Low
S.27 on Vaillant ecoTEC plus Aquaplus

Your boiler is currently moving hot water around its internal tank to make sure your hot water supply is ready for use, which is a normal part of the system's operation.

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 over run (store charging)

Engineer required

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

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Related fault codes

S.20View →S.28View →

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