BoilerFaultCodesRemeha E37 Fault Code
The Remeha E37 fault code means: your boiler's internal computer has lost its connection with the main control panel, meaning the system can't send or receive the signals needed to heat your home.. It appears on 7 Remeha models in our database.
Technical description: Communication error with control unit
What causes the Remeha E37 fault?
This fault occurs when the boiler's internal electronic brain loses its ability to talk to the control panel or the main sensors. It is usually caused by a loose connection in the internal wiring or a critical component failure on the main circuit board. Over time, heat and vibration inside the unit can dry out solder joints or cause plugs to become slightly unseated, breaking the communication loop.
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 E37 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha E37 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