POTTERTON PROMAX 12 15 18 24 32 HE PLUS SYSTEM BOILER MAIN PCB 5122458
POTTERTON PROMAX 18 HE PLUS A SYSTEM. POTTERTON PROMAX 18 HE PLUS SYSTEM. POTTERTON PROMAX HE PLUS A SYSTEM. POTTERTON PROMAX SYSTEM 18 ERP (SERIAL NO ENDING AC). POTTERTON PROMAX SYSTEM 18 ERP (SERIAL NO ENDING BC & CC).