After several investigations in Huaca del Sol (Uhle 1915; Hastings and Moseley 1975, Moseley 1975; Pozorski 1979 Narro Gallardo and 1992, Herrera and Ramirez 1992; Herrera and Chauchat 2003), the archaeological project Huacas de Moche (Moche Temples) initiated a research program that began in 2011. In this article, we present the excavations results in section 2 of Huaca del Sol from the systemic approach by Niklas Luhmann, which helped us to conceptualize and define our procedure to the particular demarcated issues. The conclusions, we present, show in first place, a long building autopoietic process, which has defined a three-phase construction sequence (last, penultimate and antepenultimate. The penultimate phase consists of two sub phases, which would indicate a complex building functionality associated at the beginning to domestic-residential activities and then to palace activities...