E19
Hecht
Blade Motor Speed Sensor Fault
Robot mower displays E19; may be associated with blade speed or RPM error.
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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 blade motor hall sensor, Damaged sensor cable, Debris on speed sensor magnet, Main board RPM detection failure
How to Fix / Troubleshooting
Safety first: Turn OFF the main power and wait for blades to stop completely before flipping the mower.
- Clean blade hub: Inspect the blade disc hub for metal filings, rust, or debris around the magnet or sensor area. Clean carefully.
- Check blade disc: Ensure the disc is firmly attached and not wobbling, which can confuse the sensor.
- Test run: Start a short mow and listen for irregular blade speed or pulsing.
- Inspect wiring (advanced): Check the blade motor sensor cable from the motor to the Main Control Board for damage.
- Replace component: If cleaning and wiring checks do not help, replace the Blade Motor Assembly (including speed sensor). If E19 persists, the main board RPM circuit may be defective.
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Repair Difficulty
Hard
4/5
Required Part
Blade Motor Assembly
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