Low
S.28 on Vaillant Turbomax Plus VUW 242E

Your boiler is perfectly fine; this isn't a fault but a protective waiting period designed to prevent the system from turning on and off too frequently.

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

Anti cycling mode (warm start)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

S.27View →S.32View →

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