Warmhaus E10 Fault Code
The Warmhaus E10 fault code means: your boiler has detected a fault with an auxiliary temperature sensor, which means the system cannot accurately monitor the heat levels in certain parts of the unit.. It appears on 1 Warmhaus model in our database.
Technical description: AUX output sensor error
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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Gas Safe Register →Warmhaus models that show the E10 fault code
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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 27 April 2026