# Working Lights not coming on on 306t **URL:** \ **Category:** Questions & Answers\ **Created:** [September 3, 2023, 6:58pm UTC](https://community.inkbird.com/t/working-lights-not-coming-on-on-306t/83008 "2023-09-03T18:58:02Z")\ **Posts on this page:** 1\ **Showing post:** 2
**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:** [September 5, 2023, 9:09am UTC](https://community.inkbird.com/t/working-lights-not-coming-on-on-306t/83008/2 "2023-09-05T09:09:46Z")
Hello, Please check if the ITC-306T is set correctly? Has the current temperature reached the heating on value (TS-DS)? Please refer to: > [@Q: How to set ITC-306T?](https://community.inkbird.com/t/q-how-to-set-itc-306t/82): > > A: Here are some tips for ITC-306T temperature controller settings: ‘PV’ is current temperature ‘SV’ is setting temperature ‘TS’ is your target value ‘DS’ is the differential value ‘CA’ is the calibrated value ‘CF’ is the unit of temperature (°C or °F) ‘TR’ is time setting ( 0:off / 1:on ) There will be 2 situations when you use this thermostat. If you only need to control a same temperature range the whole day. For example, you need to keep the temperature within 22°C~25°C, then set th… --- _[View the full topic](https://community.inkbird.com/t/working-lights-not-coming-on-on-306t/83008)._