1. Introduzione
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Gree Multi21+ Dual-Zone Mini Split Air Conditioner and Heat Pump 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.
2. Informazioni sulla sicurezza
Istruzioni importanti per la sicurezza:
- Installation must be performed by a qualified and certified HVAC technician in accordance with all local and national electrical and safety codes.
- Non tentare di riparare o manutenere l'unità autonomamente. Affidare qualsiasi intervento di assistenza a personale qualificato.
- Ensure the power supply is disconnected before any maintenance or cleaning procedures.
- Use only the specified refrigerant (R410A) and ensure proper handling to prevent environmental harm.
- Tenere bambini e animali domestici lontani dall'unità esterna durante il funzionamento.
- Non bloccare l'ingresso o l'uscita dell'aria delle unità interne o esterne.
3. Prodotto finitoview
3.1 Componenti del sistema
The Gree Multi21+ Dual-Zone system consists of an outdoor condenser unit, two indoor wall-mounted units, and two remote controls.

Image 3.1.1: Complete Gree Multi21+ Dual-Zone Mini Split System. This image displays the outdoor condenser unit, two indoor wall-mounted units, and two handheld remote controls, illustrating the full system configuration.
3.2 Caratteristiche principali
- Comfort a doppia zona: Independently control two separate indoor zones.
- G10 Inverter Technology: Provides energy savings, reduced noise, and stable temperature control.
- Wi-Fi incorporato: Allows for remote control and monitoring via a smartphone application.
- Riscaldamento e raffreddamento: Operates as both an air conditioner and a heat pump.
- Valutazione SEER elevata: SEER 21 for efficient operation.

Image 3.2.1: Icons representing key features of the Gree Multi21+ system, including a 5-year limited parts warranty, Wi-Fi readiness, heating and cooling capabilities, ETL listing, G10 Inverter Technology, AHRI certification, and Energy Star rating.
3.3 Specifiche
| Specificazione | Valore |
|---|---|
| Numero di modello | MULTI18CLIVV200 |
| Modello unità esterna | MULTI18HP230V1CO |
| Indoor Unit Model (x2) | LIVV09HP230V1AHW |
| Total Cooling/Heating Capacity | Potenza nominale: 18,000 BTU |
| SEER (rapporto di efficienza energetica stagionale) | 21 |
| Voltage | 208/230 V |
| Refrigerante | R-410A |
| Livello di rumore (unità esterna) | 59 decibel |
| Copertura della stanza | 600 - 1,000 piedi quadrati |

Image 3.3.1: A table detailing the width, height, and depth measurements for various BTU sizes of LIVV Gen 3 Multi indoor and outdoor units. This specific system uses 9,000 BTU indoor units and an 18,000 BTU outdoor unit.
4. Configurazione e installazione
Installazione professionale richiesta: Due to the complexity of refrigerant lines, electrical connections, and system charging, professional installation by a certified HVAC technician is mandatory for this unit. Improper installation can lead to system damage, safety hazards, and void the warranty.
4.1 Selezione del sito
- Unità interne: Select locations that allow for even air distribution within the designated zones. Ensure sufficient clearance around the unit for airflow and maintenance.
- Unità esterna: Choose a location with good airflow, away from direct sunlight or heat sources, and on a stable, level surface. Ensure adequate clearance for service access and proper ventilation.

Image 4.1.1: An illustrative floor plan demonstrating potential placements for indoor and outdoor mini-split units to achieve multi-zone climate control within a home, showing different temperature settings in various rooms.
4.2 Line Set Requirements
This system requires two 1/4" x 3/8" line sets (not included) to connect the indoor units to the outdoor unit. The length of the line sets will depend on the installation layout.
5. Istruzioni per l'uso
Your Gree Multi21+ system is controlled primarily via the wireless remote control or the built-in Wi-Fi feature.

Image 5.0.1: The remote control for the Gree Mini Split System, featuring an LCD display and buttons for mode selection, fan speed, swing, sleep, timer, and other functions.
5.1 Funzioni del telecomando
- Pulsante di accensione: Accende o spegne l'unità.
- Pulsante MODE: Passa attraverso le modalità di funzionamento: Auto, Raffreddamento, Deumidificazione, Ventilatore, Riscaldamento.
- Pulsante VENTOLA: Regola la velocità della ventola (Auto, Bassa, Media, Alta).
- Pulsanti TEMP ▲/▼: Regola l'impostazione della temperatura desiderata.
- Pulsante OSCILLAZIONE: Controlla il movimento verticale delle alette per la distribuzione dell'aria.
- Tasto SONNO: Activates sleep mode for energy-efficient and quiet operation during sleep.
- ACCENSIONE/SPEGNIMENTO TIMER: Imposta un timer per l'accensione o lo spegnimento automatico dell'unità.
- Pulsante SENTO: Activates the 'I Feel' function, which senses the temperature at the remote control's location for more precise comfort.
- X-FAN Button: Activates the X-Fan function to dry the indoor coil after cooling operation, preventing mold and mildew.
Modalità operative 5.2
- Modalità FREDDO: Provides cooling. Set desired temperature.
- Modalità RISCALDAMENTO: Provides heating. Set desired temperature.
- Modalità ASCIUGATURA: Deumidifica la stanza.
- Modalità VENTOLA: Fa circolare l'aria senza riscaldare o raffreddare.
- Modalità automatica: L'unità seleziona automaticamente la modalità appropriata (raffreddamento, riscaldamento o ventilazione) in base alla temperatura ambiente e alla temperatura impostata.
5.3 Connettività Wi-Fi
The indoor units feature built-in Wi-Fi, eliminating the need for a separate Wi-Fi kit. Refer to the dedicated Wi-Fi setup guide (usually provided separately or available online) for instructions on connecting your unit to your home network and controlling it via the Gree+ app.
6. Manutenzione
Regular maintenance ensures optimal performance and extends the lifespan of your Gree Multi21+ system. Always disconnect power before performing any maintenance.
6.1 Indoor Unit Filter Cleaning
The air filters in the indoor units should be cleaned every two weeks or more frequently depending on usage and air quality.
- Aprire il pannello frontale dell'unità interna.
- Rimuovere i filtri dell'aria.
- Clean the filters with a vacuum cleaner or wash them with lukewarm water and mild detergent. Allow them to dry completely before reinstallation.
- Reinstallare i filtri asciutti e chiudere il pannello frontale.
6.2 Pulizia dell'unità esterna
The outdoor unit's coils and fins should be kept free of dirt, leaves, and other debris. Periodically inspect and gently clean the outdoor unit with a soft brush or water hose. Avoid bending the fins.

Immagine 6.2.1: Un dettaglio view of the Gree Multi21+ outdoor condenser unit, highlighting its protective grille and fan assembly, which requires periodic cleaning to maintain efficiency.
6.3 Assistenza professionale
It is recommended to have your system professionally inspected and serviced by a qualified technician annually to ensure optimal performance, check refrigerant levels, and clean internal components.
7. Risoluzione Dei Problemi
Prima di contattare l'assistenza, riview i seguenti problemi comuni e le relative soluzioni:
| Problema | Possibile causa | Soluzione |
|---|---|---|
| L'unità non si avvia | Nessuna alimentazione; batterie del telecomando scariche; interruttore automatico scattato. | Controllare l'alimentazione, sostituire le batterie del telecomando, ripristinare l'interruttore automatico. |
| Raffreddamento/riscaldamento insufficiente | Dirty air filters; blocked outdoor unit; wrong mode selected; temperature setting incorrect. | Clean filters, clear obstructions from outdoor unit, select correct mode, adjust temperature. |
| Rumore insolito | Loose parts; debris in fan; refrigerant flow noise (normal). | Inspect for loose parts or debris. If persistent or loud, contact service. |
| Perdita d'acqua dall'unità interna | Tubo di scarico intasato; installazione non corretta. | Contattare un tecnico qualificato per l'ispezione e la riparazione. |
If the problem persists after attempting these solutions, or if you encounter an error code, please contact a qualified HVAC technician for assistance.
8. Informazioni sulla garanzia
The Gree Multi21+ system comes with a 5 anno di garanzia limitata sulle parti. For specific terms, conditions, and registration details, please refer to the warranty card included with your product or visit the official Gree websito. Conservare la prova d'acquisto per eventuali reclami in garanzia.
9. Assistenza clienti
For further assistance, technical support, or to locate a certified service provider, please visit the GREE Store on Amazon or the official Gree websito.





