Suburban SF-20 furnace wont stay lit
Over the weekend, I ran the furnace a couple of times. Whenever there was actual combustion, I'd get a pretty good whistling noise. Figured I had some debris in the combustion chamber. Got it h...
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from the outside...look in the upper right corner...you will see 2 1/4" hex screws...loosen and retighten each a few times and retry lighting. This is the point inside that the ground is connected...if this becomes high resistance it will do as you describe....I know from personal experience.
