BoilerFaultCodesVokera E080 Fault Code
The Vokera E080 fault code means: your boiler has detected that the water returning from your radiators is too hot or the temperature difference is incorrect, causing the system to shut down for safety.. It appears on 4 Vokera models in our database.
Technical description: Error with return line probe – over temperature outlet or differential alarm
What causes the Vokera E080 fault?
This fault occurs when the internal sensors detect that the water returning from your heating system is significantly hotter than expected or is rising too quickly. The most common reasons are a blockage in the central heating pipes, a failing pump that isn't moving water efficiently, or a sensor that has become faulty and is sending incorrect data to the boiler's computer.
This issue is most frequent during the first cold spell of autumn when heating systems are turned back on after months of inactivity, often revealing stuck pumps or airlocks.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Vokera models that show the E080 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera E080 fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026