# \[APP\]\[Pro\] Mitsubishi WF-RAC - Cooling, heating and ventilation

**URL:** <https://community.homey.app/t/app-pro-mitsubishi-wf-rac-cooling-heating-and-ventilation/77116>\
**Category:** Apps\
**Tags:** app, official, homey-pro\
**Created:** [March 4, 2023, 12:54am UTC](https://community.homey.app/t/app-pro-mitsubishi-wf-rac-cooling-heating-and-ventilation/77116 "2023-03-04T00:54:28Z")\
**Posts on this page:** 1\
**Showing post:** 124

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**Author:** ![evdpol](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/evdpol/32/26730_2.png) [@evdpol](https://community.homey.app/u/evdpol)\
**Post date:** [July 8, 2025, 1:28am UTC](https://community.homey.app/t/app-pro-mitsubishi-wf-rac-cooling-heating-and-ventilation/77116/124 "2025-07-08T01:28:00Z")

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> [@Marco\_van\_Barneveld](#):
>
> I notice one strange thing. In the MHI app only 1 smarytphone is connected to de Airco unit, and that is the MHI app itself.  
> That is strage, somehow Homey is kicked out as a controlling device?

What makes you think that Homey is “kicked out” as a controlling device?  
I’ve never had _that_ problem before tbh.

> [@Marco\_van\_Barneveld](#):
>
> Perhaps there is a way to make it possible reconnect/repair the connection WITHOUT having to delete the devices?

How long did you wait before you re-create the devices?  
My connections go down also sometimes, but they will restore eventually.  
Did you also try to restart the app in Homey?

Furthermore, I can see a LOT of these lines in your error report (at least every 5 minutes for 1 specific airco):

` [Device:xxxxxxx] Last seen changed 192.168.1.68:51443`

You need to check your network setup. It always gets the same IP address, but that is looking weird to me.

And every **30 minutes** you get this error (for 1 specific airco’s):  
`[Device:xxxxxxx] [Sync] Error: error.connection`

So, 1 airco is “rediscovered” all the time, and 2/3 don’t, but have connection errors.

I found this [interesting topic](https://community.ui.com/questions/AC-Units-IOT-disconnecting-from-UniFi-Wi-Fi-at-regular-hourly-Intervals/821cd3e4-46a0-4d6b-8fd0-8d5cf182b90f?page=1) which proves that WF-RAC devices will **terminate the network connection to the router every hour!!**

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_[View the full topic](https://community.homey.app/t/app-pro-mitsubishi-wf-rac-cooling-heating-and-ventilation/77116)._