If the motor still running, the motor should be fine. 8 ]! Y* u" e; e+ ^; D- w9 h: G: XPossible reason:" Z, X/ \: D' C0 c1 b6 T, T
Flame sensor, up limit sensor or the pressure differential sensor.1 J( H! g6 @ z. F e: p& T
Open the control box, there maybe there is one light flashing tell you what's the promble.