Furnace Short Cycles Off and On
I have a Suburban SF30fq furnace that cycles the heater flame off and on about every three minutes while the coach is reaching the thermostat setting (technically called short cycling on the limit swi...
Forum Discussion
I've held meter probes on the limit switch and it is shutting on and off. Haven't yet looked at combustion area but there is no soot in the exterior exhaust. It does seem heat exchange is not keeping up. The blower fan runs steady but I wonder if it's at specified rpm's? It seems unlikely that it would run well but not at proper speed. However, the blower on this rig is much quieter than my preview trailer. I bought my 2012 Cougar 6 months ago so have no prior experience with it.
