This bug has been fixed; please waiting for a new firmware update.
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Here also overshooting of the requested temperature. Set to 17 celsius and it goes up to 19!
Current firmware is 0.0.0_1839 and is up-to-date
M3 Hub
W600
External temp sensor T1
Setting hasn’t changed and this is the reading on the temp sensor:
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Hello, wait for the updated firmware, it fixed some temperature errors. Check if you have it in the app.
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Already planning on doing that. But just wanted to pile on 
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Set at 15° and then 14-15°c fluctuations?
If yes, that is nice yeah.
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Guys, is it really 15 degrees in your apartment? What’s the point of having thermostats then? My heating doesn’t even kick in at 20. I’d love to see a graph with the setting at 22.5 at the very least.
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Hello,
Haha, 22°C is the tropics, there’s nothing to breathe. My working room temperature is 18°C. On the screen is a room (non-critical) where I can set the temperature without a signal to the boiler (start) 15°C.
Look at how it was before the update and how it was after, I specially made a large time sample.
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Yes, 15°С.
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> Not sure if I’m on the right track here, but I get 18°C even with the heating killed. Buying smart valves seems like a waste. My neighbors would probably hate me for ‘leeching’ their heat. We’re legally supposed to have 20°C at work, so why go lower at home?
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In a private two-story house, “- 1°C” is a minus in the payment for gas (electricity) ~ 10%. 
And your neighbors in the apartment are heating you (18°).
For your information, there are two types of temperature.
- Stable - 18°C when the heat source is not turned on (cold, damp in the room).
- Heated temperature 18°C, when there is a periodic turning on of the heat source (infrared radiation from heating batteries, humidity is normal).
I raise the temperature during the transition period from autumn to spring to increase the periodicity of heating.
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No, my livingroom is a cozy 20 degrees. But I have a house that has rooms I only sometimes need to heat. That is where the smart valves come in. In my livingroom they are pointless, always open full blast and my thermostat is set to 20.
My bedroom just before I go to sleep is heated a bit and then I turn heating off.
My bathroom only needs to be warm in the evening, at the moment I have 2 weeks of and without smart valves I would be heating the bathroom all day for no reason.
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I have the new firmware but still issues.
Today, one thermostat just heated to 28 degrees out of nowhere. It was set to 15! degrees.
@AqaraBot @AqaraOfficial this is costing me money every day. No one ever needs 28 degrees! How can things like this happen?
@nick_k I’m sorry to hear you’re still experiencing issues even after the new firmware update—that must be frustrating, especially with the unexpected overheating driving up costs.
For the unstable temperature regulation issue with the Aqara Radiator Thermostat W600, you can refer to this community discussion which addresses similar unstable ON/OFF heating problems: Regulation Problem: New Aqara Radiator Thermostat W600 - Unstable Heating ON/OFF. This information comes from community discussions and user experience summaries and may vary by environment. Please verify carefully.
If the solutions in the post don’t resolve your issue, feel free to share more details about your setup (like hub model or sensor linkage) here—other users might have additional insights
Hello, what is the firmware number?
1.0.0.6
And it is still heating. I turned it off, I tried to put the temperature even further down but nothing works.
What are these numbers???
That is the firmware number
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I understand you have Thread connected. Do you have the ability to connect Zigbee?