Low
D.080 on Vaillant ecoTEC Pro 24

This code is simply an information display showing how many hours your boiler has been running for heating, not an error or a fault with your system.

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 operating hours

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

Press the 'i' button on your boiler display to toggle back to the standard pressure readingNo further action is required as this is not a fault

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Avoid the next call-out bill

A cover plan would handle faults like D.080: no call-out fees, no surprise bills.

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