In my Bonair Oxygen
trailer I have a Northstar Flameless Sunlite 3000 heater. I tried using it and discovered that it lights
up but stops by itself as soon as I let go of the pilot light
button. The instructions on it say to hold the pilot light
lite for 60 seconds. During this time it looks like cells inside the heater start to glow red. The glow spreads as long as I hold the button pressed in. When I let go the glow goes out gradually over a few seconds. The heat increases and decreases with the glow. What should I do? What kind of maintenance should be done on these heaters?