Your boiler is working normally but the temperature of the water going to your radiators is currently set to a low level.
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 operating, low flow temperature selected.
What causes this fault?
This code appears when the user-adjustable temperature dial for the central heating is set to a very low position. It is simply an status indication that the boiler is successfully firing but is restricted to producing lukewarm water for your radiators. This often happens if the dial has been bumped or turned down during warmer weather.
This code is frequently seen in Autumn when homeowners first turn their heating back on but have forgotten the thermostat or boiler dial was set to a minimum over the summer.
DIY fix possible
Locate the temperature control dial on the front of the boilerTurn the dial clockwise to increase the flow temperatureWait to see if the radiators reach your desired warmth
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