Your boiler is currently operating normally and 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: Boiler is supplying central heating.
What causes this fault?
This is not actually a fault code, but rather a status indicator telling you that the boiler is working exactly as it should. It signifies that the internal components have successfully ignited and describing that the unit is currently busy sending heat to your radiators. You do not need to take any action when you see this number on the display.
This code is more frequently seen during the autumn and winter months when the heating is programmed to be on more often.
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 3 — no call-out fees, no surprises.
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