I have a Trane XL824 thermostat (needed to control variable speed compressor), a Trane ZSENS930 Z-wave remote temperature sensor and multiple Zooz ZSE44 temperature sensors. The Trane remote temp sensor works fine, but they are about 4x the price of a normal Z-wave temperature sensor and the Zooz one I have fails to pair. I’m hoping to explore a workaround to use the Zooz one to save money.
Since the XL824 wants to be the hub it is looking for devices to pair with, can Hubitat look like a device? Can it be made to look like a ZSENS930, while getting temp data from the ZSE44? And/or can a ZSE44 be made to look like a ZSENS930? A workaround might save the community a lot of money and give some flexibility that the Trane thermostat lacks.
I’m new to z-wave/hubitat so please forgive me if these are dumb questions. Here are some observations in case this might be possible.
Pairing Zooz ZSE44 to XL824: device is found, but fails to be recognized by as a temperature sensor. I get the error message: “Device was added as node # but it was not a temperature sensor”
Pairing Trane ZSENS930 to XL824: Device is paired and populates in list of available remote sensors. The 930 part number and its 10-digit alphanumeric serial number are also listed.
Pairing Trane ZSENS930 to Hubitat: It pairs and I was able to use generic z-wave temperature sensor to read the temp. I get this pairing info:
You can't have two hubs, [ETA: connected to the same device - you can have two hubs running in parallel, but that does not seem to solve for your issue] so that solution is out. However, it seems you can make this work by connecting your T-stat to Hubitat via an integration, then using the Zwave sensors, connected to Hubitat, to direct the t-stat.
Thanks for the quick response. I installed the Nexia Thermostat Manager and it controls the XL824 perfectly. However, I think my issue may require some additional support.
I use the XL824 in Hold mode at one temperature and use remote sensors to adjust for hot rooms throughout the day (hot rooms move from one side of the house to the other). The XL824 allows multiple Trane ZSENS930 Z-wave remote temperature sensors to connect via its built-in Z-Wave hub. It calculates a weighted average of the sensors (user controlled weight %) which drives the thermostat. I want this functionality, but I don’t want to buy more Trane branded Z-wave temp sensors at a very high premium.
Additionally, the XL824 controls a variable speed HVAC unit and I don’t love the idea of using temperature overrides; I assume the XL824 is doing variable-speed-things when it is near/far from the set temperature, and I assume moving the set temperature will defeat the purpose/efficiencies of the variable speed HVAC unit.
The answer to your specific use case would depend upon how the app communicates with the Trane t-stat. There are two apps you can select from; I'm not familiar with either. Typically, if you post in the thread about the app, you will get responses from users and sometimes the developer.
What you are seeking to implement will work if the app that communicates with your t-stat will take data from other sensors in Hubitat and feed it to the t-stat as if the t-stat were directly connected to the sensor and then let the t-stat do it's calculations. This is very app and device specific and since I don't have that t-stat I can't help with that portion of it. In your case it is probably worth it to try both apps.
PS - I see you are new. Welcome to Hubitat! It all seems a bit overwhelming to start but once you get the hang of things it will be WELL worth it.
