I believe that glowing orange-red is not necessarily an indication of the catalytic combustor working. This is from both WS and Tim Cork of Fire Cat Combustors (the manufacturer of the cat in the Fireview). In fact, according to Tim Cork's blog, the bulk of the cat's work is done while it is not glowing at all. http://firecatcombustors.blogspot.com/2009/10/understanding-catalytic-combustor-in_28.html Good point about the bypass handle. When I first starting using my FV, I did not fully engage the combustor bypass handle. I then realized that it has to be pulled up enough firmly and then heard the "click".