Low
A CO on Vokera Verve

Your boiler has been accidentally switched into a specific testing mode used by engineers to check exhaust fumes, and it is not currently operating in normal heating mode.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Combustion analysis test

From this model's manual
Verified against the Vokera Verve installation & service manual, page 6.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Locate the chimney sweep or manual test button on the control panelPress or toggle this button to exit the combustion analysis modeTurn the boiler off at the mains for 60 seconds and then switch it back on to reset the system

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