vaillant ecoTEC plus boiler fault code - how to fix?
my vaillant boiler is saying a code com on it ?
Vaillant 630 error f 85?
how do I rectify the fault as detailed below?
Water dripping from opening at top of pump?
Vaillant condensing boiler ecoTEC plus?
No hot water, intermittent when air temp drops?
Vaillant ecotec plus 630?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?