E020
Ambrogio
Blade RPM Sensor / Hall Sensor Fault
Robot displays E020 and stops, blade speed sensor error (on models with RPM feedback)
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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
RPM sensor misaligned, Magnet missing from blade disc, Sensor cable damaged, Faulty RPM sensor
How to Fix / Troubleshooting
Safety first: Turn OFF the robot, remove fuse if present, and wear gloves before working near the blade.
- Inspect blade disc: Look for a small magnet or metal target on the blade disc used for RPM sensing. Ensure it is present and firmly attached.
- Clean sensor area: Remove grass and dirt from around the RPM sensor and disc.
- Check sensor mount: Verify that the RPM sensor is securely mounted at the correct distance from the magnet (usually a few millimeters).
- Inspect wiring: Follow the sensor cable to the main board and ensure the connector is secure.
- If E020 persists: Replace the blade RPM sensor with an Ambrogio-compatible part.
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Repair Difficulty
Hard
4/5
Required Part
Blade RPM Sensor
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