BoilerFaultCodesRemeha E16 Fault Code
The Remeha E16 fault code means: your boiler has stopped working because it cannot correctly measure the temperature of the water returning to the unit.. It appears on 8 Remeha models in our database.
Technical description: Return temperature sensor error
What causes the Remeha E16 fault?
This fault occurs when the boiler's internal computer loses communication with the sensor that monitors water coming back from your radiators. The most common reason is that the sensor has electronically failed or developed a loose connection, preventing the boiler from knowing if it is safe to continue heating. Without this data, the system shuts down as a safety precaution to prevent internal overheating.
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 E16 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha E16 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