# Why is my PA-I blinking a cycle of red at all AQI levels?

**URL:** <https://community.purpleair.com/t/why-is-my-pa-i-blinking-a-cycle-of-red-at-all-aqi-levels/6591>\
**Category:** Sensors\
**Created:** [September 20, 2023, 11:12pm UTC](https://community.purpleair.com/t/why-is-my-pa-i-blinking-a-cycle-of-red-at-all-aqi-levels/6591 "2023-09-20T23:12:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![GLM](https://avatars.discourse-cdn.com/v4/letter/g/b19c9b/32.png) [@GLM](https://community.purpleair.com/u/GLM)\
**Post date:** [September 20, 2023, 11:12pm UTC](https://community.purpleair.com/t/why-is-my-pa-i-blinking-a-cycle-of-red-at-all-aqi-levels/6591/1 "2023-09-20T23:12:45Z")

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With wildfire smoke back, I have plugged in a PA-I indoor sensor I haven’t had plugged in in a while. It shows on the map just fine ([Real-Time Air Quality Map | PurpleAir](https://map.purpleair.com/1/i/o/mAQI/a10/p604800/cC0?select=65125)) and is showing AQI levels that should be in the green, like 30.

But after showing blue during the boot process, the unit seems to only show a cycle of red at different brightnesses-- about half a second at each level of red, stepping up and down through a series of brightness levels.

What does this mean? (I worry if I can trust the “green” data on the map if it’s showing red on the LED.)

Would buying a $25 replacement laser counter be likely to fix the issue?

Thanks!

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**Author:** ![ereastman](https://avatars.discourse-cdn.com/v4/letter/e/cc9497/32.png) [@ereastman](https://community.purpleair.com/u/ereastman)\
**Post date:** [November 9, 2024, 6:15pm UTC](https://community.purpleair.com/t/why-is-my-pa-i-blinking-a-cycle-of-red-at-all-aqi-levels/6591/2 "2024-11-09T18:15:18Z")

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I am also having this issue. [Here](https://map.purpleair.com/air-quality-standards-us-epa-aqi?opt=%2F1%2Flp%2Fa10%2Fp604800%2FcC0&select=82667#14.83/40.77731/-73.99318) is my PA-I sensor on the map. I’ve configured the LED to display Full Color AQI Only, but the LED just slowly blinks red no matter the air quality.

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**Author:** ![Kieran](https://sea2.discourse-cdn.com/flex020/user_avatar/community.purpleair.com/kieran/32/6220_2.png) [@Kieran](https://community.purpleair.com/u/Kieran)\
**Post date:** [November 12, 2024, 5:22pm UTC](https://community.purpleair.com/t/why-is-my-pa-i-blinking-a-cycle-of-red-at-all-aqi-levels/6591/3 "2024-11-12T17:22:20Z")

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Hi @ereastman @GLM

Please send an email to [contact@purpleair.com](mailto:contact@purpleair.com) outlining the situation. Most likely, it sounds like the LED has failed. We can discuss troubleshooting and/or replacement.