Installation Guide
Tools Needed:
- Vacuum pump with gauge manifold
- Flaring tool set
- Tubing cutter
- Torque wrench
- Level
- Drill with hole saw
- Refrigerant scale
Step-by-Step Installation
- Select Installation Location: Choose a location with proper clearance (minimum 6 inches from ceiling, 12 inches from walls) on a solid wall.
- Mount Indoor Unit Bracket: Secure the mounting bracket to the wall using appropriate anchors for wall type.
- Create Wall Penetration: Drill a 3-inch hole through the wall with slight downward slope to outdoor side for drainage.
- Connect Refrigerant Lines: Connect copper tubing between indoor and outdoor units using flare connections. Ensure proper insulation on suction line.
- Connect Drain Line: Install drain hose with proper downward slope (minimum 1/4 inch per foot) to ensure proper condensation drainage.
- Electrical Connection: Connect to dedicated circuit as specified in specifications. Follow local electrical codes.
- Vacuum and Charge System: Evacuate system to 500 microns minimum, then charge with specified refrigerant amount.
- Test Operation: Test cooling and heating modes, check for proper drainage, and verify remote control operation.
Specifications
| Model Series | MSZ-FS Series |
| Type | Wall Mounted Mini Split |
| Color | White / Titanium |
| Cooling Capacity | 9,000 - 24,000 BTU/h |
| Heating Capacity | 10,000 - 27,000 BTU/h |
| Noise Level (Indoor) | 19 - 42 dB |
| Control Type | Remote Control with LCD Display |
| Energy Rating | SEER 30.5 / HSPF 13.5 |
| Refrigerant Type | R-410A |
| Power Requirements | 208-230V, 60Hz, 1 Phase |
| Indoor Unit Dimensions | 32.3 x 11.4 x 8.7 inches |
| Operating Temperature | -13°F to 122°F (Cooling) / -13°F to 75°F (Heating) |
| Airflow (Max) | 882 CFM |
Warranty Information
- Full Warranty: 5 years parts and labor
- Compressor Warranty: 7 years on inverter compressor
- Extended Warranty: Optional 12-year warranty available with registration
For warranty service, contact Mitsubishi Electric at 1-800-433-4822 or visit MitsubishiComfort.com
Key Features
Inverter Technology
Advanced DC inverter compressor adjusts speed to maintain precise temperature control, reducing energy consumption by up to 40% compared to conventional systems.
Hyper-Heating INVERTER®
Provides 100% heating capacity at 5°F and continues to operate at -13°F, ensuring reliable heating performance in extreme winter conditions.
3D i-See Sensor™
Infrared sensor detects temperature variations throughout the room and automatically adjusts airflow direction for optimal comfort distribution.
Quiet Operation
Sound levels as low as 19 dB in quiet mode - quieter than a whisper. Special vibration-dampening technology minimizes operational noise.
Wi-Fi Connectivity
Compatible with Kumo Cloud® for remote control via smartphone app, allowing scheduling, monitoring, and control from anywhere.
Multi-Stage Filtration
Includes washable anti-allergy enzyme filter, deodorizing filter, and catechin filter to remove allergens, odors, and bacteria from indoor air.
Operation Modes Explained
Auto Mode
Automatically selects cooling or heating based on room temperature for optimal comfort
Dry Mode
Dehumidifies room while maintaining temperature, ideal for humid conditions
Quiet Mode
Reduces fan speed and compressor noise for nighttime or quiet environment operation
Powerful Mode
Maximum cooling/heating capacity for rapid temperature adjustment
Eco Mode
Optimizes energy consumption while maintaining comfort levels
I-Feel Mode
Uses remote control as temperature sensor for personalized comfort
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit won't turn 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 mounting hardware, clear debris, check installation |
| Remote not working | Dead batteries, signal obstruction, remote sensor issue | Replace batteries, ensure line of sight, check sensor window |
| Unit turns on/off frequently | Dirty filters, thermostat placement, incorrect sizing | Clean filters, relocate remote, verify unit capacity matches room size |
Error Codes
- P1/P2: Power supply issue - Check voltage and connections
- E6/E7: Communication error - Check wiring between indoor/outdoor units
- H1/H2: Defrost cycle - Normal operation in heating mode
- F3: Drain pump error - Check drain pump and float switch
- U4: Indoor/outdoor communication failure - Check connection cables
- L5: Inverter compressor error - Contact service technician
Manual Downloads
Current Model Manuals
MSZ-FS06NA
6,000 BTU Wall Mounted
MSZ-FS09NA
9,000 BTU Wall Mounted
MSZ-FS12NA
12,000 BTU Wall Mounted
MSZ-FS18NA
18,000 BTU Wall Mounted
Popular Previous Models
MSZ-GE09NA
9,000 BTU Standard Series
MSZ-FH09NA
9,000 BTU Hyper-Heat
MSZ-AP09NA
9,000 BTU Advanced Series
MSZ-LN09NA
9,000 BTU Value Series