ASU36RLF
36,000 BTU Wall Mount
Popular Previous Models
ASU12RLS
12,000 BTU Wall Mount
ASU24RLS
24,000 BTU Heat Pump
ASU9RLS
9,000 BTU Slim Design
ASU48RLF
48,000 BTU High Capacity
Accessory Manuals
Wired Controller
ARC433A63 Remote
Wi-Fi Adapter
FJ-WIFI-01 Module
Installation Kit
Standard Wall Mount
Maintenance Guide
Cleaning & Service