Low
S.07 on Vaillant ecoTEC exclusive

Your boiler is perfectly healthy and is simply circulating water around your radiators after the heating has switched off to ensure the system cools down safely.

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.

What the manual says

Manufacturer manual

Heating mode: Pump overrun

From this model's manual
Verified against the Vaillant Ecotec Exclusive installation & service manual, page 53.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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Avoid the next call-out bill

A cover plan would handle faults like S.07: no call-out fees, no surprise bills.

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