Low
d.47 on Vaillant ecoTEC Pro / ecoTEC Plus

Your boiler is simply displaying the current temperature reading from the outdoor sensor and is operating normally.

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

Outside temperature Actual value in °C

From this model's manual
Verified against the Vaillant Ecotec Combi 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 return to the main status screenCheck your boiler manual for the specific button sequence to exit the information menuObserve if the boiler continues to heat your home and water as expected

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