Low
S.30 on Heatline Compact 30

Your boiler is currently in standby mode because it hasn't received a signal from your thermostat or hot water tap to start heating.

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.

What the manual says

Manufacturer manual

No request for heating or domestic water.

Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Turn up your room thermostat to a temperature higher than the current room temperatureCheck if your timer or programmer is set to 'On' or 'Timed' rather than 'Off'Run a hot water tap to see if the boiler initiates a firing sequence

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Related fault codes

S.31View →S.32View →

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