viessmann 100

I have a Viessmann Vitodens 100 WB1B without the combi plus. Currently it is throwing an FF error. This happens after 3 tries on its own to start up. It gets through the first few steps, I hear what sounds like an ignition (like when you turn your gas stove on) but it does not hit the step where...

Before I had my new combi boiler and Tado installed I had an older system with a separate water tank. If that old boiler ever had issues I could simply use the immersion heater in the water tank and still have hot water. Now that my new combi boiler has Tado connected, as far as I can see I...