1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Olimpia Splendid Mystral S1 E 9000 BTU Monosplit Inverter Air Conditioner. Please read it thoroughly before using the appliance and keep it for future reference.
The Mystral S1 E series offers advanced climate control with high efficiency, providing cooling, heating, dehumidification, and ventilation functions. Its integrated Wi-Fi allows for convenient control via a smartphone application.
2. Safety Information
Always follow basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, or injury. This appliance is intended for domestic use only. Do not attempt to repair or modify the unit yourself. Contact qualified service personnel for all repairs and maintenance.
- Ensure the power supply matches the specifications on the unit's rating label.
- Do not insert objects into the air outlet or inlet.
- Keep the unit away from flammable materials.
- Ensure proper ventilation for the outdoor unit.
- Children should be supervised to ensure they do not play with the appliance.
3. Product Features
The Olimpia Splendid Mystral S1 E 9000 BTU Monosplit Inverter Air Conditioner is designed with several features to enhance your comfort and convenience:
- Monosplit Inverter Technology: Ensures efficient air distribution and rapid temperature adjustment.
- Multi-functional: Provides cooling, heating, dehumidification, and ventilation for year-round comfort.
- High Efficiency: Utilizes R32 refrigerant and achieves A++ energy class. Features Golden Fin treatment on the outdoor unit to prevent corrosion.
- Air Purification: Integrated anti-dust filter and self-clean function automatically clean and dry the evaporator, removing dust, mold, and grease for cleaner air.
- Multiple Operating Modes: Includes Timer, Eco, Sleep, Quiet, Turbo, and Swing functions. Auto-Restart function restores previous settings after a power outage. Auto-Diagnosis displays error codes for easy troubleshooting.
- Integrated Wi-Fi: Control all functions remotely via the OS HOME smartphone application.
4. Components Overview
Your Mystral S1 E system consists of an indoor unit, an outdoor unit, and a remote control. The integrated Wi-Fi module allows for smartphone control.

Figure 4.1: Indoor Unit. This unit is installed inside your room and is responsible for distributing conditioned air.

Figure 4.2: Outdoor Unit. This unit is installed outside and contains the compressor and condenser coil.

Figure 4.3: Complete System with Remote Control and Wi-Fi connectivity.
5. Installation
Installation of the Olimpia Splendid Mystral S1 E air conditioner should be performed by qualified and certified technicians to ensure proper functioning and safety. Incorrect installation can lead to refrigerant leakage, electric shock, fire, or water leakage.
The installation process typically involves mounting the indoor and outdoor units, connecting refrigerant lines and electrical wiring, and ensuring proper drainage. The outdoor unit features a Golden Fin treatment for enhanced durability against atmospheric agents.
Video 5.1: Official product video for Mystral S1, demonstrating key features and components. This video provides a visual overview of the air conditioner.
6. Operating Instructions
Your air conditioner offers various modes and functions to optimize your comfort. Control can be achieved via the supplied remote control or the OS HOME smartphone application.
6.1. Operating Modes
- Cooling (Raffrescamento): Reduces room temperature. Ideal for hot weather.
- Heating (Riscaldamento): Increases room temperature. Suitable for cold weather.
- Dehumidification (Deumidificazione): Reduces humidity levels in the room.
- Fan (Ventilazione): Circulates air without cooling or heating.

Cooling

Heating

Dehumidification

Ventilation
6.2. Special Functions
- Timer: Set the unit to turn on or off automatically at a specified time.
- Eco: Energy-saving mode for reduced power consumption.
- Sleep: Adjusts temperature and fan speed for comfortable sleep.
- Quiet: Operates at a lower fan speed for reduced noise.
- Turbo: Provides maximum cooling or heating power for rapid temperature changes.
- Swing: Controls the vertical oscillation of the air flap for even air distribution.
- Auto-Restart: Automatically resumes operation with previous settings after a power interruption.
- Auto-Diagnosis: Displays error codes on the unit's display in case of malfunction.
6.3. Wi-Fi Control (OS HOME App)
The integrated Wi-Fi module allows you to control your air conditioner from anywhere using the OS HOME smartphone application. Download the app from your device's app store.

Figure 6.1: OS HOME App interface for remote control of your air conditioner.
7. Maintenance
Regular maintenance ensures optimal performance, air quality, and longevity of your air conditioner.
7.1. Filter Cleaning
The indoor unit is equipped with an anti-dust filter. Clean the filter regularly (e.g., every two weeks or as needed) to maintain air quality and efficiency. Refer to the detailed instructions in the full product manual for filter removal and cleaning procedures.

Figure 7.1: The indoor unit in a typical room setting, highlighting its discreet design.
7.2. Self-Clean Function
The Mystral S1 E features a self-clean function that automatically cleans and dries the evaporator, preventing the accumulation of dust, mold, and grease. Activate this function periodically to ensure hygienic operation.
7.3. Outdoor Unit Maintenance
The outdoor unit's Golden Fin treatment provides enhanced resistance against corrosive atmospheric agents. Periodically inspect the outdoor unit for any obstructions or debris and ensure clear airflow.
8. Troubleshooting
If you encounter issues with your air conditioner, refer to the following common troubleshooting tips. For persistent problems or error codes displayed via the Auto-Diagnosis function, contact qualified service personnel.
- Unit does not turn on: Check power supply, circuit breaker, and ensure the remote control batteries are functional.
- Insufficient cooling/heating: Verify correct mode selection, temperature setting, and ensure air filters are clean. Check for any obstructions to airflow.
- Unusual noises: Minor noises during operation are normal. Excessive or unusual noises may indicate a problem; contact service.
- Water leakage: Check drainage hose for blockages or improper installation.
- Error Codes: If an error code appears on the display, consult the full product manual for specific meanings and recommended actions, or contact customer support.
9. Technical Specifications
Below are the key technical specifications for the Olimpia Splendid Mystral S1 E 9000 BTU Monosplit Inverter Air Conditioner:
| Feature | Specification |
|---|---|
| Manufacturer | Olimpia Splendid S.p.A. |
| Model Number | Mystral S1 9 |
| Cooling Capacity | 9000 BTU/h |
| Refrigerant Gas | R32 |
| Energy Efficiency Class (Cooling) | A++ |
| Energy Efficiency Class (Heating) | A+ |
| Seasonal Energy Efficiency Ratio (SEER) | 20 |
| Sound Level | 51 Decibel |
| Power Consumption (Cooling) | 3.9 KW |
| Voltage | 220 V |
| Dimensions (Product) | 29.8P x 72l x 47.3H cm |
| Weight | 28 Kilograms |
| Special Features | Inverter, Automatic Cleaning, Integrated WiFi, Swing Function |
| Included Components | Remote Control |
10. Warranty and Support
Your Olimpia Splendid Mystral S1 E air conditioner comes with a manufacturer's warranty. Please refer to the warranty card included with your product for specific terms and conditions. For technical assistance, spare parts, or service requests, please contact Olimpia Splendid customer support or an authorized service center.
You can find more information and support on the official Olimpia Splendid website or through your retailer.