Jul 5, 2026

Roomba Max 750: Best practices after nearly 9 months

After a long journey to get a mopping robot for our gym (posting) in october 2025 the roomba max 750 started cleaning our gym.

The app is somehow strange and does not work like you except it. So here some tricks to keep the robot running:

  • Error: Robot got stuck
    In the app the robot is marked red and you can not start anything. Cause: the robot does not know where it is.
    • The solution: schedule a routine in 1 minute, to mop another area. Typically then the robot will scan the room and recognize where it is.
    • Because in our gym the robot is cleaning in the night, i have one schedule early in the morning, to vacuum the small room where the dock is. With that in 90% of all fails in the night ("robot got stuck"), the robots finds its way and charges over the day. So no need to drive to the gym and put it in to the dock 
  • Error: Dirty water bin full or other things related to mopping
    • I do not run "vac & mop" anymore. Cleaning the mops sometime does not work (because the robot did not put itself properly in the dock, or some tiny dirt prevents washing the mob) and then the robot will do nothing.
    • But: vacuuming is still possible. So i schedule separately vacuuming in one routine and the mopping in another one. So at least all rooms are vacuumed every night. 

One other observation:

  • If you choose vac + mop then the vacuuming is not running with the same power as in "vac only". So maximum vaccum power is only available, if you do "vac only" which gets much better results.
  • If you robot is doing strange circles: look for spider webs at the LIDAR. After removing them, the robot will go in straight lines again...