Ideal · Exclusive 2
F4 boiler fault code
Exclusive 2 — models 24 / 30 / 35
Get a Gas Safe engineer
Free. Enter your postcode.
What F4 means
F4 indicates a flow thermistor fault.
Gas Safe engineer: If the message remains or returns after one restart, contact Ideal or arrange a Gas Safe registered engineer.
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.
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.
Safe check
Restart the appliance once using the normal controls.
When to contact an engineer
If the message remains or returns after one restart, contact Ideal or arrange a Gas Safe registered engineer.
Source and provenance
- Exclusive2 User Guide · UIN 220221 A07 (June 2022) · §9 Fault Codes, printed p. 8
user guide
June 2022 · UIN 220221 A07