BoilerFaultCodesWarmhaus E05 Fault Code
The Warmhaus E05 fault code means: your boiler has lost its connection to the sensor that monitors the heating temperature, causing the system to stop running to prevent damage.. It appears on 1 Warmhaus model in our database.
Technical description: Temperature sensor from radiator error – electronic card detecting a failure.
What causes the Warmhaus E05 fault?
This fault occurs when the boiler's main internal computer loses communication with the sensor that monitors the temperature of the water sent to your radiators. The most common reason is a simple failure of the sensor's internal components or a loose connection in the wiring that links the sensor to the control board. Without an accurate temperature reading, the boiler shuts down as a safety precaution to prevent the system from overheating.
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 E05 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Warmhaus E05 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