Hi
I had the same problem and have just gone to the timer maker website - my timer was made by Grasslin and their link is following. Follow their links on te left hand side of screen and then go to electronic time controlls - they show pictures too so you should be able to pick out yours. My one is int he link I am attaching and if yours is not the same then just go to home. Good luck in your search and let me know how you get on, here's hoping to a happy warm winter.
Adele
http://www.intermatic.com/Default.asp?action=subcat&sid=406&cid=122&did=44
Adele, October 2007
