no error message from the heating

[lpunkt66]

Hello everyone,

I have an ebusd adapter v5 and a Vaillant heater VC216.
Everything works so far that I can control the heating and hot water temperatures from Home Assistant.

Now to my question: The Vaillant app (multimatic V3.20.2) has been reporting an error M.22 CO2 sensor defective since Sunday at 11:55 p.m.
You can also see the error message F.55 on the device. Unfortunately I can't find any error messages in Home Assistant or on the mqtt broker (current error under bai oder 700).

Is there anything I can adjust or am missing?

thanks in advance,

L.