Goods Scene Troubleshooting
iRobot Roomba Combo j Series – Error 35 — incompatible mop pad detected
The robot has detected a mop pad that it considers incompatible.
Issue meaning
What this issue means
The robot has detected a mop pad that it considers incompatible.
Start here
First checks
Remove and reinstall the mop pad, confirm it is the correct compatible pad for the robot and is seated correctly, then restart the job.
Inspection
Area to inspect
Mop pad, pad mounting interface and pad-detection area.
Goods Scene guidance
What to do next
If a known-compatible pad is fitted correctly but Error 35 remains, inspect the pad-detection mechanism or actuator area rather than replacing unrelated cleaning parts.
Practical guidance is kept separate from manufacturer wording.