Sir edwin . . .
Looks like you have a very-very-very-
VERY to the power of 10 . . .special remote that even requires specific (given in the book) entry codes for manners of functions and display languages.
Compare the picture and see if that was your unit . . . . it was at
ADOBE pages 27-52 of the book . . . .
Also, the product even seems to be geographic specific in its distribution, as that model number.
Three other product model numbers also seem to share that same remote.
MANUAL:
http://www.go-gddq.com/down/2011-07/11072807392244.pdf
Remote Photo:
73's de Edd