# Homey Pro 2023 and Heatit z-trm3 connection problem

**URL:** <https://community.homey.app/t/homey-pro-2023-and-heatit-z-trm3-connection-problem/87593>\
**Category:** Questions & Help\
**Tags:** homey-pro\
**Created:** [August 20, 2023, 7:12pm UTC](https://community.homey.app/t/homey-pro-2023-and-heatit-z-trm3-connection-problem/87593 "2023-08-20T19:12:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Leifster](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/leifster/32/81236_2.png) [@Leifster](https://community.homey.app/u/Leifster)\
**Post date:** [August 20, 2023, 7:12pm UTC](https://community.homey.app/t/homey-pro-2023-and-heatit-z-trm3-connection-problem/87593/1 "2023-08-20T19:12:41Z")

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I recently bought a Homey Pro 2023 to control 3x Heatit z-trm3 floor heating thermostats, but I’m unable to connect with any of them.

I suspect a bad homey unit, but thought I should check here for advice before starting a RMA.

My first problem with the Homey occurred during setup. It refused to connect with the 5 GHz network. Homey complained about bad username/password even if I’m 100% sure it was correct. After opting for 2.4GHz the setup went fine. Homey is also updated to latest firmware.

I have followed all tips regarding Heatit connection procedure: Tested with all 3x thermostats, reset thermostats a numer of times, tried with a variety of ranges to the Homey unit from 0 cm to a few meters.

Regardless what I do Homey will not see a single unit and the Heatits shows Err after some time. (After selecting «Con» and watching the spinning circle for a while.)

Unfortunately I have no other z-wave units to test with. No zigbee units either for that matter.

Anybody got any ideas?

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**Author:** ![DirkG](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dirkg/32/118897_2.png) [@DirkG](https://community.homey.app/u/DirkG)\
**Post date:** [August 21, 2023, 12:03pm UTC](https://community.homey.app/t/homey-pro-2023-and-heatit-z-trm3-connection-problem/87593/2 "2023-08-21T12:03:57Z")

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I can’t give you a hint to your problem, because I don’t have any Z-TRM3 thermostats in use myself, but it would be useful if you could tell which error it’s exactly.  
If your Homey or the Z-Wave unit is indeed broken, then it doesn’t matter if e.g. Zigbee devices could be paired.

My recommendation is that you describe your problem in this [thread](https://community.homey.app/t/app-pro-heatit-controls-app-v3-4-1/49914). In this thread there are Heatit Controls staff active and they can probably help you.

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**Author:** ![Leifster](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/leifster/32/81236_2.png) [@Leifster](https://community.homey.app/u/Leifster)\
**Post date:** [August 22, 2023, 1:45pm UTC](https://community.homey.app/t/homey-pro-2023-and-heatit-z-trm3-connection-problem/87593/3 "2023-08-22T13:45:14Z")

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Thanks. I will try that.