BoilerFaultCodesWhat the manual says
Manufacturer manualBoiler lockout without sparking: check overheat stat. If sparking starts but burner does not light: check gas supply, pressure, or gas valve.
From this model's manual
Verified against the Ferroli/Ferroli Domina 80e installation & service manual.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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All 24 fault codes on the DOMINAplus F28D
Seeing a different code? Every code this model can display, in one place.
4 (Flashing Light)4 (Permanent Light)5 (Flashing Light)5 (Permanent Light)454750E03E05E06Heating demand light ONInsufficient pressureLED 4LED 4 (Flashing light)LED 4 (Permanent light)LED 5LED 5 (Flashing light)LED 5 (Permanent light)LED1LED2Low water pressure light ONRed light (Egg timer symbol)Tap symbol light ON