I use a mod https://mods.factorio.com/mod/Load-Furn-2 that offers two options for producing level 3 furnaces, directly from basic components (red chips, bricks, etc.) or from second level furnaces, with the addition of missing components. Unfortunately, the combinator does not see the second version of the recipe and does not allow you to install it. I would like to check the presence of second-level stoves in the storage facility, and, if they are there, convert them into the 3rd level. If they are not there, make a 3rd level oven from the basic components.