E481 displayed; unit may not respond to remote.

Safety warning: Disconnect power before removing the front panel.

• Step 1 – Check remote: Replace remote batteries and verify the remote works with another Samsung AC if available.
• Step 2 – Remove obstructions: Ensure nothing is blocking the IR receiver window on the indoor unit.
• Step 3 – Inspect receiver board: With the front panel removed, locate the small IR receiver PCB and ensure its connector is firmly attached to the main PCB.
• Step 4 – Test with wired controller (if available): If a wired controller works but the remote does not, the IR receiver board is likely faulty.
• Step 5 – Replace receiver: Replace the IR receiver board with a Samsung-compatible part if damaged.