failure mode
Roomba i2 Dual Mode Virtual Wall ignored; robot crosses barrier
Symptom: The robot drives through a doorway or into a zone the Dual Mode Virtual Wall is supposed to block, or the barrier seems to do nothing. (The i2 has no in-app Keep Out Zones — a Virtual Wall or a closed door is the only way to block an area.) Likely root causes: Weak or dead AA batteries in the Virtual Wall (most common); Virtual Wall switched off, or set to the wrong mode (Linear vs Halo); Barrier placed poorly — beam not spanning the gap, or robot starting inside the zone; Emitter window dirty or obstructed; beam blocked by furniture; Robot's IR receiver on top of the bumper dirty; Barrier too far from the opening (out of range) Next steps if owner-level checks fail: Robot still crosses with fresh batteries, correct mode and good placement — the Virtual Wall emitter or the robot's IR receiver may be faulty; test with a second barrier if available, then contact iRobot Customer Care 1-877-855-8593