How to mend Central Heating Combi Boiler Vaillant

Vailant VCW 242EH, Sticking diverter valve?

Why can't I get hot water in my kitchen?

hot water out of cold water tap?

Vaillant ecomax 828/2 e water pressure sensor?

what is the faultcode f25 on a vailant 824ecotec plus?

438 at low gas rate?

cost of new expansion vessel?

looking for a pump?

No heating but plenty of hot water ?

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How can I fix hammer knock in plumbing?

pressure valves?

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hot water flow problem?

plumbing and heating?

how to replace pressure gauge?

dhw diaphram?

Hot water cools when tap is opened fully?

room thermostats?

heating - plumbing?

no hot water in taps?

diaphram?

vailant 242e turbomax and the temp keeps fluctuating?

what is the faultcode f75 on a vailant 824ecotec plus?

Fixing a vallaint geaser?

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plumbing?