# Heatit ZM single relay **URL:** \ **Category:** Apps\ **Tags:** app, z-wave\ **Created:** [May 20, 2021, 7:29pm UTC](https://community.homey.app/t/heatit-zm-single-relay/47608 "2021-05-20T19:29:43Z")\ **Posts on this page:** 13\ **Page:** 2
**Author:** ![Thunstop](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/thunstop/32/33966_2.png) [@Thunstop](https://community.homey.app/u/Thunstop)\ **Post date:** [December 12, 2021, 10:50am UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/21 "2021-12-12T10:50:47Z")
Hi, just testet out and working with power meter perfectly! Yay! 😁 Not sure why energy meter says 89kwh, maybe it tracked consumption locally until finally syncing ![Screenshot_20211212-114821_Homey](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/d/0/d052e2da9fd99aa45e48914793d8480417b378c0.jpeg) ---
**Author:** ![HeatitControlsAB](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/heatitcontrolsab/32/43240_2.png) [@HeatitControlsAB](https://community.homey.app/u/HeatitControlsAB)\ **Post date:** [December 13, 2021, 7:56am UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/22 "2021-12-13T07:56:04Z")
Hi, that’s correct. It stores/measures even though not included. ---
**Author:** ![PalJensen](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/paljensen/32/34840_2.png) [@PalJensen](https://community.homey.app/u/PalJensen)\ **Post date:** [January 9, 2022, 2:10pm UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/23 "2022-01-09T14:10:35Z")
Does someone have a guidt to set association between Z-TRM 2 and single Relay ? I find the instructions in the homy app a bit “blury”… This is the information in the Heatit doc: SETTING ASSOCIATIONS After the device is added to your Z-Wave gateway you will need to link the thermostat to the device that is going to controll the heating. This is done by using association groups from the thermostat’s root device (EP0) with Group 3 (GR3) towards your actuator device (using Multichannel or Singlechannel, based on the controlled device type. ---
**Author:** ![Torstein](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/torstein/32/2043_2.png) [@Torstein](https://community.homey.app/u/Torstein)\ **Post date:** [January 20, 2022, 9:59am UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/24 "2022-01-20T09:59:55Z")
Other topic about Heatit ZM single relay: Does anyone encounter sudden “power loss” and restore without any warnings or zero wattage used in the insights? Appliance that is connected to socket is suddenly “reset”, so therefore I noticed recently. ---
**Author:** ![Torstein](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/torstein/32/2043_2.png) [@Torstein](https://community.homey.app/u/Torstein)\ **Post date:** [January 28, 2022, 9:12am UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/25 "2022-01-28T09:12:02Z")
Update: Got this from Heatit (Thermofloor norway?) support regarding issues with power loss: Hello, > Can you try to include the device again and use code 00000 during inclusion? > This will add the device without S2 security. We have seen some problems with S2 security. ---
**Author:** ![SunEast](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/suneast/32/34199_2.png) [@SunEast](https://community.homey.app/u/SunEast)\ **Post date:** [February 5, 2022, 4:45pm UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/26 "2022-02-05T16:45:07Z")
Hello. Why is my ZM Relay 16amp reporting so incorrectly? This happens about once a week! ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/b/d/bd09ce1b14bd9f345580cc0341d87414b16fadb4.png) ---
**Author:** ![Joel\_Larsson](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/joel_larsson/32/9613_2.png) [@Joel\_Larsson](https://community.homey.app/u/Joel_Larsson)\ **Post date:** [February 16, 2022, 4:55pm UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/27 "2022-02-16T16:55:14Z")
Hi. I just installed a Heatit ZM and noticed that the energy is resets sometimes. Is there any setting that have gone wrong? ![Skärmavbild 2022-02-16 kl. 17.53.29](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/1/2/120b80546bdc001ab6b9f504f179b2389d0510fb.png) ---
**Author:** ![HeatitControlsAB](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/heatitcontrolsab/32/43240_2.png) [@HeatitControlsAB](https://community.homey.app/u/HeatitControlsAB)\ **Post date:** [February 18, 2022, 2:20pm UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/28 "2022-02-18T14:20:20Z")
Hi, Could you please send us an email at [post@heatit.com](mailto:post@heatit.com)? ---
**Author:** ![HeatitControlsAB](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/heatitcontrolsab/32/43240_2.png) [@HeatitControlsAB](https://community.homey.app/u/HeatitControlsAB)\ **Post date:** [February 18, 2022, 2:23pm UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/29 "2022-02-18T14:23:19Z")
Hi, It looks like the device is rebooting. It stores the accumulated value in flash once an hour so if the devices is rebooted it will lose the data after the last time it saved. ---
**Author:** ![HeatitControlsAB](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/heatitcontrolsab/32/43240_2.png) [@HeatitControlsAB](https://community.homey.app/u/HeatitControlsAB)\ **Post date:** [February 18, 2022, 2:38pm UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/30 "2022-02-18T14:38:07Z")
Hi, Below is a quick guide. In the example the Single Switch has Node ID 4. In the advanced settings on the thermostat you have a part about associations. In the group related to On/off control you then just write 4 and save. ---
**Author:** ![SimenK](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/simenk/32/101143_2.png) [@SimenK](https://community.homey.app/u/SimenK)\ **Post date:** [May 1, 2025, 8:32am UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/31 "2025-05-01T08:32:04Z")
Is it possible to reset the power meter on this relay? My relay has stopped on 6320 kWh, and doesnt count anymore. ---
**Author:** ![HeatitControlsAB](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/heatitcontrolsab/32/43240_2.png) [@HeatitControlsAB](https://community.homey.app/u/HeatitControlsAB)\ **Post date:** [May 2, 2025, 9:03am UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/32 "2025-05-02T09:03:42Z")
On the latest Beta version of the app there is a meter reset button under maintenance ---
**Author:** ![SimenK](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/simenk/32/101143_2.png) [@SimenK](https://community.homey.app/u/SimenK)\ **Post date:** [May 2, 2025, 9:22am UTC](https://community.homey.app/t/heatit-zm-single-relay/47608/33 "2025-05-02T09:22:33Z")
I have version 4.0.2. But not able to reset power meter on single relay. On z-trm3 thermostat I have the option to reset. ![IMG_1380](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/d/c/dcf0e5dd1bb1a52fc10cafb63da60ab93b9b58a9.jpeg) ![IMG_1379](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/2/4/249f9efbd08685e50f8fb516384e322c5ea67b1c.jpeg) ![IMG_1381](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/9/0/9006e57a7348827ad100be73153908c7b076eb3e.jpeg) [Previous page](https://community.homey.app/t/heatit-zm-single-relay/47608.md?page=1)