BoilerFaultCodesWhat the manual says
Manufacturer manualMaintenance message: Check the water pressure
From this model's manual
Verified against the Glow Worm/Glow Worm Energy installation & service manual, page 33.
DIY fix possible
Locate the filling loop (a silver flexible hose with one or two valves) underneath your boiler.Slowly open the valve(s) to let water into the system until the pressure gauge on the front of the boiler reads between 1.0 and 1.5 bar.Ensure the valve(s) are closed tightly once the pressure is correct.
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Related fault codes
All 94 fault codes on the Energy
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.33F.49F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.73F.74F.75F.76F.77F.78F.83F.84F.85F.86F.87F.88F.89F.91P.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.30S.31S.32S.33S.34S.39S.41S.42S.46S.53S.54S.88S.91S.96S.97S.98S.99S.108S.109