written by CasonPerry on 25/03/2017
Installed Jan 2008, So called state of the art, Has never completed
one year without fault. Most years plumber called 2 or 3 times.
Reading other reviews I see that we all suffered identical breakdowns and faults so, Viessmann, do not blame the fitters.
Serviced annually only to be followed several weeks later by another breakdown. Was repaired,again, three weeks ago.This morning it has "died" again.Plumber advises " a new motherboard £500!!
The most unreliable,costly item I have ever come accros. Absolute junk. DO NOT BUY.