Can read data from Zigbee thermostat, but not update target temparature

[ubrog]

I’m new to HA and my initial goal was to control a Zigbee thermostat and change the temperature during day/night. I was able to connect it and HA shows me the temperature that is currently set on the thermostat. But whenever I try to change the temperature in HA, it doesn’t update the thermostat.
What am I missing?

Here’s what I’ve done:

• Installed HA on a Raspberry Pi 3B
• Connected a Sonoff Zigbee 3.0 USB Dongle Plus and installed Zigbee Home Automation (ZHA)
• Paired my thermostat with ZHA (Hama Smart Radiotor Thermostat)
• Changed the temparature at the thermostat: HA shows the updated temperature
• Tried to change the temperature in the HA dashboard, but it doesn’t do anything. It goes back to the last temparture when reloaded
• Tried the climate.set_temperature from developer tools. It shows success, but doesn’t do anything
• Installed Log Viewer to see if I can find any details, but I don’t find any errors in logs

What else can I try? Is it simply not possible or is there a hardware incompatibility? How would I find a thermostat that I can be sure works?

[Didgeridrew]

You may want to check out the following Community Guides:

Is Zigbee right for you?

What is this post for? More people are coming fresh to Home Assistant (and the Forum) after buying either a Yellow or a Green plus SkyConnect. When they want to add a few sensors, Zigbee seems the obvious choice - but it may not be the best option. Building a reliable Zigbee network can involve a considerable amount of time and expense, both of which may be unnecessary just to connect A to B. This post is intended to clarify what Zigbee is good at… and what it does less well. Zigbee is not wi…

Automating heating with smart thermostatic radiator valves, the full guide

One of the reason I started using Home Assistant years ago was being able to completely automate the heating in my apartment. Just for context I live in Germany and, as in most houses, the heating is distributed through radiators that can be controlled individually through valves. The goal that I had was to replace every one of these “dumb” valves with smart TRVs which I would be able to control and calibrate automatically through external temperature sensors. Although this should be quite eas…

[ubrog]

Thanks @Didgeridrew for the links. I realize Zigbee may not be the easiest network to set up and switching to Wifi would be an alternative (with its own downsides). But what I have at the moment is a Zigbee thermostat and I don’t want to give up just yet.
My issue is quite specific: The devices are connected and I can read the sensor data from the thermostat. Parts of the Zigbee network seems to be working. But when I try to change the temperature, HA makes it look like it worked (success message and no error in logs), but it doesn’t.

So I was hoping to find someone who had a similar problem or similar hardware who could point me towards what else I could do to troubleshoot this.

[Didgeridrew]

I was not trying to dissuade you from using Zigbee, I have about 50 Zigbee devices myself. My purpose was to point out how important a strong mesh is. Though it was a different type, make, and model, I had a similar issue with my thermostat when I first started using Zigbee. The solution came down to adding enough router devices to form a strong mesh.

[ubrog]

@Didgeridrew

Though it was a different type, make, and model, I had a similar issue with my thermostat when I first started using Zigbee. The solution came down to adding enough router devices to form a strong mesh.

That’s interesting. My plan is to add more devices in the future, but I wanted to get the basics set up without too much initial investment and then grow the number of devices.