Robot mower displays E17 and refuses to start; often after firmware update or power surge.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Turn OFF the mower and disconnect it from the charging station before connecting any service cables.
- Power cycle: Turn the main switch OFF for 60 seconds, then ON again and see if E17 clears.
- Attempt firmware recovery: Use the official LawnMaster firmware tool (USB or app-based) to re-flash the firmware following the manufacturer's instructions.
- Avoid interruptions: Ensure the mower battery is adequately charged and do not disconnect power during the update.
If the mower cannot enter update mode or E17 remains after a successful re-flash, the main control board's memory may be damaged and the board will need replacement.
Repair Difficulty
Required Part
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