BoilerFaultCodesTechnical description
Input of set DHW value 2; adjustable from 1 to 95°C (observe coding address 56)
What causes this fault?
This code appears because the boiler has received a manual request to change the domestic hot water temperature to a secondary set value. It is typically triggered by a user or a specific heating program adjusting how hot the water in your taps should be. Because it is an informative notification rather than a mechanical failure, it does not indicate that a part has broken.
DIY fix possible
Check your hot water temperature settings on the boiler control panel or appEnsure the temperature is set to a comfortable level (typically 50-60°C)Restart the boiler to clear the notification if the setting was adjusted by mistake
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