Generally, the instructions are shown below: you will have to fiddle around to tweak the instructions since this model Legrand is discontinued, and replaced with the 412641
There are 4 programming buttons located on face of timer: menu, on, +, -
Press menu, use +- to scroll down to GCFEIL, Press on, select language
Press menu, use +- to scroll down to set, press on, set current time and date using same basic commands.
Press menu, use +- to scroll down to program, press on, select new, press on, select day-days of operation for program 1, select individual, set On and OFF times for program 1, save
Press menu, use +- to scroll to function, select auto to run programs.
http://waterheatertimer.org/pdf/legrand-412641-D22-manual.pdf
http://waterheatertimer.org/Din-rail-timers-and-manuals.html
Gene
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