Vitocal 222-s, microUSB Optolink Adapter, vcontrold, vclient - Error states readout

[Jusufs]

Hi,
Vitocal 222-s, DYI Optolink USB interface, raspi (vcontrold, vlink client)

How can I read out all known error states please ?

<unit name='ErrorState'>
   <abbrev>ES</abbrev>
   <type>errstate</type>
   <enum bytes='00' text='Control mode (no error)'/>
   <enum bytes='0F' text='Maintenance (reset coding for 24 to 0)'/>
   <enum bytes='10' text='Outside temperature sensor short circuit'/>
   <enum bytes='18' text='Lead break outside temperature sensor'/>
   <enum bytes='20' text='Short-circuit flow temperature sensor'/>
   <enum bytes='21' text='Short-circuit temperature sensor rewind'/>
      ... etc
   <enum text='UNKNOWN'/>
</unit>

Link (file) with Vitocal 222 with relevant error codes would be very helpfull.
Thanks for help.

[Jusufs]

Jozef-vito-vcontrold-xml.zip