boiler programmer problem

On 4 Dec 2006 11:41:30 -0800 someone who may be "Eagleye" wrote this:-

Does it have a battery? If so, has it gone flat and does that prevent it working? If not it is probably broken, electronic ones tend to go like that.

It should be possible to temporarily bypass the programmer by wiring the appropriate wires to a switch, or even an old mechanical time clock in your "might be useful sometime" box. If you don't have a wiring diagram and instructions you should be able to download one from somewhere.