First off try inputting your code then RESET. Not sure if it will work but to restore factory settings you enter programming mode(engineer mode is factory set to 1234) then press 07 and then PROG. This will as stated reset the whole system which means that the system set up will need to be reprogrammed. The on-line user guide can be downloaded at as a PDF doc at Texecom, http://www.texe.com/downloads.php?page=33
marko
September 2007