If the motor still running, the motor should be fine.' F0 O$ B6 r" l$ [* H& Y
Possible reason:( ^5 u7 N6 A) v# |2 c! J
Flame sensor, up limit sensor or the pressure differential sensor. / y- c s1 L3 {Open the control box, there maybe there is one light flashing tell you what's the promble.