Hisense air conditioner remote control does not operate the unit.

Safety first: No internal high-voltage work is required for basic remote troubleshooting.

• Step 1 – Replace batteries:
  • Install new, high-quality batteries in the remote, observing polarity.
• Step 2 – Check IR path:
  • Ensure there is a clear line of sight between the remote and the indoor unit.
  • Clean the IR window on the indoor unit with a soft cloth.
• Step 3 – Test remote:
  • Point the remote at a smartphone camera; pressing buttons should show a flashing light on the camera screen (indicates IR output).
• Step 4 – Check unit response:
  • If the remote works but the unit does not respond, the IR receiver board or indoor PCB may be faulty.
• Step 5 – Replace parts as needed:
  • Replace the remote control first (easy and inexpensive).
  • If still no response, have a technician replace the IR receiver board or indoor PCB.