There is a device attached to the heater that 'blows' if it over heats ... yours is blown ... as such, the heater will not come on and the water will not heat/perk. You might be able to repair this if you can fid the parts in your community. Check at Johnstone Supply or Radion Shack if these are in your area.

You can find the device by opening the bottom of the maker. Test it on the contunity setting of a volt/ohm meter. If the piece is welded onto the heater as many are, make sure to leave enough wire to attach the new part. Use a crimp tool to attach, not a wire nut.