Hi Guys,
I've seen many precious information in here, but I'm kind of stuck,
The boiler (vaillant turbomax plus ) shows an F22 error few times a day.
The pressure gauge seems to be working well and indicates nominal pressure. (so I don't think it's actually a pressure problem)
No problem in the summer, when CH was off.
It can occurs either when hot water demand or when just on CH.
When heating, all is well, all hot radiators are hot on all there surfaces and the pump seems to be running ok. So I don't think it get stuck because of sludge but who knows.
So my impression are:
either NTCs, would you know if they are dry pocket or not ?
or PCB, I've heard that vaillant updated their PCB cause they were too sensitive to difference in NTCs ?
any other ideas ?
Many thanks for your help.
I've seen many precious information in here, but I'm kind of stuck,
The boiler (vaillant turbomax plus ) shows an F22 error few times a day.
The pressure gauge seems to be working well and indicates nominal pressure. (so I don't think it's actually a pressure problem)
No problem in the summer, when CH was off.
It can occurs either when hot water demand or when just on CH.
When heating, all is well, all hot radiators are hot on all there surfaces and the pump seems to be running ok. So I don't think it get stuck because of sludge but who knows.
So my impression are:
either NTCs, would you know if they are dry pocket or not ?
or PCB, I've heard that vaillant updated their PCB cause they were too sensitive to difference in NTCs ?
any other ideas ?
Many thanks for your help.
