1. Introduktion og systemoversigtview
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Gree Multi21+ Dual-Zone Concealed Duct Mini Split Air Conditioner Heat Pump. This system is designed to provide comfortable heating and cooling for two separate zones, utilizing a single outdoor unit and two concealed duct indoor units. The G10 inverter technology ensures energy efficiency and stable room temperatures.
The system uses eco-friendly R410A refrigerant and operates on 208/230V power, offering a Seasonal Energy Efficiency Ratio (SEER) of 21.

A collection of icons highlighting key features and certifications: 5-year parts warranty, R410A refrigerant, heating and cooling capabilities, ETL listing, G10 Inverter Technology, AHRI certification, and Energy Star rating.
2. Sikkerhedsoplysninger
Vigtig: Installation, maintenance, and repair of this equipment must be performed by a state-licensed HVAC contractor. Improper installation or service can result in electric shock, fire, property damage, personal injury, or death. Always follow local and national electrical and building codes.
- Sørg for, at strømforsyningen passer til enhedens krav (208/230V).
- Forsøg ikke at modificere enheden eller dens komponenter.
- Hold børn og kæledyr væk fra udendørsenheden.
- Turn off all power to the unit before any inspection or maintenance.
3. Komponenter overview
The Gree Multi21+ Dual-Zone system consists of the following main components:
- Udendørs kondensatorenhed: Huser kompressoren og den udendørs spole.
- Concealed Duct Indoor Units (x2): Designed to be hidden above suspended ceilings or within open closet spaces, delivering conditioned air via ducting.
- Fjernbetjening: Til betjening af indendørsenhederne.

Image showing the Gree Multi21+ outdoor condenser unit, featuring a protective grille and the Gree logo.

Image of the Gree Multi21+ concealed duct indoor unit, designed for hidden installation above ceilings or within spaces.
4. Opsætning og installation
Installation of the Gree Multi21+ system requires specialized knowledge and tools. It skal udføres af en statsautoriseret VVS-entreprenør to ensure proper function, safety, and warranty eligibility.
- Valg af websted: The outdoor unit should be placed on a stable, level surface with adequate clearance for airflow. Indoor units are designed for concealed installation within ceiling plenums or similar hidden spaces, requiring ductwork to distribute air.
- Linjesæt: The system requires 1/4" x 3/8" line sets (x2) for refrigerant connections between the outdoor unit and each indoor unit. These are not included and must be purchased separately.
- Elektriske forbindelser: Proper electrical wiring (208/230V) and circuit protection are crucial. All electrical work must comply with local codes.
- Kanaler: The concealed indoor units require custom ductwork to connect to supply and return air grilles in the conditioned spaces.
- Kondensatafløb: Proper drainage for condensate water from the indoor units must be established.

An illustrative diagram showing how a multi-zone mini-split system can maintain different temperatures in various rooms of a house.
5. Betjeningsvejledning
Each indoor unit is controlled independently via its dedicated remote control. Refer to the remote control's specific manual for detailed button functions.
- Tænd/sluk: Tryk på tænd/sluk-knappen på fjernbetjeningen for at tænde eller slukke for enheden.
- Valg af tilstand: Select desired operating mode (Cool, Heat, Fan, Dry, Auto) using the 'Mode' button.
- Temperaturjustering: Use the temperature up/down buttons to set your desired temperature. The G10 inverter technology will maintain this temperature steadily.
- Blæserhastighed: Adjust the fan speed (Auto, Low, Medium, High) to control airflow.
- Timer funktion: Indstil enheden til at tænde eller slukke automatisk på bestemte tidspunkter.

Graphic illustrating the dual functionality of the system, providing both cooling and heating capabilities.
6. Vedligeholdelse
Regular maintenance ensures optimal performance and longevity of your system. Always disconnect power before performing any maintenance.
- Rengøring af luftfilter: The indoor units have air filters that should be cleaned regularly (e.g., monthly, or more often depending on usage and air quality). Refer to your indoor unit's specific manual for filter access and cleaning instructions.
- Rengøring af udendørsenhed: Keep the outdoor unit clear of debris, leaves, and obstructions. Periodically clean the outdoor coil with a soft brush or water hose (ensure power is off).
- Professionel inspektion: It is recommended to have a licensed HVAC technician perform an annual inspection and tune-up of the entire system.
7. Fejlfinding
Før du kontakter service, skal du kontrollere følgende almindelige problemer:
- Enheden tænder ikke: Kontroller strømforsyning, afbryder og batterier i fjernbetjeningen.
- Utilstrækkelig køling/opvarmning: Ensure air filters are clean, temperature settings are correct, and there are no obstructions to airflow at the grilles or outdoor unit.
- Usædvanlige lyde: Minor operational noises are normal. Loud or unusual noises may indicate a problem requiring professional attention.
- Vandlækager: Check condensate drain lines for blockages. If leaks persist, contact a technician.
For persistent issues or error codes displayed on the indoor unit, contact a licensed HVAC professional for diagnosis and repair.
8. Specifikationer
| Feature | Specifikation |
|---|---|
| Mærke | GRØT |
| Modelnummer | MULTI36CDUCT200 |
| Kapacitet | 36,000 BTU (3 tons) |
| Kølekraft | 36,000 britiske termiske enheder |
| Sæsonbestemt energieffektivitetsforhold (SEER) | 21 |
| Voltage | 208/230 volt |
| Støjniveau (udendørsenhed) | 50 decibel |
| Kølemiddel | R-410A |
| Kontrolmetode | Fjernbetjening |
| Varens vægt | 198 Pounds (Outdoor Unit) |
| UPC | 841999170714 |

Table detailing the width, height, and depth measurements for various BTU capacities of Gree DUCT-A indoor and outdoor units.
9. Garantioplysninger
The manufacturer's warranty terms for this Gree Multi21+ system include:
- 5 år på reservedele
- 7 Years on the Compressor
Vigtig: To be eligible for this warranty, installation must be performed by a state-licensed HVAC contractor. Failure to comply with this requirement may void the warranty.
10. Support
For technical assistance, troubleshooting beyond basic steps, or warranty claims, please contact your installing HVAC contractor or the Gree customer support. Ensure you have your model number (MULTI36CDUCT200) and proof of professional installation readily available.
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