If the motor still running, the motor should be fine.0 I' F: B( x' G$ ?1 q
Possible reason:7 P3 p/ `- W# k' I
Flame sensor, up limit sensor or the pressure differential sensor.2 v4 d# \! Z3 z$ U+ q
Open the control box, there maybe there is one light flashing tell you what's the promble.