Installation Guide
Tools Needed:
- Drill with hole saw attachment
- Level
- Screwdrivers (flat and Phillips)
- Torque wrench
- Vacuum pump and manifold gauge
- Flaring tool
Step-by-Step Installation
- Choose Installation Location: Select a location on a solid wall with proper clearance from obstacles and adequate drainage.
- Mount Wall Bracket: Securely mount the wall bracket using appropriate anchors for your wall type, ensuring it is perfectly level.
- Create Wall Opening: Drill a hole through the wall for refrigerant piping, drain hose, and electrical connections.
- Connect Refrigerant Pipes: Connect indoor and outdoor units with flare connections, ensuring proper insulation on pipes.
- Electrical Connection: Connect to a dedicated circuit with proper voltage (208-230V) and install disconnect box as required by local codes.
- Drainage Setup: Install drain hose with proper downward slope to ensure complete water drainage.
- Vacuum and Charge: Evacuate air and moisture from refrigerant lines, then charge with specified refrigerant type and amount.
- Test Operation: Test all functions including cooling, heating, fan speeds, and remote control operation.
Specifications
| Model Series | MSZ-AP Series |
| Type | Wall Mounted Split System |
| Color | White / Titanium |
| Cooling Capacity | 9,000 - 36,000 BTU/h |
| Heating Capacity | 10,000 - 38,000 BTU/h |
| Noise Level (Indoor) | 19 - 42 dB |
| Control Type | Wireless Remote with LCD Display |
| Energy Rating | SEER 26 / HSPF 11 |
| Refrigerant Type | R-410A |
| Power Requirements | 208-230V, 60Hz, 1 Phase |
| Dimensions (HxWxD) | 29.5 x 35.4 x 8.7 inches |
| Weight (Indoor Unit) | 22 - 35 lbs |
| Air Flow (Max) | 1,060 CFM |
Warranty Information
- Full Warranty: 5 years parts and labor
- Compressor Warranty: 7 years on inverter compressor
- Extended Coverage: Optional 12-year warranty available
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 units.
3D i-See Sensor
Infrared sensors detect human presence and movement, automatically directing airflow away from occupants for enhanced comfort while optimizing energy efficiency.
Multi-Stage Filtration
Combination of washable pre-filter, anti-allergy enzyme filter, and plasma filtration removes dust, pollen, odors, and airborne contaminants.
Hyper-Heating INVERTER
Provides 100% heating capacity at 5°F outdoor temperature, maintaining efficient operation in extreme cold conditions where conventional heat pumps fail.
kumo cloud® Connectivity
Wi-Fi enabled for remote control via smartphone app, allowing scheduling, energy monitoring, and control from anywhere with internet access.
Quiet Operation
Sound levels as low as 19 dB in quiet mode - quieter than a whisper - for undisturbed sleep and peaceful indoor environments.
Advanced Operation Modes
Auto Changeover
Automatically switches between heating and cooling based on room temperature
Econo Cool
Energy-saving mode that optimizes operation for reduced power consumption
Powerful Mode
Maximum capacity operation for rapid cooling or heating when needed
I-Feel Control
Remote control acts as thermostat for precise temperature at user location
Sleep Mode
Gradually adjusts temperature and reduces fan speed for comfortable sleep
Follow Me
Directs airflow toward remote control location for personalized comfort
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit won't start | Power issue, remote control batteries, circuit breaker | Check power supply, replace remote batteries, reset circuit breaker |
| Poor cooling/heating | Dirty filters, low refrigerant, blocked airflow | Clean filters, check for refrigerant leak, clear obstructions |
| Water dripping indoors | Clogged drain line, improper installation slope | Clear drain line, ensure proper downward slope of drain hose |
| Unusual noises | Loose parts, debris in fan, vibration | Tighten mounting, clear debris, check for proper isolation |
| Remote not working | Dead batteries, signal obstruction, sensor issue | Replace batteries, ensure line of sight, check sensor window |
| Error code displayed | System malfunction, sensor failure | Refer to error code chart, contact service if persistent |
Common Error Codes
- P1/P2: Power supply issue - Check voltage and wiring
- E6: Communication error - Check wiring between indoor/outdoor units
- H3/H4: High pressure protection - Check for restricted airflow
- F3: Discharge pipe temperature sensor - Contact service
- U4: Indoor/outdoor communication - Check connections
- J1/J2: Room temperature sensor - Check sensor connection
Manual Downloads
Current Model Series
MSZ-AP09NA
9,000 BTU Wall Mounted
MSZ-AP12NA
12,000 BTU Wall Mounted
MSZ-AP18NA
18,000 BTU Wall Mounted
MSZ-AP24NA
24,000 BTU Wall Mounted
Popular Previous Models
MSZ-FH09NA
9,000 BTU Standard Series
MSZ-GE15NA
15,000 BTU General Series
MSZ-LN09NA
9,000 BTU Premium Series
MSZ-MU09NA
9,000 BTU Ultra Series