Vaillant PCB Compatible with the following appliances EcoTec Plus 612, 615, 618, 624, 630, 637 (VU models). EcoTec Plus 824, 831, 837, 937 (VUW/VUI models). EcoTec Pro 24, 28 (VUW models). EcoTec Plus 612 VU 126/3-5 (41-044-44, R1).
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