E12
TerraMow
User Interface / Keypad Communication Error
Display shows E12; mower may not respond to keypad or app commands.
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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
Damaged keypad ribbon cable, Corroded keypad connector, Faulty display/keypad PCB, Water ingress in control panel
How to Fix / Troubleshooting
Safety: Turn OFF the mower and disconnect the battery before opening the control panel.
- Check for moisture: Inspect the display and keypad area for condensation or water marks. Dry gently with a soft cloth.
- Inspect ribbon cable: Open the top cover to access the keypad ribbon cable. Ensure it is fully inserted into the connector on the main board and not torn.
- Clean connectors: If corrosion is visible, lightly clean the contacts with electronics-safe contact cleaner and allow to dry completely.
- Test operation: Reassemble and power ON. If the display remains unresponsive or E12 persists, the keypad/display PCB is likely defective.
- Replace if needed: Install a new TerraMow display and keypad assembly.
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Repair Difficulty
Hard
4/5
Required Part
TerraMow Display & Keypad Assembly
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