Here are possible causes and corresponding solutions:
• The vacuum is in-process of a maintenance task → The vacuum cannot be charged while refilling water, self-cleaning, or drying. The vacuum will automatically start charging after completing the maintenance task.
• The base station is not plugged in → Plug the original power cord into a secure power outlet to charge the base station.
• The power cord is not the original one provided with the product → Use the original power cord provided with your product.
• The vacuum is not properly placed on the base station → After putting the vacuum back in the base station, check the vacuum's position to make sure it is placed correctly.