good morning i hope that all is well, so i have an issue we just b ought this house and the heater worked for the spa and pool but suddenly the heater stopped working ARGH!!!! so the cycle starts i can hear the ignitor and the fan is blowing but the heater will not fire,i have pulled the cover and there are no error codes on the board, we have had the home warranty company out and they stated that the flue sensor is the issue that also caused the board to short out? so we have purchased a new flue sensor and a control board.really need some help here my kids are bummed that they cant swim in a warm pool.. Please please help us out