# Venting a GEM (T5) Controller

**URL:** <https://community.electricforum.com/t/venting-a-gem-t5-controller/27182>\
**Category:** GEM Forum\
**Created:** [November 21, 2023, 4:54pm UTC](https://community.electricforum.com/t/venting-a-gem-t5-controller/27182 "2023-11-21T16:54:03Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![saw9682](https://avatars.discourse-cdn.com/v4/letter/s/e9bcb4/32.png) [@saw9682](https://community.electricforum.com/u/saw9682)\
**Post date:** [December 16, 2023, 4:42pm UTC](https://community.electricforum.com/t/venting-a-gem-t5-controller/27182/8 "2023-12-16T16:42:24Z")

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> [@New heat sink and which fan](https://community.electricforum.com/t/new-heat-sink-and-which-fan/16715/1):
>
> Been getting a constant error code 41. Got interested in the “cooling” post a bit ago. Went on line and found a company…heatsinkusa…that sells heat sinks by the inch with no minimum. They have one that fits the t3 controller like a glove, 7.280 wide and ordered 10” long. $31.00 plus shipping. Sweet! Just for grins I’m looking to add a fan…but…have no background or source to buy from. Could someone please walk me thru where and which fan to buy. Thanks.

Great article from the archives.  
I did the same on a 2005 e4 with a T3 that started throwing 41 error code after upgrading motor and power except without the fan and have had no trouble since.

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