how do I rectify the fault as detailed below?
Vaillant ecomax 828/2 e water pressure sensor?
Vaillant vcw gb242 eh central heating problem?
no heating water?
Water dripping from opening at top of pump?
vaillant ecoTEC plus boiler fault code - how to fix?
Hot water supply?
Vaillant 630 error f 85?
how to fix water pressure its down at bottom of grey part?