Try unplugging it from the wall for a minute and then plug it back in and try it.
If you still have trouble, I would need a little more information.
Are you saying that the keypad is unresponsive?
Or that you can program it, but it won't start when you hit the "Start" key?
Feel free to contact me for more help.
Ed Miller
[email protected] http://www.MicrowaveControl.com