1. Turn off the air conditioner power supply, and remove the air conditioner filter and the drum impeller.

2. Use a soft brush or vacuum cleaner to remove the dust and dirt on the surface of the drum impeller.

3. Mix with clean water and neutral detergent, and pour the mixture into the watering can.

4. Spray the watering can on the surface of the drum impeller to allow the detergent to fully penetrate.

5. Wipe the surface of the drum impeller with a soft brush or sponge to thoroughly remove dirt.

6. Clean the surface of the drum impeller with clear water to ensure that the detergent and dirt are completely removed.

7. Dry the surface of the roller impeller with a clean towel or paper towel to ensure that the surface is dry.

8. Put the drum impeller back into the air conditioner and reinstall the filter screen.

9. Turn on the air conditioner and test whether the air conditioner works normally.

Precautions:

1. When cleaning the drum impeller, be sure to pay attention to safety to avoid electric shock or other accidents.

2. The cleaning agent should be neutral to avoid damaging the drum impeller.

3. When cleaning the drum impeller, avoid water from entering the air conditioner to avoid failure.

4. When cleaning the drum impeller, be careful not to wet the circuit board and other electrical components.