Low
d.01 on Vaillant ecoTEC plus System

Your boiler is currently running its internal pump to circulate residual heat, which is a normal part of the system's cooling process.

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

Pump overrun in heating mode: 1 to 60 min. Default: 5

Engineer required

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

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Related fault codes

d.00View →d.02View →

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