# Arctic Liquid Cooler III Pump Cap has 1 red led always on

**URL:** <https://forum.signalrgb.com/t/arctic-liquid-cooler-iii-pump-cap-has-1-red-led-always-on/3983>\
**Category:** Support\
**Created:** [February 22, 2025, 4:04pm UTC](https://forum.signalrgb.com/t/arctic-liquid-cooler-iii-pump-cap-has-1-red-led-always-on/3983 "2025-02-22T16:04:12Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Mobidoy](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.signalrgb.com/mobidoy/32/1286_2.png) [@Mobidoy](https://forum.signalrgb.com/u/Mobidoy)\
**Post date:** [February 22, 2025, 4:04pm UTC](https://forum.signalrgb.com/t/arctic-liquid-cooler-iii-pump-cap-has-1-red-led-always-on/3983/1 "2025-02-22T16:04:12Z")

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Hello,

I have a led that always stays red even if I paint it black. All other leds are ok.

I have tried with the Arctic Liquid Cooler III device in Signal RGB and also made a custom 12 LED string and it always behave that way.

If I close Signal RGB, the led will turn on, If I use another software ( open RGB ), I dont have that issue.

Any hints ?