Best ZWave Device for a Fujitsu Mini Split?

Hi Hubitat friends,

I want to connect my Fujitsu Mini Split to my Zwave system, and I don't know if it's possible. My research seems to be incoherent because I can't find any information on it.

I'm wondering if the Zooz Zen17 would work?
If anyone else has synced a Fujitsu minisplit to their ZWave system your advice would be appreciated. :smile:

Thanks in advance

My question is what are you trying to accomplish? Why Z-wave? What do you hope that Z-wave can do for your mini-split? Are you looking for temperature control, fan control, cutting the power to the unit, or what? Do you have a local thermostat, or just the remote control?

What would a Zen17 do theoretically? In other words, what are you trying to hook the Zen17 to, and what function would it control? What made you select the Zen17?

I think part of your problem searching for a device is that you don't know what you are trying to accomplish. For example, I can't think of what the Zen relay would be hooked up to that would make something happen on something like a mini-split.

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Those are all fair questions, let me try to clarify. My system is all Zwave currently so that is why I specified that.

At a minimum, I'd love to turn it on and off remotely when I'm heading home from being out of the house.

At a maximum, I'd love to control the entire unit remotely. However, I'm not sure if that is fully possible. Including temp control, fan speed, AC vs heat, etc...

Does that help clarify or should I try to describe more of my system layout?
I'm still new to building out my smart house system so, sorry if this is incomplete information.

Do you want a local control as well, in other words a thermostat like a normal furnace or boiler? Or would you want to use just your phone/Alexa type control?

Do you care if the Hubitat displays what is going on, or would it be good enough to just control the machine blindly with no feedback? There are devices (IR blaster) available that simulate the remote control that have drivers in Hubitat. But these don't have any feedback to the hub whether anything really happened when you spit out that IR command.

Is your mini-split currently smart in any way? With my Midea they have a phone app and cloud control, it can tie into my Hubitat with an integration someone wrote. I had to buy a Wifi dongle that plugs into the mini-split. Not sure what Fujitsu has, or whether that could be integrated with Hubitat, but it might integrate with IFTTT or even Alexa to get it into Hubitat without much additional work.

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I am using a Z-Wave Remotec ZXT-600 to control my mini-split. It works great. IR is the only way I could figure. I use it with presence detection.

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Had to look it up. Cool device.

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I’ll second that - nice! Not sure there is a device driver available for it on Hubitat though…. If you end up using it, please let us know how well it works.

I am controlling my Fujitsu Mini-split with the Broadlink Pro.

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@a.visionaree In order to use a z-wave, zigbee, or dumb thermostat with your system, you need a Fujitsu UTY-TTRX or UTY-TTRXZ1 converter for EACH head. Once they're installed, you can install any thermostat. It will allow normal functionality. But for specialty things like adjusting the louvers you will still need the remote.

shopping

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There is. I have one as well as a 320. Converters for your exact minisplit are better though,. There is also the new 800 model now.

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Yes, the remotec has a driver and integrates well. The broad Comm IR would work as well. The advantage of the remote tech is that it has preprogrammed setting commands. The way the mini splits work with the remotes is that IR command contains all of the unit settings like temperature, mode, fan, louver, etc., so with the broad Comm, you would have to save a IR command for each temperature degree you want to use. All of these commands are already programmed in the remote tech.

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Have several of these, they’re a pain to connect up and configure, but I love being able to use any old zigbee thermostats to control the indoor units via Hubitat (of course any thermostat that can be integrated with Hubitat is an option regardless of how exactly it connects).

The IR-based solutions generally work, there’s built-in drivers for the Remotec devices, and community support for Broadcoms. But you can never actually get confirmation a command was received, nor can you get any status updates from the a/c.

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Hence one of my questions for @a.visionaree above.

Personally, I think this is a much nicer solution. But the more expensive one. You get both local control of a device that looks normal, plus you can add a thermostat of your choice that integrates with Hubitat.

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Yes I'd like to control local and remotely on my phone.

I'd like to see a display of what is happening but not necessary. Basic feedback of on/off would be sufficient if that were the only option available.

My mini-split is not smart at all.

Is there a library to see if it would work with my unit at all? Or is it just buy and test to find out?

How long have you had this?
It works well?
I don't know where the IR sensor is on the device so I'd need to determine that before diving into this solution.

Yes, I will look into the converter solution since it's Fujitsu-built.

Using that is really the only way to get any feedback locally or remotely. As to your question about the act, there is a pre programmed list you can start with then add other custom commands as you want.

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I’ve been using this setup for years now. Not sure how many, over 5 I think. I started using it with an older Broadlink driver that had been developed then, and switched over to @tomw’s driver when it became available. I still use an older (no longer published) app to control the mini-split through the Broadlink driver.

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I have been using the ZXT-600 and it seems to work. The problem with the units I have is there no local display to confirm command.

I see definitions for FUJITSU and FUJITSU GENERAL - anyone have an idea which one they use?

My mini-splits are ASU7RLF1 - has anyone had experience with that model?

Much thanks.

@user5411 you want to get the Fujitsu UTY-TTRXZ1 24V Thermostat Interface then use whatever thermostat you like. I recommend the Honeywell t6 z-wave pro thermostat.