1. Rhagymadrodd
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Gree 18,000 BTU Multi21+ Dual-Zone Wall Mount Mini Split Air Conditioner Heat Pump. Please read this manual thoroughly before installation and operation, and retain it for future reference. This system is designed to provide both cooling and heating for two separate zones, utilizing Gree's G10 inverter-driven compressor technology for energy efficiency and consistent comfort.

Ffigur 1.1: Drosoddview of the Gree Multi21+ Dual-Zone Mini Split System. This image displays the complete system, including two indoor wall-mounted units, two remote controls for individual zone management, and a single outdoor condenser unit, illustrating the multi-zone capability.
2. Gwybodaeth Diogelwch
Always adhere to the following safety precautions to prevent injury, damage to property, or damage to the unit. Improper operation due to ignoring instructions may cause harm or damage.
2.1 Rhybuddion Diogelwch Cyffredinol
- Gosodiad Proffesiynol Angenrheidiol: Installation, maintenance, and repair of this unit must be performed by qualified and certified HVAC professionals. Incorrect installation can lead to electric shock, fire, or water leakage.
- Diogelwch Trydanol: Ensure the power supply matches the unit's specifications (208/230V). Do not operate with wet hands. Always disconnect power before servicing.
- Trin oergell: This unit uses R410A refrigerant. Handling of refrigerant must be done by certified personnel only.
- Awyru: Ensure adequate ventilation during installation and maintenance.
- Plant ac Anifeiliaid Anwes: Cadwch blant ac anifeiliaid anwes i ffwrdd o'r uned yn ystod gweithrediad a chynnal a chadw.
- Deunyddiau fflamadwy: Peidiwch â gosod deunyddiau fflamadwy na chwistrellu aerosolau ger yr uned.
2.2 Gofynion Trydanol
The unit requires a 208/230V power supply. All electrical wiring must comply with local and national electrical codes. A dedicated circuit breaker is recommended for the unit.
3. Gosod a Gosod
Proper installation is critical for the performance and longevity of your Gree Mini Split system. It is strongly recommended that installation be performed by a licensed HVAC technician.
3.1 Gwiriadau Cyn Gosod
- Gwiriwch fod yr holl gydrannau'n bresennol a heb eu difrodi.
- Ensure the installation location for both indoor and outdoor units meets clearance requirements and structural integrity.
- Confirm the availability of the required 1/4" x 3/8" line sets (two sets are needed for this dual-zone system), which are not included with the unit.
3.2 Gosod Drosview
- Mounting the Indoor Units: Select appropriate wall locations for each indoor unit, ensuring proper drainage and air circulation.
- Gosod yr Uned Awyr Agored: Choose a stable, level outdoor location with sufficient airflow and clearance from obstructions.
- Cysylltu Llinellau Oergell: Connect the pre-flared refrigerant lines between the indoor and outdoor units. Proper vacuuming of the lines is essential.
- Cysylltiadau Trydanol: Connect the power supply and communication wiring according to the wiring diagram provided in the full installation manual.
- Draenio: Install condensate drain lines for each indoor unit, ensuring proper slope for gravity drainage.
- Leak Checks and Test Run: After all connections are made, perform a leak check and a test run to ensure proper operation.

Ffigur 3.1: Manwl view of an indoor wall-mounted unit. This image highlights the sleek design and digital display of the indoor unit, which should be mounted securely on an interior wall.

Ffigur 3.2: Example of an indoor unit installed in a living room setting. This image demonstrates how the compact design of the indoor unit integrates seamlessly into a modern living space.
4. Cyfarwyddiadau Gweithredu
Your Gree Multi21+ system offers various modes to ensure year-round comfort. Each indoor unit can be controlled independently for dual-zone climate control.
4.1 Dulliau Gweithredu Sylfaenol
- Modd Cŵl: For cooling the room. Set desired temperature using the remote control.
- Modd Gwres: For heating the room. The heat pump efficiently provides warmth.
- Modd Fan: Yn cylchredeg aer heb wresogi na oeri. Gellir addasu cyflymder y ffan.
- Modd Sych (Dadhumidiad): Yn lleihau'r lleithder yn yr ystafell.
- Modd Auto: Automatically selects cooling or heating based on the set temperature and current room temperature.
4.2 Defnydd Rheoli o Bell
Each indoor unit comes with its own remote control. Point the remote directly at the indoor unit when operating. Common functions include:
- Botwm YMLAEN/DIFFODD: Pweru'r uned ymlaen neu i ffwrdd.
- Botwm MODE: Yn cylchdroi trwy ddulliau gweithredu (Oeri, Gwresogi, Ffan, Sychu, Awtomatig).
- Botymau Addasu Tymheredd: Cynyddu neu ostwng y tymheredd gosod.
- Botwm Cyflymder Fan: Yn addasu cyflymder y ffan (Awtomatig, Isel, Canolig, Uchel).
- Botwm swing: Controls the louver direction for optimal air distribution.
- Swyddogaeth Amserydd: Gosodwch yr uned i droi ymlaen neu i ffwrdd yn awtomatig ar amser penodol.

Ffigur 4.1: Visual representation of the cooling and heating capabilities. This image illustrates the system's ability to provide both cool air during warmer periods and warm air during colder periods, ensuring year-round comfort.
4.3 Wi-Fi Control (Optional)
The Gree Multi21+ system offers an option to upgrade with a field-installed Wi-Fi kit accessory (sold separately). This allows you to remotely control the unit using your smartphone via a dedicated application. Consult the Wi-Fi kit's instructions for pairing and setup.

Ffigur 4.2: Users interacting with their smartphones, suggesting remote control capabilities. This image implies the convenience of controlling the air conditioning system from a mobile device, a feature available with the optional Wi-Fi kit.
5. cynnal
Regular maintenance ensures optimal performance, energy efficiency, and extends the lifespan of your unit. Always disconnect power before performing any maintenance.
5.1 Glanhau'r Hidlydd Aer
- Amlder: Clean air filters every two weeks or more frequently depending on usage and air quality.
- Gweithdrefn:
- Agorwch banel blaen yr uned dan do.
- Tynnwch yr hidlyddion aer.
- Glanhewch hidlwyr gyda sugnwr llwch neu golchwch â dŵr llugoer a glanedydd ysgafn.
- Gadewch i'r hidlwyr sychu'n llwyr cyn eu hail-osod.
5.2 Cynnal a Chadw Uned Awyr Agored
- Amlder: Inspect and clean the outdoor unit coils and fins annually, or more often if located in a dusty environment.
- Gweithdrefn:
- Ensure the outdoor unit is powered off.
- Remove any debris (leaves, dirt, etc.) from around the unit.
- Gently clean the coil fins with a soft brush or water hose. Avoid bending the fins.
- Ensure the drainage holes at the base of the unit are clear.
5.3 Gwasanaethu Proffesiynol
It is recommended to have a qualified HVAC technician perform a comprehensive service check on your system annually. This includes checking refrigerant levels, electrical connections, and overall system performance.
6. Datrys Problemau
Before contacting customer support, please refer to the following common issues and their potential solutions.
| Problem | Achos Posibl | Ateb |
|---|---|---|
| Nid yw'r uned yn troi ymlaen. | Dim cyflenwad pŵer; torrwr cylched wedi tripio; batris teclyn rheoli o bell wedi marw. | Gwiriwch y cysylltiad pŵer; ailosodwch y torrwr cylched; newidiwch y batris teclyn rheoli o bell. |
| Oeri/gwresogi annigonol. | Dirty air filters; blocked outdoor unit; low refrigerant; wrong mode selected. | Clean air filters; clear obstructions from outdoor unit; contact technician for refrigerant check; select correct operating mode. |
| Gollyngiad dŵr o uned dan do. | Pibell draenio wedi'i rhwystro; gosodiad amhriodol. | Clear drain pipe; contact technician for inspection. |
| Swn anarferol. | Loose parts; foreign objects in fan; compressor issue. | Check for loose parts; remove foreign objects; contact technician if noise persists. |
If the problem persists after attempting these solutions, please contact a qualified HVAC technician or Gree customer support.
7. manylebau
Key technical specifications for the Gree 18,000 BTU Multi21+ Dual-Zone Mini Split Air Conditioner Heat Pump.
| Nodwedd | Manylyn |
|---|---|
| Rhif Model | MULTI18CLIV200 |
| Gallu | 18,000 BTU (1.5 Tunnell) |
| Parthau | Dual-Zone (9K, 9K) |
| SEER (Cymhareb Effeithlonrwydd Ynni Tymhorol) | 22.00 |
| EER (cymhareb Effeithlonrwydd Ynni) | 12.50 |
| Cyftage | 208/230 folt |
| Math o Oergell | R410A |
| Lefel Sŵn (Uned Awyr Agored) | 56 dB |
| Estimated Room Size Coverage | 600 - 1,000 sq ft |
| Nodweddion Arbennig | Air Purification Filter, G10 Inverter Technology, Optional Wi-Fi Control |
| Deunydd | Dur |
| Lliw | Gwyn |
| Pwysau Eitem | 40 pwys |
| Dimensiynau Cynnyrch | 10 x 29 x 11 inches (Indoor Unit, typical) |
8. Gwarant a Chefnogaeth
Gree products are manufactured to high standards and come with a manufacturer's warranty. Specific warranty terms and conditions may vary. Please refer to the warranty card included with your product or visit the official Gree websafle am wybodaeth fanwl.
8.1 Cefnogaeth i Gwsmeriaid
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Gree customer support or your authorized Gree dealer. Ensure you have your model number (MULTI18CLIV200) and purchase date available when contacting support.
Gallwch ddod o hyd i ragor o wybodaeth ac adnoddau cymorth ar y wefan swyddogol Siop GREE ar Amazon.