Function statements

[cal_stir]

Is there some literature that explains the function statements, ie; fill water, return pump, drain water, filter, water change

[MatthiasF]

Yes,

please take a look at the Programming Manual and Resource Guide from here:

https://www.aquariumcomputer.com/downloads/profilux-4-programming-guide-v7-02/
https://www.aquariumcomputer.com/downloads/profilux-44e-resource-guide/