Low
S.00 on Heatline Compact 30

Your boiler is currently in standby mode because it has not received a signal from your thermostat to turn on the 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

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

Check that your room thermostat is switched on and set to a temperature higher than the current room temperature.Ensure your external timer or programmer is set to 'on' or 'timed' mode.Check that your boiler's internal heating dial is turned up.

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