# Fan SHIM

**URL:** <https://forums.pimoroni.com/t/fan-shim/12759>\
**Category:** Support\
**Created:** [January 15, 2020, 5:55pm UTC](https://forums.pimoroni.com/t/fan-shim/12759 "2020-01-15T17:55:46Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![lou](https://avatars.discourse-cdn.com/v4/letter/l/ea666f/32.png) [@lou](https://forums.pimoroni.com/u/lou)\
**Post date:** [January 15, 2020, 5:55pm UTC](https://forums.pimoroni.com/t/fan-shim/12759/1 "2020-01-15T17:55:46Z")

</div>

Need help with my newly installed Fan SHIM on my RPi 4; it runs constantly as soon as I apply power, no LEDs. LOU

---

<div class="post-metadata">

**Author:** ![neilman](https://avatars.discourse-cdn.com/v4/letter/n/6de8d8/32.png) [@neilman](https://forums.pimoroni.com/u/neilman)\
**Post date:** [January 15, 2020, 6:42pm UTC](https://forums.pimoroni.com/t/fan-shim/12759/2 "2020-01-15T18:42:58Z")

</div>

Umm that’s the default “out of the box” operation of the shim - you need to install the software to control the fan based on CPU temperature and to control the LED.

Have you installed the software?

> **[Fan SHIM – Active Cooling for Raspberry Pi 4 – Pimoroni Store](https://shop.pimoroni.com/products/fan-shim)**
>
> Make your Raspberry Pi 4 seriously cool with Fan SHIM! This 30mm no-solder, controllable CPU fan with RGB LED and tactile switch will give your Raspberry Pi significantly better thermal performance. It's whisper-quiet too!

---

<div class="post-metadata">

**Author:** ![lou](https://avatars.discourse-cdn.com/v4/letter/l/ea666f/32.png) [@lou](https://forums.pimoroni.com/u/lou)\
**Post date:** [January 15, 2020, 7:23pm UTC](https://forums.pimoroni.com/t/fan-shim/12759/3 "2020-01-15T19:23:38Z")

</div>

I thought it was pre-installed, so I attempted to modify the on/off/delay parameters - without any results. I’ll go back and install

---

<div class="post-metadata">

**Author:** ![lou](https://avatars.discourse-cdn.com/v4/letter/l/ea666f/32.png) [@lou](https://forums.pimoroni.com/u/lou)\
**Post date:** [January 15, 2020, 9:27pm UTC](https://forums.pimoroni.com/t/fan-shim/12759/4 "2020-01-15T21:27:04Z")

</div>

Thanks, I fixed it. May have to go back and change some settings later, but it works!