Vaillant 0020173978 Display PCB GC No: 41-694-17.

Vaillant 0020173978 Display PCB GC No: 41-694-17. From Vaillant ecoTec Plus 430 VUW 306/6-5 OVZ. All our parts are stripped from brand new unused boilers, what you see with the part is what you get. Bargain Buy it NOW for only £25.00.