Taken from a Working Vaillant Ecotec Plus 831. ECOTEC PLUS 612 VU126/3-5, 126/3-5R1 – 41-044-44. ECOTEC PLUS 612, 615, 618, 624, 630, 637 –. ECOTEC PLUS 824 VUW 246/3-5 VUW 246/3-5 R1 – 47-044-31. ECOTEC PLUS 615 VU156/3-5, 156/3-5R1 – 41-044-45.
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