I'm not familiar with the unit, but on the face of it it looks like a case of disconnecting wires or simply removing a connector and reconnecting to the replacement unit. The real question is, why has it stopped working? (If indeed, it is the control panel that has stopped working.) Is it possible that there's a cheap and easy fix?
That looks like a Dual-Top controller. Have you checked all the fuses?? It's extremely rare these panels go down!!!!! They are not unique to the unit, so you could even upgrade to the digital display with the 7 day programmable timer.
Mmmm, Think I'll be having words as that's the first I've heard of it!!
Last time I checked, it's a small trim surrounding the display and behind that will be either a 4 or 6 pin connector (nothing too complicated). They don't need coding in as far as I'm aware, so should be a straight swap. However I really would recommend upgrading to the Digital display!!