Low Information
S.14 on Vaillant ecoTEC exclusive

Your boiler is currently operating normally and is in the process of burning gas to provide heating or hot water.

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

Live Monitor status check for heat requirement/combustion

What causes this fault?

This code appears when the boiler's internal burner has successfully ignited and is currently generating heat for your radiators or hot water. It is not a fault, but rather a status message indicating that the system is working exactly as intended. You will see this whenever the thermostat or a hot tap calls for energy.

DIY fix possible

No action is required as this is an advisory status code, not a fault.Check your room thermostat or app to confirm your heating is set to the desired temperature.Observe the display to see if the code changes as the boiler completes its cycle.

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