try disconnecting for ten mins then plug back in.
then leave it turned on for a bit see if that will sort it
Please note that code entry is only possible when "CODE" is shown in the display. If the display continually shows four lower bars " _ _ _ _ " then the unit may be codelocked and will need to be left switched on up for up to two hours to reset before another code entry attempt is possible.
hay88
January 2011