# \[APP\]\[PRO\] VThermo **URL:** \ **Category:** Apps\ **Tags:** app\ **Created:** [October 24, 2020, 12:28pm UTC](https://community.homey.app/t/app-pro-vthermo/36442 "2020-10-24T12:28:56Z")\ **Posts on this page:** 20\ **Page:** 4
**Author:** ![milkplus](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/milkplus/32/35755_2.png) [@milkplus](https://community.homey.app/u/milkplus)\ **Post date:** [March 24, 2021, 8:55am UTC](https://community.homey.app/t/app-pro-vthermo/36442/63 "2021-03-24T08:55:28Z")
noted! thanks for you help. will give this a go. really quite excited to have SOME level of control over my expensive-yet-dumb Mill heaters again ---
**Author:** ![Angel\_Escudero](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/angel_escudero/32/13512_2.png) [@Angel\_Escudero](https://community.homey.app/u/Angel_Escudero)\ **Post date:** [March 28, 2021, 4:01pm UTC](https://community.homey.app/t/app-pro-vthermo/36442/64 "2021-03-28T16:01:48Z")
Hello @balmli I have in an “office” room, an aquara temperature sensor and a netatmo radiator valve. I want to use the Vtermostat to act on the valve if the temperature of the aquara sensor changes. Perhaps it cannot be done with this application because I have not fully understood how it works. Thankful in advance for the answer. ---
**Author:** ![balmli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/balmli/32/1308_2.png) [@balmli](https://community.homey.app/u/balmli)\ **Post date:** [March 31, 2021, 6:21am UTC](https://community.homey.app/t/app-pro-vthermo/36442/65 "2021-03-31T06:21:49Z")
Hi Angel, You can use VThermo to act on the Netatmo radiator valve, but you’ll need two flows: 1 - when: VThermo “Thermostat turned on”, then: Netatmo “Set target temperature” with a high value 2- when: VThermo “Thermostat turned off”, then: Netatmo “Set target temperature” with a low value This will simulate controlling the Netatmo radiator valve. Since VThermo uses all temperature sensors in the same zone, you might need to move the Netatmo to another zone. ---
**Author:** ![kenmyh](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kenmyh/32/34298_2.png) [@kenmyh](https://community.homey.app/u/kenmyh)\ **Post date:** [May 8, 2021, 5:44am UTC](https://community.homey.app/t/app-pro-vthermo/36442/66 "2021-05-08T05:44:35Z")
Hello! Can I use Vthermo directly with mill heaters? I’ve done some testing, and it looks like vthermo doesn’t turn the mill heater on/off, eventhough they are in the same zone. From what I’ve gathered, I must use flows to turn the heater on/off. Is this correct? /Kenneth ---
**Author:** ![balmli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/balmli/32/1308_2.png) [@balmli](https://community.homey.app/u/balmli)\ **Post date:** [May 8, 2021, 3:53pm UTC](https://community.homey.app/t/app-pro-vthermo/36442/67 "2021-05-08T15:53:18Z")
Hi Kenneth, Well, VThermo can set the target temperature of other thermostats, when it acts as a master thermostat. But it cannot turn other thermostats directly on / off. And I guess that Mill heaters are thermostats, right ? ---
**Author:** ![kenmyh](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kenmyh/32/34298_2.png) [@kenmyh](https://community.homey.app/u/kenmyh)\ **Post date:** [May 10, 2021, 6:51am UTC](https://community.homey.app/t/app-pro-vthermo/36442/68 "2021-05-10T06:51:05Z")
I would guess so. Probably acts as a thermostat. I solved with a flow to turn it on/off. But still, it looks like the mill heater stay on, sometimes… Which I find strange. ---
**Author:** ![jeremypsl](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jeremypsl/32/31124_2.png) [@jeremypsl](https://community.homey.app/u/jeremypsl)\ **Post date:** [May 17, 2021, 8:38am UTC](https://community.homey.app/t/app-pro-vthermo/36442/69 "2021-05-17T08:38:57Z")
How work this thermostat ? Hysteresis control or Proportional-integral-derivative control ? ---
**Author:** ![balmli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/balmli/32/1308_2.png) [@balmli](https://community.homey.app/u/balmli)\ **Post date:** [May 17, 2021, 12:27pm UTC](https://community.homey.app/t/app-pro-vthermo/36442/70 "2021-05-17T12:27:58Z")
Hi, It uses hysteresis control ---
**Author:** ![Paul](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/paul/32/12987_2.png) [@Paul](https://community.homey.app/u/Paul)\ **Post date:** [May 20, 2021, 8:51am UTC](https://community.homey.app/t/app-pro-vthermo/36442/71 "2021-05-20T08:51:51Z")
Hello, Perhaps a silly question, but I cannot find out how/where to set the target temperature. ---
**Author:** ![balmli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/balmli/32/1308_2.png) [@balmli](https://community.homey.app/u/balmli)\ **Post date:** [May 20, 2021, 9:12am UTC](https://community.homey.app/t/app-pro-vthermo/36442/72 "2021-05-20T09:12:46Z")
Hi, Yes, and not a silly question. From the Homey mobile app: slide from lower left and up Or with a flow. ---
**Author:** ![Paul](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/paul/32/12987_2.png) [@Paul](https://community.homey.app/u/Paul)\ **Post date:** [May 20, 2021, 9:51am UTC](https://community.homey.app/t/app-pro-vthermo/36442/73 "2021-05-20T09:51:38Z")
Hi, Thanks for this clarification, simple. I would like to set the target temperature with a Flow (using the temperature of another Temp Sensor in another sub-zone. So I can see if it is warmer or colder than in that sub-zone). But I do not have/see this possibility. Or am I missing something (again)? ![Picture1](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/2/8/281ab7bc81751eea6a12a1f8a18b576b2169afb5.png) What is exactly de function of: -Set the temperature … -Update the temperature to … °C Is this the “room” temperature? or perhaps the Target temperature? ---
**Author:** ![balmli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/balmli/32/1308_2.png) [@balmli](https://community.homey.app/u/balmli)\ **Post date:** [May 20, 2021, 10:15am UTC](https://community.homey.app/t/app-pro-vthermo/36442/74 "2021-05-20T10:15:32Z")
Yes, I see that this is confusing. “Set the temperature” → use this to set the target temperature. “Update the temperature to…” → use this to “copy” the measured temperature from another sensor. ---
**Author:** ![Paul](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/paul/32/12987_2.png) [@Paul](https://community.homey.app/u/Paul)\ **Post date:** [May 20, 2021, 11:42am UTC](https://community.homey.app/t/app-pro-vthermo/36442/75 "2021-05-20T11:42:40Z")
OK, clear 🙂 Thanks for the explanation. This makes it clear for me. Thanks 👍 ---
**Author:** ![gass66](https://avatars.discourse-cdn.com/v4/letter/g/b38774/32.png) [@gass66](https://community.homey.app/u/gass66)\ **Post date:** [September 6, 2021, 1:49pm UTC](https://community.homey.app/t/app-pro-vthermo/36442/76 "2021-09-06T13:49:52Z")
Hi, and thanks for the great work with this app. I’m trying to use VThermo to control a HeatIt Z-TRM3 thermostat (electric floor heating). Class is thermostat. and the unit has three different thermostat options (internal, external and floor). I only have the internal active, but that is useless for heat control, since the unit is installed outside the room. I have an Agura zigbee temperature sensor in the room, updating VThermo. I can also get the temperature from Z-TRM3 to VThermo. It seems though that my setup of VThermo is not able to update and override Z-TRM3’s settings. Anyone with experience from a similar setup that has any ideas? ![screenshot z-trm3 1](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/d/c/dc1956268a5bc39fc995a3287516b33d4f923be1.jpeg) ![screenshot z-trm3 2](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/3/f3947e68eb19f23b9d843e8517d45ea901877b70.jpeg) ---
**Author:** ![balmli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/balmli/32/1308_2.png) [@balmli](https://community.homey.app/u/balmli)\ **Post date:** [September 6, 2021, 3:23pm UTC](https://community.homey.app/t/app-pro-vthermo/36442/77 "2021-09-06T15:23:41Z")
VThermo can 1. get the temperature (measure\_temperature - capability) from other thermostats, and 2. update the target temperature (target\_temperature - capability) If you want to control the ZTRM3 by turning the heat on / off, that is not possible without using flows. ---
**Author:** ![gass66](https://avatars.discourse-cdn.com/v4/letter/g/b38774/32.png) [@gass66](https://community.homey.app/u/gass66)\ **Post date:** [September 6, 2021, 4:41pm UTC](https://community.homey.app/t/app-pro-vthermo/36442/78 "2021-09-06T16:41:03Z")
Thanks for your quick reply. I’ll set up some flows, then. Just an idea: If the HeatIt-app ( and apps for other thermostat controllers) had an option to choose “class” for the device, like “Thermostat” or “Heater”, we could have used VThermo to manage Z-TRM3 temperature from other thermostats without using flows? I know choosing “class” is possible for Zigbee devices, would think the same goes for Z-wave. ---
**Author:** ![balmli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/balmli/32/1308_2.png) [@balmli](https://community.homey.app/u/balmli)\ **Post date:** [September 7, 2021, 6:30am UTC](https://community.homey.app/t/app-pro-vthermo/36442/79 "2021-09-07T06:30:21Z")
The class here is the “device class”, something special for Homey apps, not z-wave specific. The problem is not that the device class is “thermostat”, but that the “measure\_temperature” capability that is used in the Z-TRM3 is “read only”… It’s not possible to update the temperature measured in the device (internal, external, floor) from outside. It’s a part of the Z-TRM3 hw / fw. But, it’s possible to control the Z-TRM3 (and other thermostats), by setting the target temperature sufficiently above / below the measured temperature… ---
**Author:** ![Shiki](https://avatars.discourse-cdn.com/v4/letter/s/5fc32e/32.png) [@Shiki](https://community.homey.app/u/Shiki)\ **Post date:** [October 23, 2021, 4:37pm UTC](https://community.homey.app/t/app-pro-vthermo/36442/80 "2021-10-23T16:37:54Z")
@balmli I’m trying to use Vtherm to control infrared on aircon, I’m curious if the Target temperature step (°C) able to set 1.0 °C instead of step of 0.25 °C and 0.50 °C ? ---
**Author:** ![balmli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/balmli/32/1308_2.png) [@balmli](https://community.homey.app/u/balmli)\ **Post date:** [October 25, 2021, 6:11pm UTC](https://community.homey.app/t/app-pro-vthermo/36442/81 "2021-10-25T18:11:27Z")
No, just 0,5 and 0,25 steps are possible now. ---
**Author:** ![Viktor](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/viktor/32/8030_2.png) [@Viktor](https://community.homey.app/u/Viktor)\ **Post date:** [November 1, 2021, 1:49pm UTC](https://community.homey.app/t/app-pro-vthermo/36442/82 "2021-11-01T13:49:19Z")
Hi @balmli , thank you for the excelent App. Question: somehow VThermo stopped syncing the Temp with the Sensors and ist not turning on or off the heaters (in the same zone, since 1 week). Strange is, the App is not updated since couple of months. Do you have similar mesages from other users? Tnx, Viktor. [Previous page](https://community.homey.app/t/app-pro-vthermo/36442.md?page=3) [Next page](https://community.homey.app/t/app-pro-vthermo/36442.md?page=5)