Hi
I have a National Rice Cooker Model SR-GE18N, Last week , the displace show (H3),and all function stop, seems have some code to lock all functon, I worder any body have the same problem or any solution.
Thanks

Try some of this from Google:
SR-GE18N - Google Search (http://www.google.com/search?hl=en&q=SR-GE18N&btnG=Google+Search)
Several links direct you to service manuals.