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Hi, this winter I installed 2 different gas atwood waterheaters, and they both had this symptom, The problem is that the control module is bad, and will need to be replaced. As it is new it will be done on warranty. You need to contact an atwood warranty station. Quite honestly, I paid for the new controls in each instance as it takes a week or better for atwood to send the part. wishing you well Michael......please get back to me if you would like to discuss this further