Low
270 on Worcester Bosch Hideaway

Your boiler is simply working hard to increase its power output to meet the heating or hot water demand, which is a normal operation rather than a functional error.

Monitor it

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

The boiler is modulating upwards

DIY fix possible

Check if the heating or hot water has just been turned onMonitor the display to see if the code clears once the temperature stabilizesEnsure all radiator valves are open to allow heat to circulate

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