Low
d.71 on Vaillant ecoMAX 828E

Your boiler is limiting the maximum temperature it allows for the water circulating through your radiators to prevent the system from getting too hot.

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

Max. target value for heating-system flow temperature

DIY fix possible

Check the central heating temperature dial or digital setting on the front panelIncrease the maximum flow temperature setting via the user interface if the house is too coldConsult the user manual for instructions on adjusting temperature setpoints

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