Remote control does not operate the indoor unit

Safety: No special hazards, but avoid opening the indoor unit with power on.

• Replace batteries: Fit new, high-quality batteries in the remote, observing polarity.
• Check IR path: Ensure there is a clear line of sight between the remote and the indoor unit's receiver window.
• Test remote: Point the remote at a smartphone camera and press a button; you should see the IR LED flash on the screen. If not, the remote is faulty.
• Check receiver: If the remote works but the unit does not respond, the IR receiver board or indoor PCB may be faulty. Replace the AEG IR receiver module first, then PCB if needed.