Installation Guide
Tools Needed:
- Refrigeration manifold gauge set
- Vacuum pump
- Torque wrench
- Flaring tool
- Tube cutter
- Multimeter
- Level
Step-by-Step Installation
- Site Preparation: Select installation location with proper clearances (minimum 30cm from walls, 50cm from ceilings). Ensure solid mounting surface.
- Outdoor Unit Placement: Install outdoor unit on vibration-absorbing pads. Ensure proper drainage and protection from direct sunlight.
- Indoor Unit Installation: Mount indoor units according to specified heights (typically 2.2-2.5m from floor). Ensure level installation.
- Refrigerant Piping: Connect refrigerant lines using flare connections. Apply nitrogen while brazing to prevent oxidation.
- Electrical Connections: Connect power supply (208-230V, 60Hz) following local electrical codes. Install dedicated circuit breaker.
- Communication Wiring: Connect communication cables between indoor and outdoor units using shielded twisted pair cables.
- Vacuum and Charge: Evacuate system to 500 microns minimum. Charge with specified amount of R410A refrigerant.
- System Test: Perform complete system test including cooling, heating, and all operational modes.
Specifications
| Model Series | MXZ-SM Series |
| System Type | Multi-Zone Inverter Heat Pump |
| Cooling Capacity | 48,000 BTU/h |
| Heating Capacity | 54,000 BTU/h |
| SEER Rating | 26.1 (Highest Efficiency) |
| HSPF Rating | 13.5 |
| Refrigerant Type | R410A |
| Power Requirements | 208-230V, 60Hz, 1 Phase |
| Max Current | 30A |
| Indoor Unit Options | 2-8 Zones (Various capacities) |
| Operating Temperature | -13°F to 122°F |
| Noise Level (Outdoor) | 56 dB(A) |
| Dimensions (Outdoor Unit) | 43 x 35 x 26 inches |
| Weight (Outdoor Unit) | 286 lbs |
Warranty Information
- Compressor Warranty: 7 years parts
- Parts Warranty: 5 years parts
- Labor Warranty: 1 year labor
- Extended Coverage: Optional extended 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 match exact cooling/heating demand, providing precise temperature control and significant energy savings.
Multi-Zone Control
Independent temperature control for up to 8 zones allows customized comfort in different rooms while optimizing energy efficiency.
Hyper-Heating INVERTER®
Provides 100% heating capacity at 5°F and continues to operate efficiently at temperatures as low as -13°F.
3D i-See Sensor™
Infrared sensors detect human presence and movement to direct airflow where needed and save energy in unoccupied spaces.
kumo cloud® Integration
Cloud-based control system allows remote monitoring and control via smartphone app, with energy usage tracking and maintenance alerts.
Quiet Operation
Advanced sound-dampening technology and vibration isolation provide whisper-quiet operation as low as 19 dB for indoor units.
Operating Modes
Cooling Mode
Efficient cooling with dehumidification, maintaining precise temperature control
Heating Mode
High-efficiency heat pump operation even in extreme cold conditions
Dry Mode
Dehumidification without significant cooling, ideal for humid conditions
Fan Mode
Air circulation without heating or cooling, with multiple fan speeds
Auto Mode
Automatic switching between cooling and heating based on room temperature
Eco Mode
Energy-saving operation with optimized performance for reduced power consumption
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| System won't start | Power loss, circuit breaker tripped, remote control issue | Check power supply, reset breaker, replace remote batteries |
| Poor cooling/heating | Dirty filters, low refrigerant, blocked airflow | Clean filters, check refrigerant charge, clear obstructions |
| Water leakage | Clogged drain line, improper installation | Clear drain line, ensure proper slope and insulation |
| Unusual noises | Loose parts, debris in fan, vibration | Tighten mounting hardware, clean fan blades, check isolation |
| Ice formation | Low airflow, low refrigerant, dirty coils | Check filters, verify refrigerant charge, clean coils |
| Error code display | System fault detected | Refer to error code chart, contact service if needed |
Common Error Codes
- P1/P2: Power supply issue - Check voltage and connections
- E1/E2: Communication error - Check wiring between units
- H1/H2: High pressure fault - Check condenser, clean coils
- L1/L2: Low pressure fault - Check refrigerant charge
- F1/F2: Indoor unit sensor fault - Replace temperature sensor
- U1/U2: Inverter fault - Contact service technician
- J1/J2: Drain pump fault - Check drain system
Manual Downloads
Current Model Manuals
MXZ-SM48NAM
48K BTU Multi-Zone System
MXZ-SM60NAM
60K BTU Multi-Zone System
MXZ-SM36NAM
36K BTU Multi-Zone System
MXZ-SM42NAM
42K BTU Multi-Zone System
Popular Previous Models
MXZ-4C36NA
36K BTU 4-Zone System
MXZ-8C48NA
48K BTU 8-Zone System
PUZ-HA36NKA
36K BTU Outdoor Unit
MSZ-FH Series
Wall-mounted Indoor Units