# ComfoAir Connection Closed

**URL:** <https://discourse.nodered.org/t/comfoair-connection-closed/79205>\
**Category:** General\
**Created:** [14 June 2023 15:01 UTC](https://discourse.nodered.org/t/comfoair-connection-closed/79205 "2023-06-14T15:01:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mark.Resting](https://avatars.discourse-cdn.com/v4/letter/m/f14d63/32.png) [@Mark.Resting](https://discourse.nodered.org/u/Mark.Resting)\
**Post date:** [14 June 2023 15:01 UTC](https://discourse.nodered.org/t/comfoair-connection-closed/79205/1 "2023-06-14T15:01:35Z")

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Hi all,  
I try to use the ConfoAir imlementation "node-red-contrib-comfoair V0.0.8".

It is working fine for some time, but after a while i'm getting this error:  
"comfoair [/dev/serial/by-id/usb-Prolific\_Technology\_Inc.\_USB-Serial\_Controller\_D-if00-port0] runCommand(getFanState): Connection closed. Please open Connection first."

Can someone help me on this?  
If you need more detailed information please let me know!

The envirement is an Rasberry PI with node Red installed.

Thx a lot up front!  
Mark

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [13 August 2023 15:02 UTC](https://discourse.nodered.org/t/comfoair-connection-closed/79205/2 "2023-08-13T15:02:36Z")

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