Low
D.096 on Vaillant ecoTEC Pro

Your boiler has reverted to its original factory configuration, which means your personal settings and heating schedules have been erased.

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

Reset to factory settings?

From this model's manual
Verified against the Vaillant Ecotec Pro installation & service manual, page 44.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Navigate to the boiler's menu settingsManually re-enter your preferred heating and hot water schedulesCheck that your external thermostat or controller settings are still synced correctly

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