Answer Hello Marie, Usually that would indicate that the timer is bad unless it's doing it in a cycle where the timer should stall and heat the water. We would really need the complete model # in order to give a better answer. After the GSD500 there should be a letter and than a few more digits. If you can provide that we'll try to give a more definitive answer. Thanks. Read More... Answered by AppliancePartsPros.com | Thursday, December 13, 2012