Low
D.094 on Vaillant ecoTEC plus

Your boiler's history log has been cleared, which is a maintenance action rather than a sign of a physical problem.

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

Deletefaulthistory

From this model's manual
Verified against the Vaillant Ecotec Plus installation & service manual, page 76.
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

No action is required as this is just a status notification.Observe the boiler for 24 hours to ensure it is functioning normally.If no other error codes appear, you can continue using your heating and hot water as normal.

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