If the motor still running, the motor should be fine. 7 r' k& T3 p( o* S# A1 e; VPossible reason: 0 ^# q( j9 y9 d9 X3 y/ c$ ~0 OFlame sensor, up limit sensor or the pressure differential sensor./ Y! |! o' k7 W2 r _: G o5 R
Open the control box, there maybe there is one light flashing tell you what's the promble.