If the MACH V1 vacuum cleaner leaks water during the self-cleaning process, please try the following troubleshooting steps to verify if the issue can be resolved:

Check whether the roller brush cover and the dirty water tank are installed properly. After checking the roller brush cover and the dirty water tank, please place the vacuum cleaner on the charging base and start the self-cleaning process again.

If you have any further questions, please contact us for assistance.