A09
Vokera fault code
Vokera A09: flue thermistor fault
Engineer only
Vokera lists A09 as a flue thermistor or flue thermistor counter fault. Flue faults are always a job for an engineer.
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.
- If anyone feels unwell (headache, dizziness, nausea), get fresh air and call 0800 111 999.
Find a Gas Safe engineer near you
Opens the official Gas Safe Register search.
Applies to: Vision and Compact A. Codes can differ between models, so check your manual.