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We have 57 questions about mending 'vaillant 242 hot water'
Vaillant 828E - no hot water?
how do I rectify the fault as detailed below?
how to fix water pressure its down at bottom of grey part?
Vaillant ecotec 831 plus?
Vaillant eco plus 531 boiler?
Vaillant condensing boiler ecoTEC plus?
Boiler over pressure on the hot-water side?
Vaillant F22 fault?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?