Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Drill with hole saw attachment
- Tape measure
- Vacuum pump
- Manifold gauge set
Step-by-Step Installation
- Choose Installation Location: Select a location with proper wall support, away from direct sunlight and heat sources, with adequate clearance for airflow.
- Install Mounting Plate: Secure the mounting plate to the wall using appropriate anchors and ensure it is perfectly level.
- Drill Hole for Piping: Drill a 3-inch hole through the wall for refrigerant lines, drain hose, and electrical wiring.
- Connect Refrigerant Lines: Connect the indoor and outdoor unit refrigerant lines, ensuring all connections are tight and properly sealed.
- Connect Drain Hose: Route the condensate drain hose to proper drainage location with a downward slope.
- Electrical Connection: Connect to a dedicated 220V, 50Hz circuit with proper grounding. Follow local electrical codes.
- Vacuum and Charge System: Evacuate air and moisture from refrigerant lines using a vacuum pump, then charge with specified refrigerant amount.
- Test Run: Run the air conditioner in cooling mode to check for proper operation, temperature drop, and any leaks.
Specifications
| Model Series | MSMA-12HRN1 |
| Type | Split System Air Conditioner |
| Color | White |
| Cooling Capacity | 12000 BTU/H |
| Heating Capacity | 13000 BTU/H |
| Noise Level (Indoor/Outdoor) | 24 dB / 52 dB |
| Control Type | Remote Control with LED Display |
| Energy Rating | A++ (Highly Efficient) |
| Power Consumption (Cooling) | 1080 W |
| Power Requirements | 220-240V, 50Hz, 15A |
| Refrigerant Type | R32 |
| Dimensions Indoor Unit (HxWxD) | 29 x 80 x 19 cm |
| Dimensions Outdoor Unit (HxWxD) | 55 x 80 x 29 cm |
| Weight (Indoor/Outdoor) | 9 kg / 32 kg |
| Operating Temperature Range | -15°C to 46°C |
Warranty Information
- Full Warranty: 2 years parts and labor
- Compressor Warranty: 5 years on rotary compressor
- Additional Coverage: Optional extended warranty available
For warranty service, contact Midea Customer Service at 1-800-288-8888 or visit Midea.com
Key Features
Inverter Technology
Advanced DC inverter compressor adjusts cooling/heating power based on room temperature, providing consistent comfort while reducing energy consumption by up to 40%.
Turbo Cooling/Heating
Rapid cooling and heating function that quickly reaches desired temperature, ideal for immediate comfort when entering a room.
Sleep Mode
Intelligent sleep mode automatically adjusts temperature and fan speed throughout the night for optimal sleeping conditions and energy savings.
Self-Cleaning Function
Automatically cleans the indoor unit's heat exchanger to prevent mold and bacteria growth, ensuring healthier air quality.
Wi-Fi Smart Control
Connect to home Wi-Fi for remote control via smartphone app, allowing temperature adjustments, scheduling, and energy monitoring from anywhere.
Eco Mode
Energy-saving mode that optimizes operation to minimize power consumption while maintaining comfortable temperature levels.
Operating Modes Explained
Cool Mode
Standard cooling operation with adjustable temperature and fan speed settings
Heat Mode
Reverse cycle heating for winter comfort with efficient heat pump technology
Dry Mode
Dehumidification function that removes excess moisture without overcooling the room
Fan Mode
Circulates air 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 minimal noise disturbance
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit won't turn on | Power issue, remote control batteries dead, circuit breaker tripped | Check power supply, replace remote batteries, reset circuit breaker |
| Poor cooling/heating | Dirty filters, blocked airflow, refrigerant leak, outdoor unit obstructed | Clean filters, clear obstructions, check for leaks, clear outdoor unit area |
| Water leaking indoors | Clogged drain pipe, improper installation slope, frozen evaporator | Clear drain pipe, ensure proper slope, check for ice buildup |
| Unusual noises | Loose parts, debris in fan, vibrating pipes | Tighten mounting, clear debris, secure refrigerant lines |
| Foul odors | Dirty filters, mold growth in drain pan | Clean or replace filters, clean drain pan and use anti-mold treatment |
| Remote control not working | Dead batteries, signal obstruction, remote sensor issue | Replace batteries, ensure line of sight, check indoor unit sensor |
Error Codes
- E1: Room temperature sensor failure - Check sensor connection
- E2: Evaporator temperature sensor failure - Check sensor connection
- E3: Condenser temperature sensor failure - Check sensor connection
- E4: Communication error between indoor/outdoor units - Check wiring
- E5: Overcurrent protection - Check electrical supply
- E6: Compressor overload - Allow unit to cool down
- E7: Low refrigerant pressure - Check for leaks
- E8: High refrigerant pressure - Check outdoor unit airflow
- E9: Drain pump failure - Check pump and float switch
Manual Downloads
Current Model Manuals
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MSMA-24HRN1
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