E17
NAC
Inertial Measurement Unit (IMU) / Gyro Fault
Robot lawnmower displays E17 IMU Error; mower cannot maintain straight path and error appears after startup self‑test.
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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
Loose IMU board, Shock damage from dropping the mower, Faulty IMU sensor chip, Damaged IMU ribbon cable
How to Fix / Troubleshooting
Safety first: Turn OFF the mower and remove the battery. Work on a clean, static‑safe surface.
- Inspect mounting: Open the mower housing and locate the IMU board (often a small PCB mounted centrally). Ensure it is firmly screwed down and not loose.
- Check connectors: Reseat any ribbon or plug connectors between the IMU and main board.
- Calibrate (if supported): Some NAC models allow IMU calibration via the settings menu. Place the mower on a perfectly level surface and run the calibration procedure.
- Check for physical damage: Look for signs of impact or cracked PCB. If damaged, the IMU board must be replaced.
Warning: Avoid static discharge when handling internal boards. Use an anti‑static wrist strap if available.
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Repair Difficulty
Hard
4/5
Required Part
IMU / Gyroscope Board
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