E10 High

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.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

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.

Typical repair cost £90-180 (including labour)

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 27 April 2026