1. Introdución
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Gree Multi21+ Quad-Zone Floor Console Mini Split Air Conditioner Heat Pump system. This system is designed to provide heating and cooling for up to four zones without the need for distribution boxes, utilizing Gree's G10 inverter-driven compressor and eco-friendly R410A refrigerant.
2. Información de seguridade
Please read all safety warnings and instructions carefully before installing or operating this appliance. Failure to follow these instructions may result in property damage, personal injury, or death.
- Instalación profesional necesaria: Installation, maintenance, and repair of this unit must be performed by a state-licensed HVAC contractor. Improper installation can lead to electric shock, fire, water leakage, or other hazards.
- Seguridade eléctrica: Ensure the unit is properly grounded and connected to a dedicated power supply as specified. Do not operate with wet hands.
- Manipulación de refrixerantes: The system uses R410A refrigerant. Only qualified personnel should handle refrigerant.
- Liquidacións: Manteña unha separación adecuada arredor das unidades interiores e exteriores para unha correcta circulación do aire e acceso ao servizo técnico.
3. Produto rematadoview
The Gree Multi21+ system consists of an outdoor condenser unit and multiple indoor floor console units, each controlled independently.

Figura 3.1: Acabadoview of the Gree Multi21+ Quad-Zone Mini Split System, showing four indoor floor console units and one outdoor condenser unit.

Figura 3.2: Fronte view of a Gree Multi21+ Floor Console indoor unit, including the display panel and a remote control for operation.

Figura 3.3: Lado view of a Gree Multi21+ Floor Console indoor unit, illustrating its compact design and air intake vents.

Figura 3.4: Fronte view of the Gree Multi21+ outdoor condenser unit, showing the protective grille for the fan and the GREE branding.
4. Configuración e instalación
Installation of the Gree Multi21+ system requires specialized knowledge and tools. It is mandatory that installation be performed by a state-licensed HVAC contractor to ensure proper function, safety, and warranty eligibility.
4.1 Key Installation Requirements:
- Conxunto de liñas: The system requires 1/4" x 3/8" line sets (four sets for this quad-zone model), which are not included and must be purchased separately.
- Conexión eléctrica: The unit operates on 208/230V power. A dedicated circuit is required.
- Montaxe: Indoor units can be mounted as low as six inches above the floor. Ensure stable and level mounting for both indoor and outdoor units.
- Drenaxe: Proper condensate drainage must be established for each indoor unit.
5. Instrucións de funcionamento
Your Gree Multi21+ system is controlled via a wireless remote control for each indoor unit. The G10 inverter technology ensures quiet, energy-efficient comfort by maintaining a steady room temperature without the harsh starts and stops of conventional systems.
5.1 Funcionamento básico:
- Encendido/apagado: Use the power button on the remote control to turn the unit on or off.
- Selección de modo: Select desired operating mode (Cool, Heat, Fan, Dry, Auto) using the mode button.
- Axuste de temperatura: Adjust the set temperature using the up/down arrows.
- Velocidade do ventilador: Select desired fan speed (Auto, Low, Medium, High).
- Modo de suspensión: Activates a quiet, energy-saving operation for nighttime use.
6. Mantemento
Regular maintenance ensures optimal performance and longevity of your Gree Multi21+ system. Always turn off the power supply to the unit before performing any maintenance.
6.1 Limpeza do filtro:
- The indoor floor console units feature front panel access to the air filter for ease of cleaning.
- Clean the air filters every two weeks, or more frequently depending on usage and air quality.
- Wash filters with lukewarm water and a mild detergent, rinse thoroughly, and allow to air dry completely before reinstallation.
6.2 Limpeza xeral:
- Wipe the indoor and outdoor unit surfaces with a soft, damp pano. Non use produtos químicos agresivos ou produtos de limpeza abrasivos.
- Asegúrate de que as serpentinas da unidade exterior estean libres de residuos (follas, sucidade) para manter un intercambio de calor eficiente.
7 Solución de problemas
Antes de contactar co servizo técnico, volva aview os seguintes problemas e solucións comúns:
| Problema | Causa posible | Solución |
|---|---|---|
| A unidade non funciona | No power; remote control batteries low; incorrect mode selected | Check circuit breaker; replace remote batteries; select correct operating mode |
| Quecemento/refrixeración insuficiente | Dirty air filter; blocked outdoor unit; temperature setting incorrect | Clean air filter; clear obstructions from outdoor unit; adjust temperature setting |
| Ruído insólito | Loose parts; foreign object in fan; refrigerant flow noise (normal) | Inspect for loose parts; remove obstructions; consult manual for normal operating sounds |
For issues not resolved by these steps, contact a licensed HVAC professional.
8. Especificacións
Key technical specifications for the Gree Multi21+ Quad-Zone Floor Console Mini Split Air Conditioner Heat Pump (Model MULTI36CCONS405).
| Característica | Especificación |
|---|---|
| Marca | GREE |
| Número de modelo | MULTI36CCONS405 |
| Capacity (Cooling Power) | 36,000 BTU (3 toneladas) |
| Índice de eficiencia enerxética estacional (SEER) | 21 |
| Voltage | 230 voltios |
| Refrixerante | R-410A (Non-Ozone Depleting) |
| Característica especial | G10 Inverter Technology |
| Método de instalación | Sistema dividido |
| Método de control | Mando a distancia |
| Certificacións | ETL Listed, AHRI Certified, Energy Star (except 42k model) |
8.1 Unit Dimensions:

Figura 8.1: Dimensions (Width x Height x Depth) for various BTU indoor and outdoor units. For this 36,000 BTU system, refer to the 12,000 BTU indoor unit dimensions for each console and the 36,000 BTU outdoor unit dimensions.
9. Garantía e soporte
9.1 Manufacturer's Warranty:
The manufacturer's warranty terms include a 5-year warranty on parts and a 7-year warranty on the compressor. Please note that warranty eligibility requires installation to be performed by a state-licensed HVAC contractor.
9.2 Soporte técnico:
For technical assistance, warranty claims, or service inquiries, please contact your installing HVAC contractor or the Gree customer support line. Ensure you have your model number (MULTI36CCONS405) and date of installation readily available.





