Noise during working

1. Check the DWT to make sure it is not full.

2. Check the brushroll cover/DWT/gaskets to make sure it's well installed.

3. Check the DWT/pre-filter/brush chamber/debris channel to make sure it's not blocked

Noise during self-cleaning

1. Check the DWT to make sure it is not full.

2. Check the brushroll cover/DWT/gaskets to make sure it's well installed.

3. Check the DWT/pre-filter/brush chamber/debris channel to make sure it's not blocked.