1993 Bryant Deluxe Mid-Efficiency Furnace: Electronic Ignitor stays luminated or glowing while heating cycle is done and when temperature has been reached. I've reset(power off/on) the furnace a few times and the ignitor continues to come back glowing. Is this a ignitor on it's way to failure of worse? P.S. I had the unit checked in September and passed without any concern from the local technician.