Display shows E14, heater does not respond to temperature adjustments or shows unrealistic setpoints.

Safety: Disconnect power before removing the front panel.

• Dry and clean: If the panel has been exposed to steam or water, gently dry it and clean around the buttons with a soft cloth. Do not use aggressive cleaners.
• Check button travel: Press each button to ensure it moves freely and returns. If any button is stuck, the panel may need replacement.
• Inspect cable: Reseat the connector between the user interface and the main PCB.
• Replace panel: If E14 persists and buttons do not function correctly, replace the complete Termet control panel assembly.