Low
d.60 on Vaillant ecoFIT Pure 418

Your boiler is temporarily pausing because internal temperature sensors have detected heat rising too quickly, likely due to a circulation issue.

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

Number of blocks by the temperature sensor

From this model's manual
Verified against the Vaillant/Vaillant Ecofit Pure 412 installation & service manual, page 31.
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 that all radiator valves are fully openEnsure there is enough water pressure in the system (typically 1.0 to 1.5 bar)Bleed any air out of your radiators

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Related fault codes

All 129 fault codes on the ecoFIT Pure 418

Seeing a different code? Every code this model can display, in one place.

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