1. Wprowadzenie
This manual provides essential information for the safe and efficient operation of your DEMULLER 12000 BTU 4-in-1 Split Air Conditioner and Heater. This unit is designed to provide year-round comfort with cooling, heating, dehumidifying, and fan functions. Please read this manual thoroughly before installation and use, and retain it for future reference.

Image: The DEMULLER 12000 BTU Split Air Conditioner and Heater, showing both indoor and outdoor units, remote control, and installation accessories.
2. Informacje dotyczące bezpieczeństwa
IMPORTANT: PROFESSIONAL INSTALLATION IS NECESSARY. DO NOT ATTEMPT TO INSTALL THIS UNIT YOURSELF. Improper installation can lead to electric shock, fire, serious injury, or death. Always consult a qualified HVAC professional for installation.
- Upewnij się, że zasilanie jest zgodne z wymaganiami urządzenia (230 V).
- Nie obsługiwać urządzenia mokrymi rękami.
- Podczas obsługi i konserwacji urządzenia należy trzymać dzieci i zwierzęta z dala od niego.
- Nie blokuj wlotów ani wylotów powietrza.
- Przed przystąpieniem do czyszczenia lub wykonywania prac konserwacyjnych należy wyłączyć zasilanie.
- If any abnormal conditions occur (e.g., strange smells, smoke), immediately turn off the unit and disconnect power. Contact a service technician.
3. Zawartość opakowania
Your DEMULLER Split Air Conditioner and Heater is shipped in two separate packages. Please verify all components are present upon delivery. If any items are missing or damaged, contact your retailer.

Image: A visual breakdown of the components included in Box One (Indoor Unit, Hanging Board, Instruction Manual, Remote Control, Wall Sheathing) and Box Two (Outdoor Unit, Drain Pipe, Communication Wire, Connection Pipe*2, Wall Sleeve, Putty, Tape, Screws*6).
Pole pierwsze:
- Jednostka wewnętrzna
- Wisząca deska
- Instrukcja obsługi
- Zdalne sterowanie
- Poszycie ścienne
Pole drugie:
- Jednostka zewnętrzna
- Rura spustowa
- Przewód komunikacyjny
- Connection Pipe (x2)
- Tuleja ścienna
- Putty for blocking wall holes
- Taśma
- Śruby (x6)
4. Funkcje produktu
The DEMULLER Split Air Conditioner and Heater offers advanced features for optimal comfort and efficiency:
- Funkcjonalność 4 w 1: Provides Cool, Heat, Dry (dehumidify), and Fan modes for all-season use.
- Wysoka wydajność: 12000 BTU cooling and heating capacity with a 22 SEER2 rating and R32 refrigerant, designed for energy savings.
- Szeroki zasięg: Effectively cools and heats areas up to 750 sq. ft.
- Cicha praca: Zaprojektowane tak, aby zapewniać niski poziom hałasu i spokojne otoczenie.
- Inteligentne sterowanie: Conveniently operate the unit via the included remote control or through a WIFI-enabled application.
- Wydajność przez cały sezon: Operates effectively in temperatures ranging from -4°F (-20°C) to 122°F (50°C).
- Automatic Defrosting & Self-Cleaning: Functions that enhance efficiency and longevity.

Image: Illustration of the unit's 4-in-1 capabilities (Cool, Heat, Dry, Fan) and its ability to operate in extreme temperatures.

Image: Comparison graphic highlighting the 22 SEER2 efficiency and R32 refrigerant for energy savings.

Image: Illustration demonstrating the ultra-quiet operation of the unit, rated at 26dB, suitable for bedrooms.
5. Instalacja
WARNING: PROFESSIONAL INSTALLATION IS MANDATORY. This is a mini-split system that requires specialized tools, knowledge, and refrigerant handling. Attempting self-installation will void the warranty and may result in serious injury or damage to the unit.
The unit ships in two packages (indoor and outdoor units), which may arrive at different times. Ensure both packages are received before scheduling professional installation.
Kluczowe zagadnienia dotyczące instalacji:
- Lokalizacja: Choose a location for both indoor and outdoor units that allows for proper airflow, drainage, and accessibility for maintenance.
- Wymagania elektryczne: The unit requires a dedicated 230V electrical circuit. Ensure your electrical system can support this.
- Długość zestawu linii: The pre-charged line set must be properly sized and installed according to manufacturer specifications.
- Drenaż: Należy zapewnić właściwy odpływ skroplin z jednostki wewnętrznej.
Refer to the detailed installation instructions provided in the separate installation manual for your professional installer.
6. Instrukcja obsługi
Your DEMULLER unit can be controlled using the included remote control or a compatible WIFI application.

Image: Illustration depicting control options via remote and a smartphone application.
6.1 Pilot zdalnego sterowania
The remote control allows you to adjust settings from a distance. Ensure there are no obstructions between the remote and the indoor unit's receiver.

Obraz: szczegółowy view of the remote control, highlighting its various modes (Auto, Cool, Heat, Dry, Fan, Sleep, ECO) and fan speed settings (Low, Mid, High, Turbo).
- Przycisk zasilania: Włącza/wyłącza urządzenie.
- Przycisk trybu: Cycles through operating modes: AUTO, COOL, HEAT, DRY, FAN.
- Regulacja temperatury: Use the UP/DOWN arrows to set the desired temperature (range: 61°F to 86°F / 16°C to 30°C).
- Prędkość wentylatora: Select from Low, Mid, High, or Turbo fan speeds.
- Huśtawka: Włącza lub wyłącza funkcję automatycznego wachlowania żaluzjami.
- Regulator czasowy: Set the 24-hour timer for automatic ON/OFF operations.
- Tryb ekologiczny: Optymalizuje zużycie energii, zapewniając efektywną pracę.
- Tryb uśpienia: Adjusts temperature and fan speed for comfortable sleep and reduced energy use.
- Zastawiać parawanem: Wyłącza podświetlenie wyświetlacza jednostki wewnętrznej.
6.2 WIFI Control
For advanced control and convenience, download the dedicated DEMULLER WIFI application on your smartphone. Follow the in-app instructions to pair your device with the air conditioner. This allows you to control the unit remotely and access additional features.
7. Konserwacja
Regular maintenance ensures optimal performance and longevity of your unit. Always turn off the power supply before performing any maintenance.
7.1 Czyszczenie filtra
The indoor unit's air filters should be cleaned regularly (e.g., every two weeks, depending on usage). Refer to the full manual for instructions on how to remove and clean the filters. Washable filters can be rinsed with water and air-dried.
7.2 Automatyczne samoczyszczenie
The unit features an automatic self-cleaning function that helps prevent mold and bacteria buildup on the evaporator coil. This process typically involves condensation, frosting, and high-temperature sterilization. Consult your remote control or app for how to activate this feature.

Image: Diagram showing the stages of the automatic self-cleaning process for the indoor unit, including condensation, frost, and high-temperature sterilization.
7.3 Konserwacja jednostki zewnętrznej
Periodically check the outdoor unit for any obstructions (leaves, debris) and ensure the coils are clean. This should ideally be done by a professional during annual servicing.
8. Rozwiązywanie Problemów
If you encounter issues with your unit, refer to the following basic troubleshooting guide. For more complex problems, contact a qualified service technician.
| Problem | Możliwa przyczyna | Rozwiązanie |
|---|---|---|
| Jednostka się nie włącza | No power supply; Remote control batteries low; Circuit breaker tripped | Check power connection; Replace remote batteries; Reset circuit breaker |
| Niewystarczające chłodzenie/ogrzewanie | Air filters dirty; Temperature setting incorrect; Doors/windows open; Unit size inadequate for room | Clean air filters; Adjust temperature; Close doors/windows; Consult professional for sizing |
| Niezwykły hałas | Luźne części; Przeszkoda w wentylatorze; Jednostka nie jest wypoziomowana | Skontaktuj się z technikiem serwisowym |
| Wyciek wody z jednostki wewnętrznej | Drain pipe clogged or improperly installed | Skontaktuj się z technikiem serwisowym |
9. Specyfikacje
| Funkcja | Specyfikacja |
|---|---|
| Marka | DEMULLER |
| Numer modelu | ANHUI-SPLITAC |
| Pojemność | 12000 BTU (1 tona) |
| Ocena SEER2 | 22 |
| Tomtage | 230 wolty |
| Obszar zasięgu | Do 750 stóp kwadratowych. |
| Wymiary produktu (jednostka wewnętrzna) | 33.46" szer. x 11.42" wys. x 7.48" gł. |
| Współczynnik kształtu | Mini-split |
| Typ czynnika chłodniczego | R32 |
| Cechy specjalne | Easy to Install (professionally), Washable Filters, WIFI Control |

Image: Dimensional drawing of the indoor unit (33.46 inches wide, 11.42 inches high, 7.48 inches deep) and outdoor unit (27.95 inches wide, 21.81 inches high, 10.24 inches deep).
10. Gwarancja i wsparcie
For warranty information, please refer to the warranty card included with your product or contact DEMULLER customer support. If you have any questions, require technical assistance, or need to report a problem, please contact the manufacturer or your retailer.
Informacje kontaktowe: Refer to the product packaging or the official DEMULLER webstrona zawierająca najnowsze informacje na temat obsługi klienta.