Remote control does not operate the air conditioner; unit can still be controlled from the panel.

Steps:

• Replace batteries: Install fresh, correctly oriented batteries in the remote.
• Check IR path: Ensure there is a clear line of sight between the remote and the indoor unit's IR 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 may be faulty.
• Clean receiver window: Wipe the IR receiver window on the indoor unit with a soft cloth.
• Receiver board: If the remote works (IR flashes) but the unit does not respond, the IR receiver board or main PCB may need replacement.