Roomba full-bin light stays on
DIRECT ANSWER
COMMON CAUSES · RANKED
Dust film on the full-bin sensors MOST COMMON
Fine dust on the sensors keeps the light on even with an empty bin — iRobot's docs call this out as the standard cause.
A sensor port got missed
The system spans sensors on the robot plus inner and outer ports on the bin — six spots total. Cleaning five of six leaves the light on.
Stale error waiting for a reboot
Even with everything clean, the indicator can hang around until the robot restarts.
Damaged bin or sensor RARE
Washing a bin with electronics, or a hard drop, can kill the sensor circuit. A replacement bin fixes it.
HOW TO FIX IT
Find all six sensor points
With the bin out, look for the sensor windows inside the robot's bin bay and the ports on the bin's inner and outer walls.
Clean them with melamine foam
Lightly dampened, then dry everything before reassembly.
Reboot to clear the indicator
Reinstall the bin and hold CLEAN until you hear the reboot tone.
Light back next run? Replace the bin
A persistent indicator with spotless sensors means the bin's sensor circuit has failed.
COMPATIBLE PARTS
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Replacement dust bin — i series
Rinse the bin with water only after removing the filter; a cracked latch is the usual reason to replace it.
Check price on Amazon ↗Sources
Corrections
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