Domoticz

Version: Domoticz 2024.7
Platform: Raspberry Pi
Plugin/Hardware: Popp (formerly Danfoss) Z-Wave Thermostat Radiator Valves model 010101
Description:

Hello!

This is my first post here, and I’m not even sure if that’s the best place, as my issue looks hardware-related, not Domoticz-related.

I have 3 Popp/Danfoss Z-Wave Thermostat Radiator Valves (TRV) model 010101 (see https://popp.eu/products/wireless-thermostatic-valve/) that I’ve been using for a few years :
- paired with an AEON Labs Z‐Stick Gen5 USB Controller
- plugged into a Raspberry Pi 3 Model B Rev 1.2
- running Raspbian GNU/Linux 11 (bullseye)
- running zwave-js-ui: 9.6.2.6e369a1 + zwave-js: 12.4.1
- running Domoticz 2024.7

Since September 2024, one of these TRV has stopped working properly: whatever setpoint I set, and whatever the means (through Domoticz or physically on the device itself), it resets itself back to 20°C after a few seconds.

I’ve tried :
- changing the batteries
- factory resetting the devices
- re-pairing it with the Z-Stick

Nothing had any effect.

I’m thinking of replacing the device, but not before throwing a message in a bottle here.

I moved the topic to the Zwave sub forum.
The only other possibility I could think of is some script that is (re)setting the setpoint.

Is there any difference in setting the setpoint from Domoticz or Zwave-JS-UI? You could check with Mqtt explorer if the temperature is set from Domoticz or from Zwave-JS-UI. And then you have to find out what the real source is of the setpoint resetting is.

Hello and thanks for your suggestions.

As I said, what troubles me the most is that changing the setpoint on the device itself (= by using its physical buttons) yields the same result, so I’d imagine that Zwave-JS-UI/Domoticz are downhill from the issue source.

I’ve contacted Popp about it ; I will let you know if I get a useful reply.

If some script from Domoticz is setting the temperature at 20 degree it will also do that when set manually on the device itself.

But if you are unaware of such a script it probably is an hardware issue.

I’ve contacted Popp support who advised me to exclude the problematic TRV node from its Z-Wave network controller.

After I did, the TRV stopped resetting to 20°C.

I included it back, and everything seems to be fine again.