BoilerFaultCodesWhat the manual says
Manufacturer manualWater pressure > 2.8 bar
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.
DIY fix possible
Check that the silver braided filling loop valves are tightly closedBleed water from a radiator using a radiator key to reduce the pressureMonitor the pressure gauge to ensure it returns to between 1.0 and 1.5 barReset the boiler once the pressure is within the normal range
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