Remote control does not operate the air conditioner, but the unit works from the panel.

Steps:

• Replace batteries: Install fresh, correctly oriented batteries in the remote.
• Check line of sight: Ensure there is a clear path between the remote and the unit's IR receiver window.
• 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.
• Inspect IR receiver: Clean the IR window on the unit. If the remote works but the unit does not respond, the IR receiver board may need replacement.