BoilerFaultCodesThis is a normal status message indicating that your boiler is currently working correctly to heat your hot water.
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: Hot water operation burner is on
What causes this fault?
This status occurs when the boiler detects a demand for hot water and successfully ignites the burner to meet that need. It is not a malfunction, but rather a confirmation that the internal components are operating correctly to transfer heat to your water supply. As long as you have hot water at your taps, the boiler is performing its job exactly as intended.
DIY fix possible
No action is required as this is a status code, not a fault.Check your taps or cylinder to ensure hot water is being delivered as expected.The code will disappear once the hot water demand is met.
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A boiler cover plan would cover faults like S.24 — no call-out fees, no surprises.
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Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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