What to do if the Mijia Air Conditioner Pro Eco 5-Star 1 PK Inverter makes noise loudly when it is running?

The Mijia Air Conditioner Pro Eco 5-Star 1 PK Inverter has a noise level ranging from 23dB(A) to 38dB(A) for the indoor unit, from silent operation to peak performance, while the outdoor unit maintains a noise level of 48dB(A).
If the air conditioner makes a noise loudly, you can follow these steps to troubleshoot:
1. Normal sounds include the outdoor fan, liquid flow, and compressor noise;
2. If the noise comes from pipe clanging or metal parts vibrating, try adjusting the pipes or adding vibration dampening material and adding rubber pads to the machine feet, etc;
3. Harsh refrigerant sounds such as howling: Check the source of the sound, especially whether the piping system is blocked;
4. If the noise continues, contact the after-sales service center for further inspection.