Replies: 8 comments 33 replies
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You can set You can also disable the inverted tx and rx attempts and disable s21 in the settings to stop it trying anything else but the straight X50 protocol. (and then power cycling it all).
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No luck unfortunately. I also tried rewiring the harness just in case and power cycling a few times with the suggestions above. Not sure if anyone has experience connecting the wrong X50A pins (if that's a possible cause). I made the assumption JST socket orientation (therefore the pinouts) would match between models, so my harness is connected like this: ---X50A--- (comparing to the eBay image linked above) In your code, do you just pass along the raw message from the unit, or is 15EA a parsed response? Whilst I am getting an Rx response, it's completely unresponsive to the Tx message: Rx side:
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Sure, we can give it a go - though I'm not sure if this bus is read-only or read-write. The unit (fortunately) has very basic controls:
I (think) I've located the relevant positions in the response. In ESPAltherma they've defined each reading to a string / position / lookup rule (some lookup rules apply maths). The relevant ones are below (removed ... descriptions that were garbage) A/C On/Off - {0x53, 6, 200, 1, -1, "..."},
Fan Hi/Lo - {0x53, 2, 164, 1, -1, "..."},
Operating Mode - {0x55, 0, 201, 1, -1, "..."},
Target Temp - {0x54, 8, 153, 2, -1, "..."}, 16c: |
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Do we have a good name for this protocol? I'll have to add it, even if for reading. Looks pretty simple. |
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To avoid confusion, I propose we call this Altherma_S given these units seem to be using that platform? Amazingly it's also called 'S' protocol in Daikin diagnostic software for Altherma units (raomin/ESPAltherma#74 (comment)). |
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OK, I may abbreviate for a setting name :-) When I get on to this, ideally, I'll need you to point your MQTT to my server and allow me to load some test code, etc. I'll let you know. Not sure exactly when I have time. |
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I have a feeling this may be next week now, sorry, I'll see if I can fit in sooner though. |
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I have made a beta with a setting I have yet to code any of the messages. When you have time, set your |
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@howlzj did you have any luck getting this working? |
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@revk @howlzj I think I have the same protocol. Can I support somehow? |
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creo que tengo el mismo protocolo. ¿Puedo apoyar tambien de alguna manera? |
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Sorry - I have been quite distracted with personal matters for the last few months. Unfortunately no - this seems to be an unsolved problem for ESPAltherma as well. Their approach was to spoof a hardwired controller as an 'easier' option. |
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Buenas, con los datos que recibo en RX "dump" ya puedo saber el estado de la máquina , temperatura de consigna, on, off, frio, calor y velocidad del ventilador, lo que no se, es si puedo enviar algun dato por TX para on , off. |
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I have a FTX25J3V1B. This is my Board. Connected to S403-port |
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@revk did you end up solving this one? I have a fdyq250lav1 indoor unit (with X50A/X35 ports), and connected it using one of these cables: https://www.aliexpress.com/item/1005005465304996.html?spm=a2g0o.order_list.order_list_main.11.4e781802joU7C5 The Faikin powers on (purple light flashing) and I can connect to it via WiFi - the UI simply says "System is offline." Any help / insights? |
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There isn't support for our units just yet. I have the same one, but requires a bit of a deep dive. I have Madokas on mine, so I'm using an ESP32+BTLE solution for now. |
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Thanks! Any reason why you chose Madoka vs Airbase BRP15B61? |
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It seems i am in the same boat when it comes to this aswell My unit is a FBQ60BV1A with a FBQ35-60B7V1 control board - This is an in ceiling unit and it currently is controled with a P1|P2 interface. Like yours the X50A port is a larger JST-EH. Happy to help put where i can in reverse engineering this. Has there been any more progress? My board below. |
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I can get some dumps from my X50A maybe. |
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That will be super helpful |
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how about i point my MQTT to you? Adding to that i have just changed protocol Altherma and i am seeing data as you did before. So it seems we are communicating. |
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I have a server set up. I have some "real work" today as well, so I'll see what I can do. |
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This is an example from my unit, X50A |
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I have a FDYQ ducted system (AUS, 2010) which has an X35/X50A port not recognised by the Faikin.
It's generating these errors in MQTT as it cycles through the Tx/Rx combinations:
{"protocol":"X50A","badhead":true,"mismatch":true,"badrxlen":true,"data":"15EA"}
{"protocol":"X50A¬Tx","badhead":true,"mismatch":true,"badrxlen":true,"data":"15EA"}
{"protocol":"X50A¬Rx","badsum":"7A","data":"7505"}
{"protocol":"X50A¬Tx¬Rx","badsum":"F4","data":"75057505"}
I'll mention the X50A port on this model is a different size to others here. It's an 8-pin JST-EH connector (same as S21 but longer) - I had to modify the cable to connect it. The mainboard is identical to the one in this eBay listing: https://www.ebay.co.uk/itm/224203252109
What do I need to start debugging? It's a ducted unit and a real pain to get in there.
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