If the motor still running, the motor should be fine.4 o: y4 J7 s+ j, U& D0 O
Possible reason:4 _" F$ R- ^1 E: J% ]- A
Flame sensor, up limit sensor or the pressure differential sensor.$ w6 w1 i5 e$ S7 w
Open the control box, there maybe there is one light flashing tell you what's the promble.