BoilerFaultCodesRemeha 17 Fault Code
The Remeha 17 fault code means: your boiler's main internal computer has developed a serious fault and is no longer able to manage the heating process safely.. It appears on 2 Remeha models in our database.
Technical description: Control box failure
What causes the Remeha 17 fault?
This fault occurs when the boiler's central control board suffers a hardware failure and can no longer process data or send signals to other components. The most common reasons for this are electrical surges, moisture ingress, or simply the natural degradation of the solder joints and capacitors over time as the unit ages.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Remeha models that show the 17 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha 17 fault code information on this page is sourced and cross-checked against the official Remeha service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026