Low
S.05 on Vaillant Turbomax Plus 828

Your boiler is temporarily cooling itself down after use and should return to normal operation shortly.

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

Fan and pump over run (837/637 only)

DIY fix possible

Wait for 5 to 10 minutes for the cooling cycle to completeEnsure your radiator valves are open to allow heat to dissipateIf the code persists for hours, try resetting the boiler

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Related fault codes

S.00View →S.07View →S.08View →

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