how do I rectify the fault as detailed below?
vaillant ecoTEC plus boiler fault code - how to fix?
Water dripping from opening at top of pump?
Hot water supply?
Vaillant igniting issue ( domestic ) not CH?
Vaillant ecomax 828/2 e water pressure sensor?
Vaillant F22 fault?
Vaillant 828E - no hot water?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
Vaillant ecotec plus 630?
No hot water, intermittent when air temp drops?
my vaillant boiler is saying a code com on it ?