If the motor still running, the motor should be fine. $ a4 ~+ ^. A. V; b- w. K5 A3 sPossible reason:! ?/ n! Y P& m& M4 h
Flame sensor, up limit sensor or the pressure differential sensor.* \6 M3 E3 b/ }+ j( U' r
Open the control box, there maybe there is one light flashing tell you what's the promble.