If the Mijia Air Conditioner Pro Eco 3.5 kW cannot start or power on, please follow these steps:
1. Check whether the power cord is properly connected and the plug is fully inserted;
2. Confirm whether the power outlet is working. If using a power strip, test it with another device. When the air conditioner receives power, it usually makes a beep sound indicating normal power supply;
3. Check if the remote control batteries are depleted. Replace them with new batteries and try again;
4. Use a phone camera to point at the remote control and see if an infrared signal is emitted. A red flashing light on the remote indicates the signal is working;
5. If connected to the Mi Home/Xiaomi Home APP, try to power on the air conditioner through the APP;
6. If the issue remains after these steps, please request after-sales service for further inspection.