How to Troubleshoot the Heatilator GNDC33


The Heatilator GNDC33 is a direct vent natural gas fireplace with a top vent and standing pilot with a remote control. The fireplace has a 25,000 BTU per hour input and can be installed in bedrooms and mobile homes. It comes with tempered glass and six ceramic fiber logs and a manual shutoff valve. The fireplace should be professionally installed and is fairly simple to operate, but if problems arise with the fireplace, some troubleshooting may be necessary.

Things You'll Need

  • Non-abrasive glass cleaner
  • Clean cloth(s)
  • Vacuum
  • Soft brush
  • Allow time for the Heatilator fireplace to heat up if condensation appears on the glass, which is usually a result of variations with temperature and gas combustion.

  • Clean the glass within four to six hours of operation if a filmy appearance occurs on the glass surface. Use a non-abrasive glass cleaner and wipe with a clean, soft cloth.

  • Ventilate the area well if the fireplace is emitting an odor during use. If the odor smells like gas, turn the fireplace off, leave the home and contact your gas company for assistance.

  • Wait several minutes for the fireplace to warm up if the pilot light appears blue. This should even out and turn yellow as the appliance continues to burn.

  • Disconnect the fireplace and turn off the gas valve before opening the burner and control compartment if the fireplace is operating noisily. Brush away excess dirt or debris or suction with a vacuum.

  • Contact Heatilator for additional assistance as necessary at 800-843-2848.

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