1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your GREE Multi+ Ultra Series 42,000 BTU 5-Zone Universal Floor/Ceiling Ductless Mini-Split System. Please read this manual thoroughly before operating the unit and retain it for future reference. Proper installation and maintenance are crucial for optimal performance and longevity of the system.
The GREE Multi+ Ultra Series is designed to provide comfortable heating and cooling for multiple zones, featuring high efficiency and advanced control options.
2. Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Consult a qualified installer, service agency, or the manufacturer for information or assistance.
- Electrical Safety: Ensure the unit is properly grounded. Do not operate with wet hands. Disconnect power before servicing.
- Refrigerant Safety: This system contains refrigerant. Only qualified personnel should handle refrigerant.
- Installation: Installation must be performed by a licensed HVAC professional in accordance with all local and national electrical and safety codes.
- Operation: Do not insert objects into the air outlet or inlet. Keep children and pets away from the unit.
- Maintenance: Always turn off the power supply before cleaning or performing maintenance.
- Proposition 65 Warning: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
3. Product Overview
The GREE Multi+ Ultra Series is a multi-zone ductless mini-split system designed for efficient climate control across up to five separate areas. The system comprises an outdoor condenser unit and multiple indoor floor/ceiling units, each with its own remote control and built-in WiFi capabilities.
Figure 1: Complete GREE Multi+ Ultra Series 5-Zone Mini-Split System. This image displays the outdoor condenser unit, five indoor floor/ceiling units, and their corresponding remote controls, illustrating the full system configuration.
Key Features:
- High Efficiency: Up to 20 SEER2 for cooling and 10 HSPF2 for heating, ensuring energy-efficient operation.
- G10 Inverter Technology: Provides precise temperature control and enhanced performance.
- Wide Operating Range: Effective cooling up to 115°F and heating down to -31°F.
- Multi-Zone Comfort: Independently control up to five zones with varying capacities (e.g., 9K, 12K BTU).
- Smart Control: Each indoor unit includes built-in WiFi for control via a smart device, in addition to the provided remote control.
- Quiet Operation: Designed for low noise levels, with outdoor units as low as 58 dB.
- Corrosion Resistance: Acrylic resin coated coil for durability in various climates.
- Self-Diagnosis: Integrated self-diagnosis capabilities for easier troubleshooting.
4. Setup and Installation
IMPORTANT: Installation of this mini-split system must be performed by a certified HVAC technician. Attempting self-installation may void the warranty and lead to improper operation or safety hazards.
4.1. Site Selection
- Outdoor Unit: Select a location with adequate airflow, away from direct sunlight or heat sources, and with sufficient clearance for maintenance.
- Indoor Units: Choose locations that allow for even air distribution within each zone and are structurally sound to support the unit's weight.
Figure 2: GREE Multi+ Ultra Series Outdoor Condenser Unit. This image shows the exterior of the outdoor unit, highlighting its robust construction and fan grille.
4.2. Installation Steps (Overview for Technician)
- Mounting: Securely mount the outdoor condenser unit on a level pad or wall bracket. Mount indoor units according to floor/ceiling specifications.
- Refrigerant Piping: Connect refrigerant lines between the outdoor unit and each indoor unit. Ensure proper sizing and insulation.
- Electrical Wiring: Connect power supply and communication wiring according to the wiring diagram provided with the unit and local electrical codes.
- Vacuuming and Leak Test: Evacuate the refrigerant lines to remove air and moisture, then perform a leak test.
- Test Run: After installation, perform a test run to verify proper operation of all units and modes.
Figure 3: GREE Multi+ Ultra Series Indoor Floor/Ceiling Unit with Remote Controls. This image displays one of the indoor units along with its wireless remote control and a wired wall controller, demonstrating the control options.
5. Operating Instructions
Your GREE Multi+ Ultra Series system can be controlled using the provided wireless remote control, a wired wall controller (if installed), or via a smart device using the built-in WiFi functionality.
5.1. Using the Wireless Remote Control
The remote control allows you to adjust settings for each individual indoor unit. Ensure the remote is pointed towards the indoor unit when transmitting commands.
- Power On/Off: Press the ON/OFF button to start or stop the unit.
- Mode Selection: Press the MODE button to cycle through operating modes: Auto, Cool, Dry, Heat, Fan.
- Temperature Adjustment: Use the TEMP ▲ / ▼ buttons to set your desired temperature.
- Fan Speed: Press the FAN button to select fan speed: Auto, Low, Med, High.
- Swing Function: Use the SWING button to adjust the louver direction for optimal airflow.
- Timer Function: Set the unit to turn on or off automatically at specified times. Refer to the remote control's specific instructions for detailed timer setup.
5.2. Smart Device Control (WiFi)
Each indoor unit is equipped with built-in WiFi, allowing control through a compatible smartphone application. Download the GREE+ app from your device's app store and follow the in-app instructions for pairing and control. This feature enables remote operation and advanced scheduling.
5.3. Intelligent Features
- Intelligent Preheating: In heating mode, the unit may delay fan operation to prevent cold air from blowing out initially.
- Intelligent Defrost: The outdoor unit will automatically enter defrost mode when necessary to maintain heating performance in cold conditions.
- Low Voltage Start-up: The system is designed to operate reliably even with minor voltage fluctuations.
6. Maintenance
Regular maintenance ensures the efficiency and longevity of your GREE mini-split system. Always disconnect power to the unit before performing any maintenance.
6.1. Indoor Unit Maintenance
- Air Filter Cleaning: The indoor units are equipped with washable air filters. Clean them every 2-4 weeks, or more frequently if the unit is used heavily or in dusty environments.
- Open the front panel of the indoor unit.
- Remove the air filters.
- Wash the filters with lukewarm water and a mild detergent. Rinse thoroughly.
- Allow filters to dry completely in a shaded area before reinstalling. Do not expose to direct sunlight.
- Unit Surface Cleaning: Wipe the exterior of the indoor unit with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
6.2. Outdoor Unit Maintenance
- Coil Cleaning: Periodically check the outdoor unit's coil for dirt and debris. Clean with a soft brush or water hose. Avoid bending the coil fins.
- Clearance: Ensure that the area around the outdoor unit is free from obstructions (leaves, snow, debris) to maintain proper airflow.
6.3. Professional Annual Check-up
It is recommended to have a qualified HVAC technician perform an annual inspection and service of your system. This includes checking refrigerant levels, electrical connections, and overall system performance.
7. Troubleshooting
Before contacting service, review the following common issues and solutions. The system's self-diagnosis capabilities may display error codes on the indoor unit or remote control; refer to the full technical manual for specific code interpretations.
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not start | No power supply; Remote control batteries depleted; Timer function active. | Check circuit breaker; Replace remote batteries; Cancel timer setting. |
| Insufficient cooling/heating | Dirty air filters; Blocked outdoor unit; Doors/windows open; Temperature setting incorrect. | Clean air filters; Clear obstructions from outdoor unit; Close all openings; Adjust temperature setting. |
| Unusual noise | Loose parts; Obstruction in fan; Normal operating sounds (e.g., refrigerant flow). | Check for loose components; Remove obstructions; If noise persists or is abnormal, contact service. |
| Water leakage from indoor unit | Clogged drain pipe; Improper installation. | Check and clear drain pipe; Contact a professional for inspection and repair. |
If the problem persists after attempting these solutions, or if you encounter an error code not listed, please contact a qualified service technician.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | GREE (Generic) |
| Model | Multi+ Ultra Series 42,000 BTU 5-Zone Universal Floor/Ceiling 9K+9K+9K+9K+12K |
| ASIN | B0D82QZS5R |
| Capacity | 42,000 BTU (3.5 Tons) |
| Cooling Power | 42,000 British Thermal Units |
| SEER2 Rating | Up to 20 |
| HSPF2 Rating | Up to 10 |
| Installation Type | Split System |
| Form Factor | Mini-Split (Floor/Ceiling Indoor Units) |
| Product Dimensions (Outdoor Unit) | 17.3"D x 42.8"W x 43.4"H |
| Control Method | Remote Control, WiFi (Smart Device) |
| Special Features | Easy to Install (for professionals), Quiet Operation, G10 Inverter, Intelligent Preheating/Defrost, Self-Diagnosis, Washable Air Filters, Corrosion-Resistant Coil |
| Certification | Energy Star |
| Power Source | Corded Electric |
9. Warranty and Support
9.1. Warranty Information
GREE provides a limited warranty for this product:
- Compressor: Limited 7-year warranty for the outdoor unit's compressor.
- Functional Parts: Limited 5-year warranty on all functional parts within the split system units.
Important Warranty Conditions:
- Units must be installed following all state and local codes.
- Units must be registered online through the manufacturer for the warranty to be upheld.
Please refer to the official GREE warranty document included with your product or visit the manufacturer's website for complete terms and conditions.
9.2. Customer Support
For technical assistance, warranty claims, or to locate a certified service technician, please contact GREE customer support. Contact details can typically be found on the manufacturer's official website or in the packaging materials.
Note: Specific contact information is not provided in this manual. Please refer to your product's packaging or the manufacturer's website for the most current support details.
