How to clean the dirty water tank of H11Max/H11? August 25, 2022 09:36 Related articles Why does H11Max/H11 show the error icons? What are they for? How to solve the problem of no water comes out from the water tank? How to clean the roller brush for H11Max/H11? How to clean the tube of H11Max/H11? How to solve the problem of unable to connect to Wi-Fi ?