I know the whole unit needs to be replaced as the unit has 4 screws for side mounting, but I can't see how to access this area. It appears I would have to cut part of the window sill. Any thoughts?
Tom from SWISCO responded:
June 13, 2017
Sure, I have some ideas. Start by watching the video below. The operator featured here is different, but we show the best method of removing a wood sill trim cover.