Our fireplace wouldn't ignite, even though the pilot light was on. Charlie, the owner, showed up on time, took one look and began working. I thought the problem was in the toggle switch that turned the fireplace on and off. The pilot light was on. Charlie, however, determined that the pilot assembly was dirty and not delivering the proper current. (That may not be the exact problem, but that's as best as I remember his answer.) But he disassembled the components, cleaned them out, reassembled everything, and voila! The fireplace now worked beautifully. He even washed off the glass doors to the fireplace. We enjoyed being warm and toasty tonight!