Low
270 on Worcester Bosch Hideaway 90

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.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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.

What the manual says

Manufacturer manual

The boiler is modulating upwards

Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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