# What does the heating hysteresis setting do on Inkbird ITC-308 WIFI **URL:** \ **Category:** Questions & Answers\ **Created:** [December 15, 2022, 3:26pm UTC](https://community.inkbird.com/t/what-does-the-heating-hysteresis-setting-do-on-inkbird-itc-308-wifi/2879 "2022-12-15T15:26:41Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![graybale65](https://avatars.discourse-cdn.com/v4/letter/g/cab0a1/32.png) [@graybale65](https://community.inkbird.com/u/graybale65)\ **Post date:** [December 15, 2022, 3:26pm UTC](https://community.inkbird.com/t/what-does-the-heating-hysteresis-setting-do-on-inkbird-itc-308-wifi/2879/1 "2022-12-15T15:26:42Z")
What does the heating hysteresis setting do on Inkbird ITC-308 WIFI, likewise what does the cooling back temperature setting do. On the 3 Inkbird ITC-308 WIFI devices I have, one of them I can set both heating and cooling to 0.5 deg C. But the other 2 devices seems to accept 0.5 deg C as the setting, but it changes both back to 1 deg C. Why is there a 0.3 setting, when I cannot seem to select it? Any ideas please. ---
**Author:** ![Tania](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.inkbird.com/tania/32/88_2.png) [@Tania](https://community.inkbird.com/u/Tania)\ **Post date:** [December 16, 2022, 3:35am UTC](https://community.inkbird.com/t/what-does-the-heating-hysteresis-setting-do-on-inkbird-itc-308-wifi/2879/2 "2022-12-16T03:35:52Z")
Hello, For more information on how the ITC-308-WIFI works, please refer to. > [@Q&A: How does ITC-308WIFI work?](https://community.inkbird.com/t/q-a-how-does-itc-308wifi-work/151): > > ITC-308WIFI has a special temperature mode and a normal temperature mode. The trigger conditions for the special temperature mode are: Enter the setting mode through the SET key then exit. Enter the setting mode through the app then exit. In the special temperature mode, ITC-308WIFI will ignore the settings of HD (Heating hysteresis temperature) and CD (Cooling back temperature) and turn on the heating/cooling output. It will not enter the normal mode until the temperature reaches the SV tar… If its settings cannot be saved, please ensure that the ITC-308-WIFI remains connected to the network. Please provide the app you are using and a video of the problem to [support@inkbird.com](mailto:support@inkbird.com). ---
**Author:** ![graybale65](https://avatars.discourse-cdn.com/v4/letter/g/cab0a1/32.png) [@graybale65](https://community.inkbird.com/u/graybale65)\ **Post date:** [December 16, 2022, 10:17am UTC](https://community.inkbird.com/t/what-does-the-heating-hysteresis-setting-do-on-inkbird-itc-308-wifi/2879/3 "2022-12-16T10:17:39Z")
For some reason I have been using Inkbird Smart v 1.0.7 Just installed Inkbird Pro v3.3.14 Still have the same problem 1 device can store 0.3 as the hysterisis, the other 2 devices will only store 1 as the hysterisis It seems I am having to leave it running for at least a day, for the process value to stabilise, i am now getting plus and minus 1.5 deg C (3 deg C total) ---
**Author:** ![Tania](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.inkbird.com/tania/32/88_2.png) [@Tania](https://community.inkbird.com/u/Tania)\ **Post date:** [December 19, 2022, 6:28am UTC](https://community.inkbird.com/t/what-does-the-heating-hysteresis-setting-do-on-inkbird-itc-308-wifi/2879/4 "2022-12-19T06:28:53Z")
Please use the INKBIRD app, which is based on the Inkbird smart app and the Inkbird pro app upgrade. If it still has problems, please provide the device ID of the ITC-308-WIFI (it can be viewed via the app - ITC-308-WIFI - more in the top right corner) and a video of the problem to [support@inkbird.com](mailto:support@inkbird.com). ---
**Author:** ![graybale65](https://avatars.discourse-cdn.com/v4/letter/g/cab0a1/32.png) [@graybale65](https://community.inkbird.com/u/graybale65)\ **Post date:** [December 19, 2022, 9:10am UTC](https://community.inkbird.com/t/what-does-the-heating-hysteresis-setting-do-on-inkbird-itc-308-wifi/2879/5 "2022-12-19T09:10:06Z")
I have found the answer to my problem. When you have changed the settings, it does change the settings ‘live’. So I have been using the back button on android (bottom right). If you select the back button on app (top left) it saves the changes. still only getting plus and minus 1.5 deg C (3 deg C total)