Low
D.80 on Vaillant Combi Compact 282EB

Your boiler is simply displaying how many hours it has spent providing central heating; this is an information status rather than a fault.

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

Operating hours heating

DIY fix possible

Press the 'i' button to exit the information menuMonitor the display to see if it returns to a standard temperature readingNo further action is required as this is a normal status message

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