# ITC-308 Not Recognizing Temp Differential

**URL:** <https://community.inkbird.com/t/itc-308-not-recognizing-temp-differential/167116>\
**Category:** Questions & Answers\
**Created:** [April 18, 2026, 4:38pm UTC](https://community.inkbird.com/t/itc-308-not-recognizing-temp-differential/167116 "2026-04-18T16:38:53Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**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:** [May 9, 2026, 4:05am UTC](https://community.inkbird.com/t/itc-308-not-recognizing-temp-differential/167116/2 "2026-05-09T04:05:29Z")

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Hello,  
Please note that the ITC-308-WIFI has a special mode, and the phenomenon described is highly likely to have triggered this mode.

Please refer to this post:

> [@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…

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