My furnce is cycling 5-6 times an hour and the house still feels cold , Brand new filter so that is not the problem . Here is what I have noticed during the cycles . The thermostat (digital) starts the draft motor , glow plug lights the burner and stays lit for approx 3 mins , just before the burner and draft motor turns off the blower starts to circulate air through the ducts . The blower runs for 30-60 seconds and shuts off . Shouldn't the blower run longer with the pilot on to blow hot air through the ducts ? . Everything seems to be working but the timing of the burner being lit/fan motor running seems to be to short . Could this be a thermostat problem ? . Lived here over ten years with no prior probs .
Thanks for any responses .