BoilerFaultCodesWhat the manual says
Manufacturer manualWater pressure too high
Shared across the Ultracom 2 SXI 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 in your home that has a bleed valvePlace a cloth and container under the valveOpen the valve slightly to release a small amount of water until the pressure gauge on the boiler drops to the recommended level (usually between 1.0 and 1.5 bar)Tighten the valve firmly
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Related fault codes
All 75 fault codes on the Ultracom 2 SXI
Seeing a different code? Every code this model can display, in one place.