my vaillant boiler is saying a code com on it ?
resetting thermostatat?
Water dripping from opening at top of pump?
Vaillant ecotec plus 630?
how do I rectify the fault as detailed below?
how to fix water pressure its down at bottom of grey part?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
Vaillant condensing boiler ecoTEC plus?
vaillant vcw gb 282gh?