Put simply, the Vaillant F61 fault code points to a gas valve fault. This means that pressing the reset button on your Vaillant EcoTEC won’t help — you’ll need to book in a Gas Safe engineer to find and fix the fault, as they’re the only people that are qualified to work on gas appliances.
Сколько лимонной кислоты на литр воды от накипи?
Пропорции: 1 столовая ложка соды, 1 столовая ложка лимонной кислоты и стакан уксуса на литр воды.8 нояб. 2020 г.