Ventilation setpoint never goes below 30%

[JoostGadellaa]

Describe the bug
I might be missing something, but whatever I set the fan speed to, in the Itho status tab it never reports anything lower than 30% as the ventilation setpoint.

To Reproduce
normaly use MQTT, but this is via the web interface. I've set the Preset to medium just to be sure:

1. On the main page of the web interface, set the fan to something below 76. In the example I pick 29, which should be something like 29 / 255 = 12%
2. Click Itho status
3. Look at Ventilation setpoint (%)
4. Notice it is at 30%

Expected behaviour
I would expect the setpoint to become the set value

Screenshots

Device information

• Current firmware version: 2.6.0
• Hardware revision: 2
• Itho device type: CVE-Silent
• Itho fw version: 27
• CC1101 RF module enabled: no

[arjenhiemstra]

see:
https://github.com/arjenhiemstra/ithowifi/wiki/Controlling-the-speed-of-a-fan#help-fan-wont-go-lower-than-ie-30

[JoostGadellaa]

Ah, I could have guessed that this was known. Thanks!