Thermostat buttons or touchscreen are unresponsive or register incorrect presses.

Safety first: Disconnect power before removing the thermostat from the wall to avoid short circuits.

Steps to diagnose and fix:

• 1. Reboot the thermostat: Remove power for 30 seconds and restore. Test the buttons or touchscreen again.
• 2. Clean the surface: Wipe the front panel with a soft, slightly damp cloth. Do not use solvents or excessive moisture.
• 3. Check for physical damage: Inspect the glass or plastic front for cracks or warping that could affect touch sensitivity.
• 4. Firmware update: If possible, update the thermostat firmware via the app to correct any known UI bugs.
• 5. Replace thermostat front module: If the UI remains unresponsive and the model allows front-panel replacement, install a new Danfoss front module. Otherwise, replace the entire thermostat.

When to call a professional: For in-warranty devices or if internal damage is suspected, contact Danfoss support.