High
E080 on Vokera Vision S

Your boiler has detected that the water temperature coming back from your radiators is too different from the temperature leaving the boiler, which has caused it to shut down to prevent damage.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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.

What the manual says

Manufacturer manual

return line probe fault, return line probe overtemperature, outlet/return line probe differential alarm

From this model's manual
Verified against the Vokera Vision S installation & service manual, page 8.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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