If the motor still running, the motor should be fine. 7 @, y* m" ^( P2 G: HPossible reason:4 M$ v5 |% n( X/ T' L6 k D2 U) }
Flame sensor, up limit sensor or the pressure differential sensor. + z+ @- u$ `1 P; C% o0 y6 W" _Open the control box, there maybe there is one light flashing tell you what's the promble.