The code for Dish is 1313.
If this does not work, the issue may be that the Dish SB is set to RF
(radio Frequency) and needs to be changed to IR (Infra-red).
This process can be different depending on your Dish STB so please refer to your Dish manual by clicking HERE.
However, in general:
Use your Dish Remote, press Menu, then look for settings or preferences, or remote set up, and follow the instructions.