Set temperature via siri not working on iphone?
**Describe the bug**
If i want to change the temperature of a thermostate via siri, it doen't work on my iPhone (+ Apple Watch) , but works on my homepod.
Telling siri to change the temperature is leading to "there is no heater in this room".
On my homepod the exact same command works fine.
Could this be a iOS 15.4 public beta issue, or do i have smth misconfigured?

**To Reproduce**
Steps to reproduce the behavior:
1. Tell siri to change temperature in a room

**Expected behavior**
The temperature will be changed

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Smartphone (please complete the following information):**
 - Device: iPhone 13 Pro Max
 - OS: iOS 15.4 latest public beta

**Additional context**
Running with hoobs 4.0.110 with latest version of fritz-platform (6.0.19), everything is using german language (hoobs, iphone, homepod)