I have a Williams gravity vented wall furnace, model #: 3509622, serial #: J 094628.
The problem that I am having is that, once I set the thermostat to a specific setting it will turn on, but I can't feel any heat coming from it.
Usually I can feel the heat above the pilot door opener and above, but now I can't feel heat coming out.
Looking at the picture below:
In the RED section, I can feel heat coming from it.
In the YELLOW section, I can't feel the heat at all. It worked fine last year and I've been cleaning it and taking the dust off...
the red section is where youre going to feel the heat initially after its on for awhile you will feel it in the middle section as it gets to operating temp just let it run longer
Usually it will start about 15-25 minutes, but I would leave it on for hours and it does nothing, only the above part only. It sucks when the kids want some heat and they can't feel it because they are short.