If the motor still running, the motor should be fine.; u5 Q# R$ Q% O* D9 {8 d9 x
Possible reason:+ i8 I4 d- o: f& u8 k0 [
Flame sensor, up limit sensor or the pressure differential sensor.( n+ y C. y: Z! g
Open the control box, there maybe there is one light flashing tell you what's the promble.