Err 8
iRobot
Tilt / Orientation Sensor Fault
Vacuum displays “Err 8”; suction may pulse or stop when tilting or lifting the unit.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty accelerometer or tilt sensor on PCB, Loose sensor connector, Firmware miscalibration, Physical shock damage from drops
How to Fix / Troubleshooting
Safety first: Turn the vacuum OFF and remove the battery before any physical inspection.
- Power cycle: Remove the battery for 2–3 minutes, then reinstall and power on. Sometimes this clears sensor glitches.
- Check for drop damage: Inspect the housing for cracks or signs of impact. Severe drops can dislodge internal sensors.
- Update firmware: Connect to the iRobot app and install any available firmware updates, which may recalibrate internal sensors.
- Operate on level surfaces: Test the vacuum on a flat floor without lifting or tilting. If Err 8 still appears, the tilt sensor is likely faulty.
- Board replacement: The tilt sensor is typically integrated into the main PCB; replacement usually means replacing the entire board.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control PCB
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