Low
S.88 on Vaillant Home System

Your boiler is currently running an automatic program to clear trapped air from the system, which often happens after a restart or maintenance.

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.

Technical description

Product purging active

DIY fix possible

Wait approximately 5 to 10 minutes for the automatic cycle to finishMonitor the display to see if the status changes to a standard temperature or '0' readingEnsure your radiator valves are open to help the air move through the system

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Related fault codes

S.0View →F.22View →

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