Low
S.07 on Vaillant Turbomax Plus VUW 242EH

Your boiler is simply performing a routine safety cycle where it keeps the pump running for a short time to move leftover heat away from the system, and this is completely normal behavior.

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

Pump over run (heating operation)

From this model's manual
Verified against the Vaillant Turbomax Plus 824 828e installation & service manual, page 38.
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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