If the motor still running, the motor should be fine. , [8 M8 F j; g( x3 u( mPossible reason:! b- l; R# S" k. s( z8 U
Flame sensor, up limit sensor or the pressure differential sensor.6 b4 x% k9 X8 G4 @% w
Open the control box, there maybe there is one light flashing tell you what's the promble.