Low
S.30 on Vaillant Combi Compact 282EB

Your wall thermostat has told the boiler to stay off, likely because the room is already warm enough or the thermostat timer is set to an 'off' period.

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

Room thermostat is blocking heating mode

DIY fix possible

Check if your wall thermostat is set to a temperature higher than the current room temperature.Verify that the timer or programmer is set to 'ON' or 'AUTO' mode.If your thermostat is battery-powered, try replacing the batteries with fresh ones.

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Related fault codes

S.31View →S.36View →

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