Zwave thermostat for Fujitsu Minisplit?

[TC1]

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?

[mminehan]

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.

[Wadenut]

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.

[Tomgru]

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

[fresnoboy]

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.

[Wadenut]

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.

[Tomgru]

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?