Low
d.05 on Vaillant Home System

Your boiler is simply displaying the target temperature it is currently trying to reach for your heating, which is a normal status message rather than an actual fault.

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

Determined heating flow set target temperature: Current value

DIY fix possible

Press the 'Back' or 'Menu' button to return to the main displayCheck that your external thermostat is calling for heat if you want the temperature to increaseNo action is required as this is an information code, not an error

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Related fault codes

d.00View →d.09View →S.04View →

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