BoilerFaultCodesWhat the manual says
Manufacturer manualWater pressure too high
Shared across the Ultimate 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 with a bleed valve.Use a radiator key to open the valve slightly until a small amount of water escapes.Close the valve once the pressure gauge on the front of the boiler drops back into the green zone (usually between 1.0 and 1.5 bar).
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Related fault codes
All 159 fault codes on the Ultimate 3 25R
Seeing a different code? Every code this model can display, in one place.
Connectiond.00d.01d.02d.04d.05d.06d.07d.08d.09d.10d.11d.13d.14d.15d.16d.17d.18d.19d.20d.21d.22d.23d.24d.25d.27d.28d.31d.33d.34d.35d.36d.39d.40d.41d.43d.45d.47d.50d.51d.58d.60d.61d.62d.64d.65d.66d.67d.68d.69d.70d.71d.73d.75d.77d.80d.81d.82d.83d.84d.85d.88d.90d.91d.93d.94d.95d.96F.00F.01F.10F.11F.12F.13F.20F.22F.23F.24F.25F.27F.28F.29F.32F.49F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.73F.74F.75F.77F.78F.83F.84F.85F.86F.87F.88F.89F.91F22P.01P.02P.03P.04P.05P.06P.07S.0S.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.88S.91S.96S.97S.98S.99S.108S.109