BoilerFaultCodesFerroli 39 Fault Code
The Ferroli 39 fault code means: your boiler has detected a temporary inconsistency in its operating temperature, so it has paused itself to stay safe and will likely restart automatically once it cools down.. It appears on 1 Ferroli model in our database.
Technical description: Temporary shutdown fault - resets automatically as soon as the value comes back within the boiler’s normal working range
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 39 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ferroli 39 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