1. Introduction
This instruction manual provides detailed information for the safe and efficient operation, installation, and maintenance of your GREE 24,000 MULTI+ Ultra 23 SEER TRI Ductless Mini Split System. This advanced system is designed to provide optimal cooling and heating for multiple zones, ensuring comfort and energy efficiency.
Please read this manual thoroughly before operating the unit and keep it for future reference. Professional installation is highly recommended for this system.
2. Safety Information
Always adhere to the following safety precautions to prevent injury or damage to the unit:
- Ensure the unit is installed by a qualified HVAC professional.
- Do not attempt to repair or service the unit yourself. Contact qualified service personnel.
- Turn off the power supply to the unit before any cleaning or maintenance.
- Keep children and pets away from the outdoor unit.
- Do not block the air inlets or outlets of the indoor or outdoor units.
- Use only the specified refrigerant type.
- This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
3. Product Overview
The GREE MULTI+ Ultra system consists of one outdoor condenser unit and multiple indoor evaporator units, along with individual remote controls for each indoor unit.
Figure 3.1: Complete GREE MULTI+ Ultra Mini Split System showing the outdoor condenser unit, three indoor air handlers, and three remote controls. This setup allows for multi-zone climate control.
Indoor Unit and Remote Control
Each indoor unit is designed for quiet operation and comes with its own remote control for individual zone temperature management.
Figure 3.2: A single GREE indoor ductless mini split unit shown alongside its dedicated remote control. The indoor unit features a sleek, white design with a digital display.
Outdoor Condenser Unit
The outdoor unit houses the compressor and condenser coil, responsible for the system's cooling and heating capabilities.
Figure 3.3: The GREE outdoor condenser unit, a compact white rectangular unit with a protective grille covering the fan. This unit connects to multiple indoor units.
4. Setup and Installation
Installation of the GREE MULTI+ Ultra system requires specialized tools and knowledge. It is mandatory that this system be installed by a certified HVAC technician to ensure proper function, safety, and warranty validity.
Key Installation Considerations:
- Location: Proper placement of both indoor and outdoor units is crucial for optimal performance and airflow.
- Refrigerant Lines: Correct sizing and connection of refrigerant lines are essential.
- Electrical Wiring: All electrical connections must comply with local codes and regulations.
- Drainage: Ensure proper condensate drainage from indoor units to prevent water damage.
- Vacuuming: The system must be properly evacuated (vacuumed) before charging with refrigerant.
Refer to the detailed installation manual provided to your certified installer for specific instructions and diagrams.
5. Operating Instructions
Your GREE MULTI+ Ultra system offers various modes and settings for personalized comfort. Each indoor unit is controlled independently via its dedicated remote control.
Remote Control Functions:
- Power Button: Turns the unit ON/OFF.
- Mode Selection: Cycle through operating modes:
- Cool Mode: Provides cooling. Operating range: 0°F to 118°F.
- Heat Mode: Provides heating. Operating range: -31°F to 75°F.
- Fan Mode: Circulates air without heating or cooling.
- Dry Mode: Dehumidifies the room.
- Auto Mode: Automatically selects cooling or heating based on room temperature.
- Temperature Adjustment: Use UP/DOWN arrows to set desired temperature.
- Fan Speed: Adjust fan speed (Auto, Low, Medium, High).
- Swing Function: Controls the louver's vertical swing for even air distribution.
- Sleep Mode: Activates a programmable sleep mode for near-silent operation and energy saving during sleep hours.
- Timer Function: Set the unit to turn ON/OFF automatically at specified times.
Figure 5.1: The GREE MULTI+ Ultra system provides both cooling and heating capabilities, adapting to various ambient temperatures to maintain indoor comfort.
6. Maintenance
Regular maintenance ensures the longevity and efficiency of your GREE MULTI+ Ultra system. Always disconnect power before performing any maintenance.
User Maintenance:
- Air Filter Cleaning: Clean the air filters of indoor units every two weeks or more frequently depending on usage and air quality. Wash with lukewarm water and mild detergent, then dry completely before reinserting.
- Unit Surface Cleaning: Wipe the indoor and outdoor unit surfaces with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
Professional Maintenance:
It is recommended to have a qualified HVAC technician perform professional maintenance annually. This includes checking refrigerant levels, cleaning coils, inspecting electrical connections, and ensuring proper drainage.
7. Troubleshooting
Before contacting service, check the following common issues:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on. | No power supply; remote control batteries dead. | Check circuit breaker; replace remote control batteries. |
| Insufficient cooling/heating. | Dirty air filters; blocked outdoor unit; wrong mode selected; low refrigerant. | Clean filters; clear obstructions from outdoor unit; select correct mode; contact technician for refrigerant check. |
| Unusual noise. | Loose parts; fan obstruction. | Contact technician. |
| Water leakage from indoor unit. | Clogged drain pipe; improper installation. | Contact technician. |
If the problem persists after attempting these solutions, please contact a qualified service technician.
8. Specifications
Key technical specifications for the GREE 24,000 MULTI+ Ultra 23 SEER TRI Ductless Mini Split System:
- Model Number: MULTIU24CLIV300
- Cooling Capacity: 24,000 British Thermal Units (BTUs)
- Heating Capacity: Designed for efficient heating down to -31°F
- SEER Rating: Up to 23 SEER (Seasonal Energy Efficiency Ratio)
- Capacity: 2 Tons
- Manufacturer: Gree
- UPC: 841999106652
- Cooling Operating Range: 0°F to 118°F
- Heating Operating Range: -31°F to 75°F
Figure 8.1: EnergyGuide label indicating the cooling and heating efficiency ratings for a similar GREE heat pump split system, highlighting its energy performance.
9. Warranty and Support
Your GREE MULTI+ Ultra Mini Split System comes with a 5-Year Manufacturer's Warranty. This warranty covers defects in materials and workmanship under normal use and service.
For warranty claims, technical support, or to locate a certified service provider, please contact GREE customer service or visit the official GREE website. Ensure you have your model number (MULTIU24CLIV300) and proof of purchase available when contacting support.
For more information, visit the GREE Store on Amazon.
