According to:
it will be the EVA-130S indoor unit.
Hereās the wiring diagram. Iām using the āOutdoor 485ā, but I see similar messages on the Wall 485, and thereās no traffic on the Aux 485.
I can start to log the messages against current states on the wall controller shortly.
Looks like you have a newer generation the PDF says BMS ICUNO-MOD (Modbus 485) is the compatible Modbus module for it. While the module I wrote is only compatible with the versions that are compatible with the ICAMIB-MOD modbus module. These two systems seem completely different. It is probably possible to reverse engineer this newer one too, but requires a lot of time and effort and access to one. Youāre better off buying the officially supported ICUNO-MOD, which is well documented along with setting it up in ESPHome with the modbus component.
Thanks for the hint. In the ICUNO-MOD install guide I found I need to set the outdoor unit to āBasic BMS + Wall Controllerā mode to enable the AUX 485 ports, Iāll have a go at decoding these messages from the AUX ports and seeing if we can have a similar ESP32 based unit, otherwise Iāll go down the ICUNO-MOD Modbus route.
This is what I ended up doing as i tried to decode it with just the ESP32 and it was very difficult. I ended up buying the ICUNO-MOD board and using the ESP32 as Modbus bridge to HA.
I am now having a problem though and not sure if anyone else has seen this with any Actron systems. When I turn the system on it wont change its status to run. The set point temp will be above the current temperature and will be on heat mode but the system wont start the compressor and have ārunā on the control panel. Not sure if its an issue now iāve installed the BMS board or the main unit fault. This is also an intermittent issue and restarting the unit at the breaker gets it working again. Any tips would be appreciate, the system is only 6months old.
edit: turns out there is some bug but by running the action climate on after selecting the mode it will then start running as normal.
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Hi Everyone. I am getting in deep in this HA stuff and I need a little help with the Actron Air integration please. I have a NA111M RS485-Ethernet converter that I need to set up to talk to the ICUNO-MOD board in the outdoor unit. I havenāt received the board yet but I am working through getting the Ethernet converter configured, in preparation for further works when I received the ICUNO-MOD.
I have powered up the converter and accessed the web interface page. I was hoping someone would be able to point me at the correct settings for this bit of hardware. I have made some initial guesses, but a knowledgeable set of eyes over it would be appreciated 
.
I will be changing the IP address to something more in keeping with my network when I write the config info to the converter.
Thanks also for everyone who have contributed to the integration too. Appreciated!
TIA 
Hi @a.barkho21 any chance you know what the white data connector is called (ie specs so i can try buy one) for the data on the controller board?
cheers!
Looks like JST XHP 
I havenāt looked at one āin the fleshā on an Actron Air, but the images I have seen certainly look like JST XH series. If they are 2.5mm pitch it will be just about certain. I frequently use them for other things.
I can confirm tomorrow when I pick up my ICUNO-MOD board from the aircon place 
.
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Trying to look this up to my Actron Classic indoor unit (AMIB-PEC) which is supposed to be compatible with ICAMIB-MOD, using the rs485 module last posted by awulf (https://www.aliexpress.com/item/1005006254420328.html) but getting āReceiving Data: NOā.
I see that if I have the esp/rs485 module powered off there is no voltage across the A/B pins on the Actron indoor controller. Is this normal? I was expecting 3-5V between these pins?
With the esp32/rs485 powered up and disconnected I get ~3.3V across A/B. With it connected to the Actron I get ~2.6V.
Iām wondering if something is wrong with my Actron module or if having the 4-zone module somehow disables the rs485. 
Not really keen on spending close to $1k on the ICAMIB-MOD and 8 zone controller module.
Looking for some help before I call Actron support.
I have a USR-TCP232-304 hooked up to an ICUNO-MOD in an Aires system with an LR7 controller.
I can read all the settings and write to most registers. However, I canāt reliably turn my zones on and off using the modbus. If I do, I see the value of the register change, then it flicks back to its previous state. Iāve managed to change it a few times by switching different zones on/off in succession quickly, but itās not something I can repeat.
I should also mention that when I turn a zone on or off, it syncs with the LR7 panel momentarily before then reverting to itās previous state.
Also wouldnāt mind confirming how fast otherās modbus communications are using the ICUNO card. Iām finding updating other registers such as the temp usually takes a few seconds to come through on the LR7 unit. Iām assuming thatās normal.
Confirmed. JST XH series connectors.
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Further to my problems above, Iāve also found that if I try and power the system up by selecting a mode (ie. Heat), it defaults the mode to Cold. Also when I turn the system off, and then turn it on again, it defaults the mode to Cold. So to turn the system on and return it to itās former state, I have to power the system up, wait a few seconds, and then select Heat.
Iām OK to work around this if this is how the modbus should work. However, this along with the zone issues make it seem like thereās something else going wrong here. My LR7 and Modbus donāt seem to be syncing properly with certain logic overriding things.
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To close this out and or future reference, Actron have found that all of this was due to a software bug. They are issuing an update and will come and patch my system.
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For those using a device that depends on the Actron Connect platform, I have just released a custom integration that does all the heavy lifting for you: Actron Connect integration - Share your Projects! / Custom Integrations - Home Assistant Community
It is compatible with Actron Connect-enabled devices, which, as far as I know, are the following models:
- Actron Standard Classic
- Actron ESP Plus
- Actron ESP Ultima
- Actron Platinum Plus
- Actron Platinum Ultima
It is NOT compatible with Actron Neo or QUE devices.
Let me know what you think.
I had a similar issue I also found that in some situations ifni turned the system on by changing the mode it wouldnāt actually turn the compressor on. How did you go about getting them to do a software update. What version were you on and update to? Also is the update to the icuno mod board or the aircon board?
They have just done the firmware update for me but there are still going issues that they will work on. At least they are aware and trying to work on firmware updates. I also heard they canāt do ota updates for neo controllers due to a lack of memory. It needs to be done in person until they figure out a work around.
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Thanks for sharing your findings, b4igo. Did you manage to sort out the issue? Your observations match mine exactly.
On the indoor boardās J4 connector, both RS-485 A and B measure about 2.2V relative to GND, with essentially 0V differential between them when they are not wired. This is likely because of the boardās internal biasing, so it may be normal. But, it does indicate that no RS-485 traffic is present on J4.
My ESP32 board has been tested and works fine with other RS-485 devices, with or without a termination resistor. It successfully receives RS-485 traffic from those devices, so the ESP32 setup is not the issue.
Iām starting to think J4 is not part of the main RS-485 bus used by all the air-conditioning components. Instead, it seems to be a separate RS-485 interface used only between the indoor board and the ICAMIB-MOD. If thatās the case, it may not be possible to sniff any meaningful traffic from J4. The ICAMIB-MOD likely needs to send some initial command to activate or bridge through to the main RS-485 network.
My system is an SRG131E-0100 with the AMIB-PEC (AMIB-7) indoor board, and the manufacturer confirmed that this indoor board does support the ICAMIB-MOD.