Low
S.00 on Vaillant Turbomax Plus 828

Your boiler is currently waiting for a signal from your thermostat or timer to tell it to turn the heating on.

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

No heat demand (heating operation)

DIY fix possible

Check that your room thermostat is turned up higher than the current room temperature.Ensure your programmer or timer is set to an 'ON' period.Replace the batteries in your wireless room thermostat if the screen is blank.

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Related fault codes

S.02View →S.07View →S.08View →

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