Front display and buttons work, but the remote control does not operate the unit.

Safety: No internal high-voltage work is required for basic checks, but unplug the unit if removing panels.

• Replace batteries: Install fresh, correctly oriented batteries in the Black+Decker remote.
• Check line of sight: Ensure there is a clear path between the remote and the IR sensor window on the unit's front panel.
• Test remote: Point the remote at a smartphone camera and press buttons; you should see the IR LED flash on the camera screen. If not, the remote may be faulty.
• Inspect IR sensor: Clean the IR sensor window on the unit with a soft cloth. If accessible, check the small IR receiver board behind the window for loose connections.
• Replace parts as needed: Replace the remote control or IR receiver board if they are confirmed faulty.