BoilerFaultCodesWhat the manual says
Manufacturer manualHigh system pressure (pressure switch detects excessive water pressure)
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
Locate a radiator positioned on the lowest floor of your home.Place a cloth under the radiator bleed valve and open it slightly to drain a small amount of water.Monitor the boiler's pressure gauge until it returns to the green zone (typically between 1.0 and 1.5 bar) and then close the valve.
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