E18
Yarbo
Overtemperature Protection Triggered
Robot mower displays E18 and stops; message may indicate internal temperature too high.
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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
Blocked cooling vents, Operating in direct sun at high ambient temperature, Failing internal cooling fan (if equipped)
How to Fix / Troubleshooting
Safety: Do not operate the mower if it feels excessively hot to the touch.
- Move to shade: Bring the mower to a shaded, cool area and allow it to cool for at least 30 minutes with power OFF.
- Clean vents: Inspect and clean all ventilation openings on the mower body using a soft brush or compressed air to remove dust and grass.
- Check fan operation: On models with an internal cooling fan, listen for fan operation when the mower is powered ON. If the fan does not run, it may be faulty.
- Adjust schedule: Reschedule mowing to cooler times of day (early morning or evening) to reduce thermal load.
Repeated E18 errors in normal temperatures may indicate a failed Yarbo Internal Cooling Fan or temperature sensor on the main board.
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Repair Difficulty
Medium
3/5
Required Part
Yarbo Internal Cooling Fan
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