When you have inserted the plastic cleaning disc and added the cleaning solution to the tank, be sure to PUSH AND HOLD the brewing button in for several seconds until the unit starts the cleaning cycle before releasing the button. If you just push and release the button, it will not begin the 20 min. cleaning cycle. It will just brew one cup of hot water and the red light will remain on. The light goes off only after going through the entire 20 min cleaning cycle and all the cleaning solution. Also monitor the liquid level in the container you use to catch cleaning solution. The cleaning solution packet makes one quart of fluid, so you will probably have to empty your container midway through the cycle.

Try gently cleaning the bar code reader with a soft damp cloth then gently dry with a soft cloth. I had the same issue when I first bought my T55. I finagled with it for a bit then I tried the cloth trick. Viola' it worked! Good luck I love mine