What the manual says
Manufacturer manualSoftware version: PeBUS participant
From this model's manual
Verified against the Vaillant Ecotec Pro installation & service manual, page 44.
DIY fix possible
No action is required as this is a status code, not a fault.If the boiler is displaying this during normal operation, simply ignore it.If the boiler has stopped working, turn it off at the mains for 60 seconds and restart it.
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