I have domoticz and the ventclient running on my synology NAS. The ventserver is running on a RPI connected to the WHR with an USB to serial converter. When run in the console I only got values for the Airlevels, the temperatures showed no data. Changing the fanspeed was possible all the time. After ...

I installed version 0.3 yesterday with the server and client on different servers.
The only issue I have is that the temperature values are not correct all the time, they fluctuate between -20 and 100.

Hello domoticzcom1234,

I had the same issue, the problem is that the wiring instruction for the RJ45 to rs232 cable is wrong, it should be:

rj45 pin 2 -> rs232 pin 3
rj45 pin 3 -> rs232 pin 2
rj45 pin 8 -> rs232 pin 5