BoilerFaultCodesWarmhaus E10 Fault Code
The Warmhaus E10 fault code means: your boiler is struggling to accurately read the temperature of the water returning to it, so it has stopped working to prevent potential damage.. It appears on 1 Warmhaus model in our database.
Technical description: Central heating temperature RETURN sensor faulty
What causes the Warmhaus E10 fault?
This fault occurs when the boiler's control board loses communication with the auxiliary temperature sensor or receives an implausible reading. The most common reason is an electrical failure within the sensor itself, or damaged wiring that prevents the signal from reaching the main computer.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Warmhaus models that show the E10 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Warmhaus E10 fault code information on this page is sourced and cross-checked against the official Warmhaus service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026