# \[APP\]\[Pro\] 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:** 157

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**Author:** ![mbnn](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/mbnn/32/36655_2.png) [@mbnn](https://community.homey.app/u/mbnn)\
**Post date:** [December 17, 2025, 7:06am UTC](https://community.homey.app/t/app-pro-mitsubishi-wf-rac-cooling-heating-and-ventilation/77116/157 "2025-12-17T07:06:19Z")

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Nothing to do with slower networks… the mitsubishi WF RAC module is simply the worst I’ve ever worked with (and im in IT) 😀 It keeps connecting, disconnecting (if I look at the logs of the network) every couple of minutes, does not matter which WiFi settings you use (2.4, 5ghz, static ip or not, advanced settings etc). Here a screenshot of the network logs (and this wifi network is set to 2.4Ghz only, and close to the Airco units):

Reply van Mitsubishi over WF RAC: ”_MHI QA have responded as follows:_

> _**The connection condition between the router and WF-RAC is normal as the specification of the interface (WF-RAC) doing connect / disconnect every one hour.**_

> _ **This is because to avoid too much cache by the communication and this operation should not affect the application.’** _

 ![Screenshot 2025-12-17 at 08.11.10](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/9/2/92f8ebd731e643ed5b8d4ac2a658f3a727838a36.png)

Everything in my house is UniFi AP 7 Pro XG with gigabit speeds and 10gb connections on LAN. When I compare this with Daikin (which I had in my previous house), that was 10x better, but yeah it is what it is I guess 😀 Thanks for the work on this plugin!

Im considering throwing out the WF RAC in the future and replace it with this: [https://clima.protoart.net/shop/climacontrol-mitsubishi-heavy-industries-airtoair/?v=1a13105b7e4e](https://clima.protoart.net/shop/climacontrol-mitsubishi-heavy-industries-airtoair/?v=1a13105b7e4e) as mentioned in: [https://gathering.tweakers.net/forum/list\_messages/2233498](https://gathering.tweakers.net/forum/list_messages/2233498)

The current update: 1.3.4 still times out the Airco’s in homey now. 1.3.2 was working fine.

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