Low
S.03 on British Gas 330+

Your boiler is currently going through its start-up sequence and is checking if it is safe to light the flame.

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

ignition

From this model's manual
Verified against the British Gas 330 installation & service manual, page 47.
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

Wait for a few minutes as this is often a normal part of the boiler's operation.Ensure your thermostat is calling for heat.Check if other gas appliances in your home are working to confirm gas supply.

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