What the manual says
Manufacturer manualStatus of the pressure monitor
From this model's manual
Verified against the Vaillant Ecofit Pure 830 installation & service manual, page 30.
DIY fix possible
Check your boiler's pressure gauge on the front panel.If the needle is below 1 bar, top up the pressure using the external filling loop until it reaches 1.5 bar.Restart the boiler to see if the code clears.
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