Combi fitted, failed the following day. Gas Safe engineer, who fitted it, came out the same day to find that the fault code related to the fan unit. Viessmann engineer arrived the following day and installed a new fan unit, all has been well since then.
Just one of those things, the response time was very good and it has not knocked my confidence in this as a first class quality product.
Oh, and it's "Alan", not "Allen"
4 years ago
Viessmann Limited has a
4.3
average rating
from
1,036
reviews
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