BoilerFaultCodesYour boiler is currently working as it should to heat up your tap water and is not experiencing an actual fault.
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: boiler is operating for DHW
What causes this fault?
This code appears when the boiler detects a demand for hot water and begins the ignition sequence to heat it. It is simply a status message letting you know that the internal components are busy diverting energy to your taps or shower. Once you turn the tap off, the display should return to its normal standby or heating mode.
DIY fix possible
No action is required as this is a status message rather than an error.Wait for the hot water demand to end; the boiler will then return to heating mode or standby.Check that your hot water taps are fully closed if the code stays on for a long time.
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A boiler cover plan would cover faults like 4 — no call-out fees, no surprises.
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Remeha Avanta Plus is discontinued — time for a new one?
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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