Low
d.71 on Vaillant ecoFIT pure

Your boiler is notifying you that the temperature of the water going to your radiators has reached its maximum allowed limit.

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

Maximum heating flow set target temperature

DIY fix possible

Check that all radiator valves (TRVs) are fully open to allow water to circulateEnsure the internal bypass valve is not closed if you have oneCheck for any obstructions in the heating system pipework

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Related fault codes

F.20View →F.24View →d.40View →

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