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
Mine cycled the burner due to inadequate and poorly installed ducting causing an air flow restriction.
If you have basically bench tested the furnace and it still overheats the firebox I have to speculate internally restricted airflow or the fan/motor is not performing properly. If it is old I would just replace. Check the component warranty if it is not too old.
If you have basically bench tested the furnace and it still overheats the firebox I have to speculate internally restricted airflow or the fan/motor is not performing properly. If it is old I would just replace. Check the component warranty if it is not too old.
