1. Product Overview
The Gree Multi21+ Tri-Zone Floor Console Mini Split Air Conditioner Heat Pump system provides efficient heating and cooling for up to three separate zones. This system utilizes Gree's G10 inverter-driven compressor technology and R410A refrigerant for energy efficiency and consistent temperature control.
The indoor floor console units are designed for discreet placement, typically mounted low on a wall, and feature easy access for filter maintenance.

Image 1.1: Overview of the Gree Multi21+ Tri-Zone Mini Split System, showing three indoor floor console units and the outdoor condenser unit.
Key Features:
- Tri-Zone Capability: Heats and cools up to three independent zones.
- G10 Inverter Technology: Enhances energy efficiency, reduces noise, and maintains stable room temperatures.
- Floor Console Design: Aesthetically pleasing indoor units that can be mounted low on a wall.
- Eco-Friendly Refrigerant: Uses R410A refrigerant.
- Quiet Operation: Designed for reduced outdoor noise levels.
2. Setup and Installation
Proper installation of the Gree Multi21+ system is crucial for optimal performance and to ensure warranty validity. Installation must be performed by a state-licensed HVAC contractor.
2.1 Components
The system includes multiple indoor floor console units and a single outdoor condenser unit. Each indoor unit is controlled by its own remote.

Image 2.1: Three indoor floor console units, each accompanied by its remote control.
2.2 Indoor Unit Placement
Indoor floor console units can be mounted as low as six inches above the floor. Ensure adequate clearance for airflow and maintenance access.

Image 2.2: Front view of an indoor floor console unit, showing its compact design.

Image 2.3: Side view of an indoor floor console unit, illustrating its depth and connections.
2.3 Outdoor Unit Placement
The outdoor condenser unit should be placed on a stable, level surface with sufficient clearance for airflow around all sides. Refer to the detailed installation manual provided with the unit for specific clearance requirements.

Image 2.4: Front view of the outdoor condenser unit, featuring the protective grille and Gree branding.
2.4 Required Materials (Not Included)
- 1/4" x 3/8" line set (two sets required for this tri-zone system).
- Appropriate electrical wiring and disconnects as per local codes.
- Mounting hardware for indoor and outdoor units.
3. Operating Instructions
Each indoor unit is controlled independently using its dedicated wireless remote control. The remote allows you to adjust temperature settings, operating modes (cooling, heating, fan, dry), fan speed, and other functions.
3.1 Basic Operation
- Power On/Off: Press the power button on the remote to turn the unit on or off.
- Mode Selection: Use the 'Mode' button to cycle through available operating modes (Cool, Heat, Fan, Dry, Auto).
- Temperature Adjustment: Use the 'Up' and 'Down' arrow buttons to set your desired temperature.
- Fan Speed: Adjust the fan speed using the 'Fan' button. Options typically include Auto, Low, Medium, and High.
3.2 Advanced Functions
Refer to the specific remote control manual for detailed instructions on advanced features such as timer settings, sleep mode, and swing functions.

Image 3.1: An indoor floor console unit seamlessly integrated into a living space.
4. Maintenance
Regular maintenance ensures the longevity and efficiency of your Gree Multi21+ system. Always turn off the unit and disconnect power before performing any maintenance.
4.1 Filter Cleaning
The indoor floor console units feature front panel access to the air filter for ease of cleaning. It is recommended to clean the air filters every two weeks or more frequently depending on usage and air quality.
- Open the front panel of the indoor unit.
- Carefully remove the air filter(s).
- Clean the filter(s) using a vacuum cleaner or by washing with lukewarm water and mild detergent. Allow to dry completely before reinstallation.
- Reinstall the dry filter(s) and close the front panel.
4.2 Professional Maintenance
Annual professional maintenance by a licensed HVAC technician is recommended to inspect refrigerant levels, clean coils, check electrical connections, and ensure overall system health.
5. Troubleshooting
If you encounter issues with your Gree Multi21+ system, refer to the following basic troubleshooting steps. For complex problems or issues not resolved by these steps, contact a licensed HVAC technician.
5.1 Common Issues
- Unit not turning on: Check power supply, circuit breaker, and ensure remote control batteries are functional.
- Insufficient cooling/heating: Verify correct mode selection and temperature setting. Check if air filters are clean and not obstructed. Ensure outdoor unit is not blocked.
- Unusual noises: Minor operational noises are normal. Loud or persistent unusual noises may indicate a problem requiring professional inspection.
- Water leakage: Check condensate drain line for blockages. Ensure indoor unit is level.
Always consult the comprehensive troubleshooting guide in the full product manual or contact a qualified service professional for assistance.
6. Technical Specifications
Below are key technical specifications for the Gree Multi21+ Tri-Zone Floor Console Mini Split Air Conditioner Heat Pump system (Model: MULTI36CCONS302).
| Specification | Value |
|---|---|
| Manufacturer | GREE |
| Part Number | MULTI36CCONS302 |
| Voltage | 230 Volts |
| Installation Method | Split system |
| Sound Level (Outdoor Unit) | 56 Decibels |
| Special Features | Eco-friendly |
| Refrigerant Type | R410A |
6.1 Unit Dimensions (W x H x D)

Image 6.1: Dimensions for indoor and outdoor units by BTU capacity.
| Unit Type | BTU Capacity | Dimensions (W x H x D) |
|---|---|---|
| Indoor Units | 9,000 BTU | 27.6" x 23.6" x 8.5" |
| 12,000 BTU | 27.6" x 23.6" x 8.5" | |
| 18,000 BTU | 27.6" x 23.6" x 8.5" | |
| Outdoor Units | 18,000 BTU | 38" x 27.6" x 15.6" |
| 24,000 BTU | 38" x 31.1" x 17.3" | |
| 30,000 BTU | 38.4" x 31" x 17.3" | |
| 36,000 BTU | 42.5" x 43.9" x 18.9" | |
| 42,000 BTU | 42.5" x 43.9" x 18.9" |
7. Warranty and Support
Gree provides a limited warranty for the Multi21+ Tri-Zone system.
7.1 Warranty Terms
- Parts Warranty: 5 years.
- Compressor Warranty: 7 years.
Important: To be eligible for warranty coverage, installation must be performed by a state-licensed HVAC contractor.

Image 7.1: Product certifications and warranty highlights.
7.2 Customer Support
For technical support, warranty claims, or service inquiries, please contact your licensed HVAC installer or refer to the official Gree website for customer service contact information.





