If the motor still running, the motor should be fine.; X: {6 N& y$ O) _7 d0 i! h# j' s8 V
Possible reason: : a% y( f5 W- o! XFlame sensor, up limit sensor or the pressure differential sensor.7 M; S, ~" F8 Y% @) u2 f
Open the control box, there maybe there is one light flashing tell you what's the promble.