Low
S.05 on Vaillant Turbomax Plus 828 E

Your boiler is currently just finishing a normal cooling cycle, where it pushes heat away from the unit to protect its internal parts after being turned off.

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)

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.00View →S.02View →S.04View →

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