Napoleon Gas Fireplace: White or grey film on glass, logs or firebox
White or grey film on glass, logs or firebox on a Napoleon gas fireplace: A white/grey haze builds up on the glass and inside surfaces. This is sulphur from the fuel depositing on the surfaces.
Applies to: Napoleon GD70 STARfire direct-vent fireplace (GD70NT-S natural gas, GD70PT-S propane)
Common causes of white or grey film on glass, logs or firebox
- Sulphur in the gas depositing on glass, logs and firebox surfaces
How to fix white or grey film on glass, logs or firebox: step by step
- Let the unit cool fully - never clean the glass while it is hot.
- Clean the glass with a cleaner made for gas fireplace glass.
- Tell the owner to clean the glass regularly; deposits left too long can permanently mark the glass.
If the unit shows an error code, look it up: Napoleon Gas Fireplace codes
Models
Source: Napoleon GD70NT-S / GD70PT-S Installation & Operating Instructions W415-0434, Troubleshooting table, p.25. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.