Error 457 means the dock cannot wet the robot's pad(s). Please see if anything could be physically preventing the dock from providing clean water to the robot.
- Unplug the base and plug it back in, then try again.
- If the error persists, please reboot the robot through the app, or by holding down the power button on the robot for 10 seconds while it is off the dock. Hold the button again for 3 seconds to turn it back on. Doing so should clear the error from the robot's memory.
- Clean the contacts on the robot and dock with a melamine foam.
- Try refilling Roomba® again.
If you performed all troubleshooting steps, but your dock still does not work properly, please contact iRobot Customer Care.
For expedited service, please have the following ready: