Mike
I had a new Vitodens 100-W installed 21 September 2018, within 7 days the boiler failed. My installer contacted Viessmann for an engineer call out, this was a Monday the earliest an engineer could respond was the following Friday. He arrived on the Friday found the boiler fan was faulty, this was replaced. The boiler has been operating normally since. I was disappointed that such a high spec boiler would fail so soon! However, the Viessmann engineer was technically competent, he identified the fault quickly.
5 years ago
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