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    Zwave thermostat for Fujitsu Minisplit?

    I have a house that came with a Fujistu minisplit system... single compressor outside serving two AC zones inside, each with it's own hardwired thermostat. (no wifi module, etc).

    Apparently, the little battery backup in each tstat is dead, so every time the power flickers i have to reset them. And while this amazes me, they are apparently out of warranty and the only repair is to replace. They are recommending one of their own tstats - no surprisingly at about $225 each.

    My house is also dual zone heat pump... of which I use Ecobees to automate into my HA system.

    Figured if i have to replace the Fujitsu tstats, especially at that price, i might as well look for something I can integrate. I'm looking into the Fujitsu wifi module (additional $125 each) and/or possible an IR remote.... but the costs are adding up with that solution.

    Any ideas? Is there a zwave capable tstat that works with Minisplits?

    #2
    I've just had an installer give me an estimate on a new Fujitsu mini-split. Sounds like your unit already has the optional thermostat adaptor; it was an option for me. I've ordered it. From looking at the manual, I'll be able to use a honeywell ZWSTAT which has all of the standard dry contact outputs. I'd expect yours is a similar case. Look at the wiring of the thermostat; that should tell you what you have now.
    Real courage is not securing your Wi-Fi network.

    Comment


      #3
      There are a couple homebridge projects that ccan control fujitsu minisplits. https://www.npmjs.com/search?q=Fujitsu%20mini

      You may be able to bridge control into HS using the homebridge, or with MQTT.

      Comment


        #4
        Originally posted by Wadenut View Post
        I've just had an installer give me an estimate on a new Fujitsu mini-split. Sounds like your unit already has the optional thermostat adaptor; it was an option for me. I've ordered it. From looking at the manual, I'll be able to use a honeywell ZWSTAT which has all of the standard dry contact outputs. I'd expect yours is a similar case. Look at the wiring of the thermostat; that should tell you what you have now.
        Let me know how it goes! I don't have that adapter...

        Sent from my SM-G975U using Tapatalk

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          #5
          The thermostat adaptor is model UTY-TTRX (my HP is a Fujitsu Halcyon model). You'd need to check that this is compatible with your HP. I've downloaded the manual for it but the converter itself is still on order. From looking at the manual, it connects to the indoor unit using two or three conductors, and converts signals to all of the required thermostat functions (heat, Cool, Fan, etc.). The converter is located remotely from the heat pump itself, and requires a 24AC supply.
          Looking at the situation here, I think I'll be using the heat pump mainly for cooling in summer so I'll likely use the supply from the propane furnace and run C, Y, Y1 & Y2 from the converter there to the existing thermostat. Originally I'd thought I'd require a second, separate thermostat which seems not to be the case.
          The installer told me that even with the TStat connected, I'll still have the use of the IR remote and Wi-Fi functions.
          Real courage is not securing your Wi-Fi network.

          Comment


            #6
            Tomgru Have you had a look at the Intesis options? I use it with our Fujitsu system and it works well. It's hardwired to the exisiting wall controller and allows full control including 2 way communication, i.e. If you use the wall controller to make changes the Intesis system sends the updates to HS, unlike IR which is only one way.

            https://www.intesis.com/products/ac-...jitsu-gateways

            ​​​​​The HS mcsMQTT plugin or using wmp2mqtt works with the Intesis boxes.

            I used to use the zwave ZXT-120 and ZXT-600. But these a buggy and zwave based which I have found to be unreliable. And as they are IR based any changes you make to the settings using the wall controller or remote (mode, setpoint, fan speed and etc) are not detected so HS has no idea these things have changed.
            iCore5 Win 10 Pro x64 SSD

            HS3 Pro Edition 3.0.0.435 Windows

            BLOccupied:,Device History:,Yamaha:,UltraMon3:,mcsXap:,Restart:,UltraNetatmo3:, UltraM1G3:,Ultra1Wire3:,BLBackup:,Harmony Hub:,DoorBird:,UltraECM3:,Nanoleaf 3P:,UltraRachio3:,Z-Wave:,SDJ-Health:,BLGarbage:,Blue-Iris:,Chromecast:,Pushover 3P:,EasyTrigger:

            Comment


              #7
              Originally posted by mminehan View Post
              Tomgru Have you had a look at the Intesis options? I use it with our Fujitsu system and it works well. It's hardwired to the exisiting wall controller and allows full control including 2 way communication, i.e. If you use the wall controller to make changes the Intesis system sends the updates to HS, unlike IR which is only one way.

              https://www.intesis.com/products/ac-...jitsu-gateways

              ​​​​​The HS mcsMQTT plugin or using wmp2mqtt works with the Intesis boxes.

              I used to use the zwave ZXT-120 and ZXT-600. But these a buggy and zwave based which I have found to be unreliable. And as they are IR based any changes you make to the settings using the wall controller or remote (mode, setpoint, fan speed and etc) are not detected so HS has no idea these things have changed.
              mminehan this is a fantastic find! I have a large Fujitsu Halcyon compressor with 4 head units and I've been struggling trying to decide how to control them. Fujitsu's official solution is using their cloud service for a gateway, which I hate.

              Which unit did you buy? How much did it cost?

              Comment


                #8
                TC1 Yes this has been a much better solution than any I have found in the past. But they are not cheap. Mine cost around $200 USD.

                Use their compatability tool (https://compatibility.intesis.com) to see which unit to get or if your AC is even compatible. They tend to have two versions of each type: one for local access and one for cloud access. Also it appears there are some that work on only one head unit and are hard wired to the wall controller (like I installed), and some that are wired to the outdoor unit and can control multiple head units. So make sure you do your homework. Their installation and user documents are pretty good.

                Provided the unit you get speaks 'WMP' it should work with either wmp2mqtt (https://github.com/jpg0/wmp2mqtt) or Michael's mcsMQTT plugin which has a specific WMP tab called "Daikin" on the TCP page. With the mcsMQTT plugin for HS you just enter the IP address of the Intesis unit once you have configured it. The mcsMQTT plugin then creates all the HS devices to control the AC unit (mode, settemp, ambient temp, outdoor temp, fan speed, louvre direction etc).

                I am still in the process of setting the HS devices to act as a traditional HS thermostat type operaion. I have done this with our underfloor heating controls so it's not too hard.

                But please do your home work before you buy to make sure you get the right unit, unless you find a retailer who is happy for you to return the unit if you purchase the wrong one.
                iCore5 Win 10 Pro x64 SSD

                HS3 Pro Edition 3.0.0.435 Windows

                BLOccupied:,Device History:,Yamaha:,UltraMon3:,mcsXap:,Restart:,UltraNetatmo3:, UltraM1G3:,Ultra1Wire3:,BLBackup:,Harmony Hub:,DoorBird:,UltraECM3:,Nanoleaf 3P:,UltraRachio3:,Z-Wave:,SDJ-Health:,BLGarbage:,Blue-Iris:,Chromecast:,Pushover 3P:,EasyTrigger:

                Comment


                  #9
                  mminehan it seems here in the USA where I am, the only distributor listed for me on their website is the company itself, so I guess I'll be making an inquiry to them. Thanks for your insights and experience thus far.

                  Comment


                    #10
                    Have you looked at these guys: INWMPFGL001R000 by Intesis (engenuity.com)

                    I'm in New Zealand but from the looks of it these guys are in Arizona?
                    iCore5 Win 10 Pro x64 SSD

                    HS3 Pro Edition 3.0.0.435 Windows

                    BLOccupied:,Device History:,Yamaha:,UltraMon3:,mcsXap:,Restart:,UltraNetatmo3:, UltraM1G3:,Ultra1Wire3:,BLBackup:,Harmony Hub:,DoorBird:,UltraECM3:,Nanoleaf 3P:,UltraRachio3:,Z-Wave:,SDJ-Health:,BLGarbage:,Blue-Iris:,Chromecast:,Pushover 3P:,EasyTrigger:

                    Comment


                      #11
                      I've had good luck using Sensibo to remote-control two different splits plus a dehumidfier in my garage (each requires its own Sensibo). They log onto 2.4gHz on your router and use an app on your phone. One of my splits was something I bought around 2005 abroad (a Soleus brand) and installed myself. Sensibo had never heard of them, but they worked with me to develop the signals and within a couple of days had it solved, it works just fine for it as well as a Fujitsu split I have. If you don't have a functioning thermostat I doubt Sensibo would help, but this is a just in case post... HTH

                      Comment


                        #12
                        The limitation of Sensibo and other similar IR solutions is that they are one-way communication, so you never truly know the state of the device you are controlling.

                        Comment


                          #13
                          I have a really old Spit system. It had no network or automation capability. ....or so I thought. It was the last thing in the house I could not control with the press of a button or a verbal command. Someone on here mentioned a Remotec controller and i got one. Pretty simple to use and it just works. I THINK I have had it for about 3 years now. The IR is powerful enough that the device can be put out of the way. I may have changed the batteries once since I got it..... It does not do EVERY command that the remote does, but does do all the things I would want to do remotely. It has never not worked...

                          https://www.remotec.com.hk/zxt600
                          .

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