BoilerFaultCodesWhat the manual says
Manufacturer manualWater pressure too high
Shared across the Energy 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 is easily accessibleAttach a bleed key to the radiator valve and open it slowly until water starts to drip outMonitor the pressure gauge on your boiler until it drops back into the green zone (usually 1.0 to 1.5 bar) and then tighten the valve
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Related fault codes
All 85 fault codes on the Energy System
Seeing a different code? Every code this model can display, in one place.
ConnectionF.00F.01F.10F.11F.13F.20F.22F.23F.24F.25F.27F.28F.29F.32F.49F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.73F.74F.75F.76F.77F.78F.83F.84F.85F.86F.87F.88F.89F.91F22S.01S.02S.03S.04S.05S.06S.07S.08S.10S.11S.13S.14S.15S.16S.17S.20S.21S.22S.23S.24S.25S.26S.27S.28S.30S.31S.32S.33S.34S.39S.42S.46S.53S.54S.76S.88S.91S.96S.97S.98S.99S.108S.109