Managemylife.com is a great place to find the answers to just about anything, especially on appliances. I would suggest that you provide the model # so your expert will be able to provide you the best possible answer. Just click on reply below and the provide the required data.
I'm sorry you are having this problem. Unfortunately, you did not indicate what the thermostat in question is for. For more assistance, please include the complete model and serial number and any additional details will be helpful and I will be glad to assist you further.