E15 appears; charger does not energize; often after configuration changes.

Note: Many configuration errors can be resolved via the user interface without opening the unit.

• Factory reset: Use the front panel or GoCable app to perform a factory reset of settings. Consult the manual for the exact procedure.
• Re‑enter installation parameters: Set the correct supply type (single/three‑phase if applicable), maximum circuit current, and region/grid code.
• Update firmware: Install the latest firmware, which may repair corrupted configuration structures.
• Power cycle: Turn off the breaker for 1 minute, then restore power and verify if E15 clears.
• If E15 persists after reset and update: The configuration memory (EEPROM/flash) on the main control board may be defective and require board replacement.