What the manual says
Manufacturer manualDelete fault list
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
No action is required as this is a system status updateMonitor the boiler display to see if it returns to normal operationIf the boiler is otherwise working fine, simply ignore this message
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Related fault codes
All 78 fault codes on the Energy Regular
Seeing a different code? Every code this model can display, in one place.
Connectiond.02F.00F.01F.10F.11F.13F.20F.23F.24F.25F.27F.28F.29F.32F.49F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.77F.78F.83F.84F.85F.86F.87F.88F.91P.01P.02P.03P.04P.05P.06P.07P.10S.0S.01S.02S.03S.04S.05S.06S.07S.08S.20S.21S.22S.23S.24S.25S.26S.27S.28S.30S.31S.32S.34S.39S.42S.46S.53S.54S.88S.91S.96S.98S.99S.108S.109