# Itc-306t displays tE error

**URL:** <https://community.inkbird.com/t/itc-306t-displays-te-error/166356>\
**Category:** Questions & Answers\
**Tags:** smart-controller\
**Created:** [January 8, 2025, 6:21pm UTC](https://community.inkbird.com/t/itc-306t-displays-te-error/166356 "2025-01-08T18:21:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sebrame](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@sebrame](https://community.inkbird.com/u/sebrame)\
**Post date:** [January 8, 2025, 6:21pm UTC](https://community.inkbird.com/t/itc-306t-displays-te-error/166356/1 "2025-01-08T18:21:26Z")

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I have 5 itc-306t units. Every one of them powers up in tE error mode with beeping. After entering set mode the up (increase) and down (decrease) keys do not work. The probes are clean as can be. Plugging in and out has no effect. Is it possible that all of them have corrupted internal parts due to age? They have been stored in a cool, dry environment.

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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:** [January 9, 2025, 8:56am UTC](https://community.inkbird.com/t/itc-306t-displays-te-error/166356/2 "2025-01-09T08:56:55Z")

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Hello,  
Please refer to this troubleshooting of the manual:

 ![image](https://canada1.discourse-cdn.com/flex031/uploads/inkbird1/original/2X/7/70eb00f82eb3eba18d57ba4dd40b4c2bef334994.png)

After re-adjusting, does it work?