If the motor still running, the motor should be fine. % `/ J4 t. h( s; z* KPossible reason: ! _6 O# \, F) e" ^Flame sensor, up limit sensor or the pressure differential sensor. 4 W q- w3 K+ W; {3 O, N& n1 WOpen the control box, there maybe there is one light flashing tell you what's the promble.