Remote control does not operate the indoor unit.

Safety first: No high-voltage work is needed for basic checks; unplug the unit only if opening covers.

• Replace batteries: Install fresh, correctly oriented batteries in the SMEG remote.
• Check IR path: Ensure there is a clear line of sight between the remote and the indoor unit; clean the receiver window on the unit.
• Test remote: Point the remote at a smartphone camera; pressing buttons should show a flashing light on the camera screen. If not, the remote may be faulty.
• Check receiver board: If the remote works but the unit does not respond, the IR receiver/display board inside the indoor unit may need replacement.

Most SMEG models also have a manual ON/OFF button under the front panel for emergency operation.