Mammotion
Boundary Detection Weak / Miscalibrated
Robot mower occasionally runs beyond the boundary wire and leaves the lawn area
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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
Boundary wire buried too deep, Low boundary signal strength from station, Faulty boundary sensor coil in mower, Strong external electromagnetic fields
How to Fix / Troubleshooting
Safety: Turn OFF the mower and unplug the station before adjusting the boundary.
- Wire depth: Ensure the boundary wire is at the recommended depth or on the surface, not buried too deep.
- Station check: Confirm the charging station boundary LED indicates normal loop strength.
- Reduce external fields: Move the boundary wire away from large metal objects or underground cables.
- If the mower still crosses the wire, the internal boundary sensor coil or associated circuitry may be failing and require service.
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Repair Difficulty
Hard
4/5
Required Part
Boundary Sensor Coil
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