iRobot Roomba robot vacuum repair

The iRobot Roomba i, j and s lines use built-in cameras and infrared sensors for navigation rather than the LiDAR turret found on many competing models. This system lets the robot recognise rooms and build a map, but it is sensitive to low light and lens contamination. On the Roomba j7+ and j9+ an additional front-facing object-recognition camera helps avoid obstacles on the floor — loss of its calibration means the robot may drive into pet waste or cable tangles.

Our engineers diagnose the camera module, inspect the lens for cleanliness and focus accuracy, analyse sensor data through the iRobot diagnostic mode and, where necessary, replace the camera or sensor board. Cliff sensors frequently become dusty or dirty, causing the robot to refuse to leave the dock — we usually resolve this with thorough cleaning and calibration. Bumper-sensor sticking is another common fault that makes a Roomba drive in circles: we disassemble the bumper, clean the mechanics and replace worn parts. After every sensor repair we run a full test-clean cycle to confirm that navigation works correctly across all zones of the room.

The Clean Base auto-empty dock is one of the key advantages of Roomba i+, j+ and s9+ models: it vacuums dust out of the robot bin immediately after a cleaning cycle. Over time the dock suction motor can wear out or become clogged, producing loud noise without effective suction or stopping entirely. We repair and replace Clean Base motors, clear the air paths and inspect the electrical contacts between the dock and the robot.

Another frequent issue is corrosion or dirt on the robot contact pads, which prevents Clean Base from recognising the robot and starting the emptying cycle. We clean the contacts, check the contact springs and replace the dock power board if needed. For battery issues — if a Roomba dies in 15 minutes or fails to return to the dock — we rebuild the battery with fresh Li-ion cells and a new BMS board, backed by a 6-month warranty.