BoilerFaultCodesRemeha E17 Fault Code
The Remeha E17 fault code means: your boiler has detected a problem with the sensor that monitors the temperature of the water leaving the unit, causing it to shut down as a safety precaution.. It appears on 5 Remeha models in our database.
Technical description: Flow temperature sensor error
What causes the Remeha E17 fault?
This fault occurs when the boiler's control system receives an incorrect or missing electrical signal from the flow temperature sensor. The most common reason is that the sensor itself has internal electrical failure, or the wiring connecting it to the main control board has become loose or damaged.
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 E17 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha E17 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