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how do I rectify the fault as detailed below?
Vaillant vcw gb242 eh central heating problem?
Vaillant condensing boiler ecoTEC plus?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
Vaillant F22 fault?
Vaillant ecotec 831 plus?
Vaillant 828E - no hot water?
Vaillant eco plus 531 boiler?
how to fix water pressure its down at bottom of grey part?
Problem with the pressure in combi boiler?
Vailliant turbo max plus 824e?
Advice?