BoilerFaultCodesYour boiler is notifying you that a specific setting for your hot water temperature has been manually adjusted or requested.
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: Input of a set DHW value 2; adjustable from 1 to 95°C
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
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like 58:1 to 58:95 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.