F2
Viessmann fault code
Viessmann F2: burner fault: the temperature limiter has responded
Engineer only
The boiler's overheat safety device (temperature limiter) has tripped and the burner is in a fault state. Viessmann's engineer checks include the system's water level and the circulation pump.
What you can safely do
There is nothing you can safely do yourself with this one. Leave the boiler off and book an engineer.
Call a Gas Safe engineer if
- Book a Gas Safe registered engineer.
Find a Gas Safe engineer near you
Opens the official Gas Safe Register search.
Applies to: Vitodens 100-W (B1HC/B1KC). Codes can differ between models, so check your manual.