E9
Sommer
Non‑Volatile Memory Error
Sommer opener shows E9 and will not accept new programming or operate normally.
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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
Corrupted EEPROM/flash memory on control board, Interrupted power during programming, Aging electronics on older Sommer units
How to Fix / Troubleshooting
Safety: Disconnect power before handling the opener housing.
- 1. Full reset attempt: Follow the Sommer manual to perform a factory reset (often involves holding the PROGRAM button for an extended period until all LEDs cycle). This clears stored limits and remotes.
- 2. Re‑program from scratch: After reset, set travel limits and program one remote. Test operation.
- 3. Stable power: Plug the opener into a known‑good outlet or use a surge‑protected circuit to avoid brownouts during programming.
- 4. If E9 returns: The memory section of the control board is failing. Replace the control board with the correct Sommer part number for your model.
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Repair Difficulty
Hard
4/5
Required Part
Sommer Control Board
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