BoilerFaultCodesWhat the manual says
Manufacturer manualA service message is activated. Check the water pressure.
From this model's manual
Verified against the Vaillant/Vaillant Ecotec Pro Ecotec Plus Combi installation & service manual.
DIY fix possible
Check the pressure gauge on the front of your boiler to ensure it sits between 1.0 and 1.5 barIf the pressure is low, top it up using the filling loopBook an annual boiler service with a Gas Safe registered engineer to clear the reminder
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Related fault codes
All 82 fault codes on the ecoTEC pro 30 H combi A VUW GB 306/5-3
Seeing a different code? Every code this model can display, in one place.
F.00F.01F.10F.11F.20F.22F.23F.24F.25F.26F.27F.28F.29F.32F.49F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.73F.74F.75F.77F.78F.83F.84F.85S.00S.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.40S.41S.42S.46S.53S.54S.57S.58S.61S.62S.63S.88S.92S.93S.96S.97S.98S.99