Thermador range or cooktop touch controls display Er22 and become unresponsive.

Safety first: Turn off power at the breaker before removing any trim or panels.

• Clean and dry surface: Wipe the touch panel thoroughly with a dry, lint-free cloth. Ensure no moisture or cleaner residue remains.
• Power reset: Turn off the breaker for 5 minutes, then restore power and test.
• Check for physical damage: Inspect the glass for cracks, chips, or areas that appear cloudy or delaminated over the touch keys.
• Internal check (advanced): Remove the control panel to access the touch board. Reseat the connectors between the glass touch assembly and the control board.

If Er22 persists after drying and resetting, the touch glass assembly or user interface board is likely defective and should be replaced as a matched set per Thermador parts guidance.