Low
S.88 on Vaillant ecoFIT Pure 412

Your boiler is currently running a self-clearing cycle to remove any trapped air from its internal 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

Product purging active

From this model's manual
Verified against the Vaillant Ecofit Pure 412 installation & service manual, page 29.
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

Wait for the process to complete automatically, which typically takes a few minutes.Ensure your heating and hot water are turned on to allow the system to circulate.If the code persists for more than 30 minutes, switch the boiler off and back on again to reset it.

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