Low Information
F9 to F0 on Glow-worm Xtramax HE

Your boiler is displaying its recent history of errors to help a technician understand what has gone wrong in the past.

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.

Technical description

Fault history (scrolls through the last 10 faults recorded)

What causes this fault?

This code is not a specific mechanical failure, but rather a diagnostic mode that displays the boiler's memory of recent issues. It occurs when a technician accesses the internal settings to see a log of the last ten errors the system encountered. By showing these historical codes, the boiler helps the engineer pinpoint recurring patterns or past problems that might be related to the current fault.

DIY fix possible

Press the 'Reset' button to return the boiler to its normal operating modeObserve if a specific fault code reappears after the resetNote down the most recent codes to tell an engineer if the boiler stops working again

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Related fault codes

F1View →F2View →F3View →F4View →

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