BoilerFaultCodesYour boiler is currently working as it should and is providing heat to your radiators.
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: Burner connected, heating mode (Live monitor)
What causes this fault?
This isn't actually a fault, but rather a status update showing that your boiler is successfully burning gas to heat your home. It appears when the internal thermostat or external controls have requested heat, and the boiler has successfully lit the burner to meet that demand. You are seeing this because the boiler is operating exactly as it was designed to.
This code is most frequently seen during the autumn and winter months when the central heating is switched on regularly to keep the home warm.
DIY fix possible
This fault may be fixable without an engineer. Check your manual first.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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A boiler cover plan would cover faults like S.04 — no call-out fees, no surprises.
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