E17
Cedrus Magnetic / Obstacle Sensor Interference

Robot mower shows E17 and stops; often when operating near metal objects or buried cables.

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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

Strong magnetic field near boundary, Underground power cables too close, Faulty magnetic sensor module, Incorrect boundary layout around metal structures

How to Fix / Troubleshooting

Safety first: Turn OFF the mower before adjusting the boundary wire layout.

  • Identify interference sources: Note where E17 occurs and check for nearby metal fences, steel covers, or buried electrical lines.
  • Adjust boundary wire: Move the boundary wire further away from suspected interference sources, following Cedrus spacing recommendations.
  • Test in open area: Place the mower in a different part of the lawn away from metal objects and start a test cycle. If E17 disappears, the issue is environmental.
  • Sensor inspection: If E17 appears everywhere, the internal magnetic or obstacle sensor may be faulty. Check its mounting and connector if accessible.
  • Service if persistent: Replace the magnetic sensor module or consult a Cedrus technician for boundary layout optimization.
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Repair Difficulty

Medium 3/5

Required Part

Magnetic Sensor Module
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