Remote control does not operate the Toshiba air conditioner.

Safety first: No high-voltage work is required for basic checks, but turn off power if removing indoor covers.

• Step 1 – Replace batteries: Install new, high-quality batteries in the remote, observing polarity.
• Step 2 – Check IR transmission: Point the remote at a smartphone camera and press a button; you should see a flashing light on the screen if the remote is transmitting.
• Step 3 – Clear line of sight: Ensure nothing blocks the path between remote and indoor unit’s IR receiver window.
• Step 4 – Try manual button: Use the emergency/manual ON/OFF button on the indoor unit to confirm the unit itself can run.
• Step 5 – Replace remote or IR receiver: If the remote transmits but the unit does not respond, the IR receiver board or indoor PCB may be faulty and require replacement.