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    Viessman Vitola 100 / Calora 055 Oil/Gas Broiler Fault 1d1

    Hello, I've recently moved to Germany and I am having problems with my broiler. I have a Viessman Vitola 100 with a Calora 055 control unit. I just filled my oil tanks up and I am recieving a "1d1" fault on the LCD display when I power up the unit. When I power up the unit, I get a green...
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