Please follow these steps to check: Step 1: Please check if the trash bag is full and replace it as soon as possible; Step 2: If a new trash bag has been replaced, please take out the trash bag and check whether there is still a prompt; if there is no prompt that the waste bin is full, it may be that the trash bag has not been smoothed out and triggered a false alarm from the sensor. Please smooth out the trash bag before loading it. Step 3: If it still prompts that the waste bin is full, please pull out the waste bin, wipe the dirt on the sensor at the bottom with a clean paper towel. After checking all the solutions, if it also failed, please contact us via support@neakasa.com with the below information: ①Order number ②Photo or Video that shows the problem ③Registered email address.