If the motor still running, the motor should be fine. 7 {% Z* y6 G( C5 u3 q4 q3 J( G) p0 WPossible reason:7 }* B, q! x$ E$ V
Flame sensor, up limit sensor or the pressure differential sensor.4 h) x* @: Z Y4 x* e. @. N
Open the control box, there maybe there is one light flashing tell you what's the promble.