Low
d.00 on Vaillant ecoTEC plus Aquaplus

This code is not a fault; it simply indicates that your boiler is currently running at a lower power setting to save energy.

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

Part load setting

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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