We have had some of our boilers fitted with 3 circuit boards already.
The F4 fault is not fixed, contrary to your information. F4 in Viessmann terms can mean almost anything. The original F4 I think you are referring to was a combi/system boiler PCB issue.
At the moment, we have a send me a private mail% fault rate on Viessmann 100s installed over the past 24months, not acceptable at all. We see almost 2% out of Vaillant in a similar period for instance.
And , CroydonCorgi (we are also Croydon Corgis) we have Gas Work Notified (GWN) every job since this became mandatory, it includes every Viessmann.
Viessmann have lost a couple of very high profile council contracts over their 100 series not being as good as they should be. Let's hope they improve.
The F4 fault is not fixed, contrary to your information. F4 in Viessmann terms can mean almost anything. The original F4 I think you are referring to was a combi/system boiler PCB issue.
At the moment, we have a send me a private mail% fault rate on Viessmann 100s installed over the past 24months, not acceptable at all. We see almost 2% out of Vaillant in a similar period for instance.
And , CroydonCorgi (we are also Croydon Corgis) we have Gas Work Notified (GWN) every job since this became mandatory, it includes every Viessmann.
Viessmann have lost a couple of very high profile council contracts over their 100 series not being as good as they should be. Let's hope they improve.
