I have a Turbomax Plus 824e Combi Boiler.
When I switch off a cold water tap or the toilet is flushed my boiler ignites and heats for approx 10 seconds. How can I stop this without calling in the Expensive Vaillant man
When I switch off a cold water tap or the toilet is flushed my boiler ignites and heats for approx 10 seconds. How can I stop this without calling in the Expensive Vaillant man