Suburban gas furnace question
I have "install directions" and "user information manual" for what came with RV. Model (take your pick of which one?) sf-20fq, sf-25fq, sf-30fq, sf35fq and sf-42fq. Here is where I'm at and problem(...
Forum Discussion
dougrainer wrote:
1. You probably have the SF FQ series which requires COMPLETE removal for any troubleshooting or repair on the work Bench.
2. IF it heats for that 8 minutes, then the odds are
A. Hi Limit switch has tripped and possibly defective
B. Hi Limit has tripped due to restriction in the output heat ducts causing excess burner heat build up. If the unit has been working in the past, then possible Rodent Nest obstruction in some of the duct hoses/ductwork.
3. By bench testing, that can rule out hi limit switch. Doug
Thanks, Guess I'll be reading up on above link even to get the thing out of RV. Hope I don't have to wonder around town gathering fittings to work on this thing on the bench. We'll see.
Thanks again.
