BoilerFaultCodesFerroli 26 Fault Code
The Ferroli 26 fault code means: your boiler is failing to ignite the flame needed to heat your water and home, which is often caused by a blocked gas supply or an internal ignition issue.. It appears on 4 Ferroli models in our database.
Technical description: Boiler failed to light. Make sure that the gas isolation valve on the boiler and on the gas meter are open. Press the RESET button (2 Fig. 1).
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Ferroli models that show the 26 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ferroli 26 fault code information on this page is sourced and cross-checked against the official Ferroli service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026