Low
D.047 on Vaillant ecoTEC Pro 28

Your boiler is simply displaying the current temperature reading from an external weather sensor and is not indicating a fault with your heating system.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

Current outside temperature

From this model's manual
Verified against the Vaillant Ecotec Pro installation & service manual, page 43.
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

Check your boiler display manual to confirm this is a standard status code and not a warning symbolPress the 'i' button on the boiler control panel to toggle the display back to the standard status modeNo action is required as this is a normal operating information message

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Related fault codes

D.046View →D.048View →

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