fan continues to run after burner shutdown - http://www.hvacmechanic.com/ Forums
Original message
| aaronml
 |  "fan continues to run after burner shutdown"
, posted Tue 14 Oct 20:53  
Lennox G20 forced air gas fired system about 10 yrs old. Occasionally, after the burner shuts down the fan will continue to run forever. Only by cutting power at the furnace will it stop. It should shut off about 90 seconds after the burner shuts down, but is adjustable for a longer interval by a jumper. Does this indicate that what Lennox calls the blower control center (BCC) a circuit board, is faulty?
Thanks, Mark
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