E-6 ‐‐‐‐(Ventilation)

Failure Check / Laser Clean Heater (Unvented)

「Meaning of display」

  • The fire was automatically extinguished to prevent danger from incomplete combustion due to insufficient air supply to the burner (combustion section) caused by poor ventilation, poor maintenance, or other abnormalities. (Incomplete combustion prevention device activated)


  • Clean the combustion air intake (air supply filter), open windows and doors to ventilate the room sufficiently, and then relight the burner. Be sure to ventilate the room once or twice an hour during use.