If the motor still running, the motor should be fine.* _/ O* j8 [, t1 G2 S8 `. j
Possible reason:( ~# g& x" c( u1 r! j/ Y4 D" @5 v- r
Flame sensor, up limit sensor or the pressure differential sensor.* u/ U, w6 s& [4 @- l+ ^# h
Open the control box, there maybe there is one light flashing tell you what's the promble.