BoilerFaultCodesRemeha 41 Fault Code
The Remeha 41 fault code means: your boiler's computer brain has malfunctioned and can no longer control the heating system safely.. It appears on 2 Remeha models in our database.
Technical description: Control box failure
What causes the Remeha 41 fault?
This fault occurs when the internal circuit board, which acts as the boiler's brain, suffers a critical electronic failure or loses its memory. The most common reasons are age-related wear to the electrical components or a power surge that has damaged the delicate circuitry. Because the board can no longer safely monitor the gas valve or sensors, it shuts the system down to prevent an accident.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Remeha models that show the 41 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha 41 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