Remote control does not operate the unit

Safety first: No high-voltage work is required for basic checks, but unplug the unit before opening the control panel.

• Step 1 – Check remote:
  • Replace batteries with fresh, correct-type cells.
  • Ensure you are within the recommended distance and pointing at the front panel.
• Step 2 – Clean IR window:
  • Wipe the IR receiver window on the unit's front with a soft cloth.
• Step 3 – Test remote output:
  • Use a smartphone camera to view the remote's IR LED while pressing buttons; you should see a flashing light.
  • If no flash, replace the Remote Control Handset.
• Step 4 – Check IR receiver:
  • If the remote works but the unit does not respond, the IR Receiver Module on the control board may be faulty and require board or receiver replacement.