If the motor still running, the motor should be fine. 3 F5 G: y1 ?3 g% W! p. q7 xPossible reason:6 F7 N6 i# t3 P7 S) Q6 W
Flame sensor, up limit sensor or the pressure differential sensor. / j8 v, ^8 v9 g2 z5 A2 W) yOpen the control box, there maybe there is one light flashing tell you what's the promble.