Welcome! Here are the website rules, as well as some tips for using this forum.
If you are unsure, HW has a great web site that can aid you in your Q?. Usually, unless a safety and not an operating control there is a differential inside which counter and works in conjunction with the control. Since I don't know what you have, who knows. More info would be great.
You can also post in the heating section of "The Wall" to get further information.