BoilerFaultCodesWhat the manual says
Manufacturer manualWater pressure is too low (<1.0 bar). Power is reduced by 20%. The installation should be refilled.
From this model's manual
Verified against the Atag Ic28 installation & service manual, page 48.
DIY fix possible
Locate the filling loop (the flexible silver hose) underneath or near the boiler.Open the one or two taps/levers on the filling loop until the pressure gauge reads between 1.2 and 1.5 bar.Fully close both taps and ensure the code has cleared.
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