BoilerFaultCodesWhat the manual says
Manufacturer manualRoom thermostat is blocking heating mode.
Shared across the Energy7 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 your wall thermostat or heating controller and turn the target temperature up higher than the current room temperature.Check if your thermostat is set to 'Auto' or 'Schedule' mode and ensure a heating period is currently active.Replace the batteries in your wireless thermostat if the display is blank or dim.
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Related fault codes
All 95 fault codes on the Energy7 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.91F.97F22P.01P.02P.03P.04P.05P.06P.07P.10S.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.31S.32S.33S.34S.39S.41S.42S.46S.53S.54S.76S.88S.91S.96S.97S.98S.99S.108S.109