Viessmann F6 error

[tonekav]

Hello,

I have Viessmann Vitopend 100 for about 5 years, but in last 2 years I have a lot of problems - I've got nasty F6 error and everything get blocked. It happened randomly, could be 2-3 times per day or once per week.
To resolve the problem Viessmann technicians replace a lot of parts, but unfortunatelly problem is still not resolved. Looks like they just can't find a real reason for this problem.

If anyone had experience what could be a problem I would really appriciate any help.

Thank you,
Tone.

 

[tom848]

Hello.
I have the same problem. What kind of parts they are replaced. Gas pressure switch? I asked, because the Viessmann technicians said probably gas pressure switch is broken down.
Have you fixed yours vitopend?