Changing the door open code for a 1083/13, 1083/14 or 1083/19
Enter the code 99999 then when asked for the password enter 1000 and press bell.
Using the up/down arrows, select DOOR OPENER then press bell.
At ENTER press bell.
At DOOR OPENER CODE enter the required code (between 1 and 4999) then press bell.
Press X repeatedly until you get back to the main screen.