What the manual says
Manufacturer manualForcedfanoperationuntilthepressuremonitorisswitched
Shared across the Essential 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 the pressure gauge on the front of the boiler.If the needle is below 1 bar, locate the filling loop (usually a silver braided hose under the boiler).Open the valves on the filling loop to allow water into the system until the gauge reaches 1.5 bar.Close the valves tightly and restart the boiler.
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Related fault codes
All 83 fault codes on the Essential
Seeing a different code? Every code this model can display, in one place.
F.00F.01F.10F.11F.13F.20F.22F.23F.24F.25F.27F.28F.29F.32F.33F.49F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.73F.74F.75F.77F.78F.83F.84F.85F.86F.87F.88F.89F22S.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.34S.39S.41S.42S.46S.53S.54S.88S.91S.96S.97S.98S.99S.108S.109