- 1). Wait at least 15 minutes until the oven has fully cooled. Proceed to Step 2 if the oven hasn't recently been used.
- 2). Fill the spray bottle with undiluted white vinegar.
- 3). Open the convection oven's glass door.
- 4). Spray the vinegar onto the glass on the inside of the door. Leave the liquid on the glass for about 10 minutes.
- 5). Wipe the oven glass thoroughly with crumpled-up pieces of newspaper. The newspaper prevents streaks from appearing on the glass. Continue wiping until the glass is clean and dry.
- 6). Close the oven door. Repeat Steps 4 and 5 to clean the outside of the glass door.
Source...