Ferroli · Optimax 25 S
F2 boiler fault code
Optimax 25 S
Get a Gas Safe engineer
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Renting? Report it to your landlord or housing provider first. They are responsible for gas safety and boiler repairs, and the repair should not cost you.
What F2 means
Flame detected while the burner is off.
Safe check
Record the F2 display and model from the outside label. Do not open the boiler or try a reset.
When to contact an engineer
Leave the boiler switched off and contact a Gas Safe registered engineer to investigate this detected-flame fault.
Safety notice
A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, anyone feels unwell, or there is an unsafe flame, leave and call 0800 111 999 from outside.
Source and provenance
- Optimax 25 S · reference 35446965 · code 3544696/5 · troubleshooting table, printed p. 26
instructions for use, installation and maintenance
05/2005 · code 3544696/5