Airton HVAC unit remote control "IFEEL" mode implementation.

[ouinouin]

Hi, i m actually polishing the reverse engineering i did for airton ac units with theminus, and throught my berryton airton ac unit driven in tasmota berry language (avail on github) project.
Tonight i m fiddling with my claude friend, and i managed to capture some frames from the remote control while i activate the IFEEL mode by pressing the button on the remote.
the ifeel mode sends the internal remote temp sensor of the ac remote control to the ac unit, to ensure a better regulation.
i have yet to discover if this is really active on the AC side, but this remote is very common on onther units and i guess they use the same protocol, so its worth the exercise.
the remote control while in Ifeel mode send a frame every 10 minutes : here is what tasmota captured so far : first frames are a fairly normal temp, around 26 , then i blowed into the sensor, so expect more than30 deg , then i put is under a fan so maybe 23 34 degres.
here the capture :

19:39:31.624 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xA90000001911D0","DataLSB":"0x9500000098880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Cool","Power":"On","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6785-3335+450-400CdCdCdC-1230C-395CeCeCeCdCdCdCeCdCdCdC-1235CdCdCeCeCdCdCdCdCd+445dCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdHgCdCdCgCdCgCdHeC","RawDataInfo":[115,115,0]}}
19:49:27.876 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xA80000001A11D0","DataLSB":"0x1500000058880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Dry","Power":"On","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6790-3335+450-400+445dCdCdC-1230CdCfCfC-1235CdCdCdCgCdCdCdCdCgCdCfEgCdCdC-405EdCdCdEdE-425IdEiIiIi+420iJiIiJiIiJiJiJiJiJiJiJiJiJiIiJiIiJiJ-1260IjIkIiJ-1255J","RawDataInfo":[115,115,0]}}
19:59:24.948 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xA80000001A11D0","DataLSB":"0x1500000058880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Dry","Power":"On","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6785-3335+450-400CdCdCdC-1230CdCeCeCeCdCdCdCeCdCdCdCdCeCdCeCeCdCdCd+445dCdCdCdCdCdCdCdFdCdCdCdFdCdCdCdCdCdFdFdFdFdFdFdCdFdFdF-1235FdFgFdF-1250+420","RawDataInfo":[115,115,0]}}
20:09:21.909 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0x570000002311D0","DataLSB":"0xEA000000C4880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Fan","Power":"Off","Celsius":"On","Temp":16,"FanSpeed":"Low","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6780-3330+450-400CdCdCdC-1230C-395CeCeCeCdCdCdCeCdCdCdCeCeCdCdCdCe+445dC-405GdCdCdCdGdCdCdGdCdGdGdCdGdGdGdGdGdGdCdGdCdCdGdGdGeGeC-1235GdGiGdGiGfG","RawDataInfo":[115,115,0]}} chauffee en soufflant dedans.
19:39:31.624 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xA90000001911D0","DataLSB":"0x9500000098880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Cool","Power":"On","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6785-3335+450-400CdCdCdC-1230C-395CeCeCeCdCdCdCeCdCdCdC-1235CdCdCeCeCdCdCdCdCd+445dCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdHgCdCdCgCdCgCdHeC","RawDataInfo":[115,115,0]}}
19:49:27.876 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xA80000001A11D0","DataLSB":"0x1500000058880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Dry","Power":"On","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6790-3335+450-400+445dCdCdC-1230CdCfCfC-1235CdCdCdCgCdCdCdCdCgCdCfEgCdCdC-405EdCdCdEdE-425IdEiIiIi+420iJiIiJiIiJiJiJiJiJiJiJiJiJiIiJiIiJiJ-1260IjIkIiJ-1255J","RawDataInfo":[115,115,0]}}
19:59:24.948 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xA80000001A11D0","DataLSB":"0x1500000058880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Dry","Power":"On","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6785-3335+450-400CdCdCdC-1230CdCeCeCeCdCdCdCeCdCdCdCdCeCdCeCeCdCdCd+445dCdCdCdCdCdCdCdFdCdCdCdFdCdCdCdCdCdFdFdFdFdFdFdCdFdFdF-1235FdFgFdF-1250+420","RawDataInfo":[115,115,0]}}
20:09:21.909 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0x570000002311D0","DataLSB":"0xEA000000C4880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Fan","Power":"Off","Celsius":"On","Temp":16,"FanSpeed":"Low","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6780-3330+450-400CdCdCdC-1230C-395CeCeCeCdCdCdCeCdCdCdCeCeCdCdCdCe+445dC-405GdCdCdCdGdCdCdGdCdGdGdCdGdGdGdGdGdGdCdGdCdCdGdGdGeGeC-1235GdGiGdGiGfG","RawDataInfo":[115,115,0]}}
20:19:13.173 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xAD0000001D11D0","DataLSB":"0xB5000000B8880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Auto","Power":"On","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6785-3335+450-400Cd+445dCdE-1230CdCfC-1235EgCdEdCdE-1260+420-425JdEjJ-1255IiJfCkIgEjJjIjIjJjIjIjJjIjIjJiIjJjIiJiIjIjIjIjJiIjIjIjIjJiIjJjIhIiJkIhJiIhIjI-1250I","RawDataInfo":[115,115,0]}}
20:29:08.254 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xAA0000001811D0","DataLSB":"0x5500000018880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Auto","Power":"On","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6790-3335+450-400CdCdC-395C-1230CdCfCfCfCdCdCeCfCdCdCdCdCdCeCfCfCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCeC-1235CdCgCdCgCdCfC","RawDataInfo":[115,115,0]}}
20:39:08.694 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xA40000001611D0","DataLSB":"0x2500000068880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Auto","Power":"Off","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6790-3335+450-400CdCdC-395C-1230CeCfCfCfCdCdCeCfCdCdCdCeCfCfCdCfCdCdCdCdCdCd+445dCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdC-1235CdCdChCdCfC","RawDataInfo":[115,115,0]}}
20:49:08.549 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xAB0000001711D0","DataLSB":"0xD5000000E8880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Auto","Power":"Off","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6790-3335+450-400CdCdC-395C-1230CeCfCfCfCdCdCdCfCdCeCdCfCfCfCeCfCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCfCfCdC-1235+445dCgCdCfC","RawDataInfo":[115,115,0]}}
20:59:07.811 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xAA0000001811D0","DataLSB":"0x5500000018880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Auto","Power":"On","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6790-3335+450-395C-400CdCdC-1230CdCfCfCfCeCeCdC-1235+445eCdCeCeCeCdCfCfCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCeCfCeCgCeCfCeCfC","RawDataInfo":[115,115,0]}}
21:09:07.707 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xAA0000001811D0","DataLSB":"0x5500000018880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Auto","Power":"On","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6790-3335+450-400CdCdC-395C-1230CeCfCfCfCdCdCdCfCdCdCdCdCeCdCfCfCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdC-1235CdCgCdCfCdCfC","RawDataInfo":[115,115,0]}}
21:19:06.397 MQT: tele/irbridge/RESULT = {"IrReceived":{"Protocol":"AIRTON","Bits":56,"Data":"0xAA0000001811D0","DataLSB":"0x5500000018880B","Repeat":0,"IRHVAC":{"Vendor":"AIRTON","Model":-1,"Command":"Control","Mode":"Auto","Power":"On","Celsius":"On","Temp":16,"FanSpeed":"Min","SwingV":"Off","SwingH":"Off","Quiet":"Off","Turbo":"Off","Econo":"Off","Light":"Off","Filter":"Off","Clean":"Off","Beep":"Off","Sleep":-1,"iFeel":"Off","SensorTemp":null},"RawData":"+6790-3335+450-400CdCdC-395C-1230CeCfCfCfCdCdCdC-1235CdCdCdCdCdCeCfCfCdCeCdCdCdCdCdCdCdCdCdCdCdCdCdCdCdCeCdCdCdCdCdCdCdCdCdCdCgCdC-1260+425dChIdC-1255I","RawDataInfo":[115,115,0]}}
une trame toutes les 10 minutes

Evidence

These are consecutive periodic frames (no button pressed). At ~20:09 I breathed onto the
remote to warm its sensor; the value peaks at 35 °C (≈ breath temperature) and then decays
back to room temperature (~24 °C):

time	Data (MSB)	decoded as (wrong)	5th byte	= °C
19:39	0xA90000001911D0	Mode Cool	0x19	25
19:49	0xA80000001A11D0	Mode Dry	0x1A	26
20:09	0x570000002311D0	Mode Fan / Power Off	0x23	35 (breathed on it)
20:19	0xAD0000001D11D0	Mode Auto	0x1D	29
20:29	0xAA0000001811D0	Mode Auto	0x18	24
20:39	0xA40000001611D0	Mode Auto / Power Off	0x16	22
20:59	0xAA0000001811D0	Mode Auto	0x18	24 (settled = room temp)

Example raw decode (note iFeel/SensorTemp are not populated):
{"Protocol":"AIRTON","Bits":56,"Data":"0x570000002311D0","DataLSB":"0xEA000000C4880B",
"IRHVAC":{"Vendor":"AIRTON","Command":"Control","Mode":"Fan","Power":"Off","Temp":16,
"FanSpeed":"Low","iFeel":"Off","SensorTemp":null}}

Analysis

The iFeel report frames have the shape (MSB): [checksum] 00 00 00 [TEMP] 11 D0

• [TEMP] (5th byte) = sensor temperature in whole °C (raw hex read as decimal:
  0x18 = 24 °C, 0x23 = 35 °C). Validated across 11 consecutive frames.
• The trailing byte distinguishes the frame type: ...11D0 = iFeel/SensorTemp report,
  whereas a normal Control command ends in ...11D3 (a real Control frame matching the
  AC state was observed as 0x9D8800095911D3).
• [checksum] (1st byte) varies with [TEMP] only.

@crankyoldgit , are you interrested to add those frames types to the airton protocol , this could be useful to be forwarded through an IR bridge to regulate temp over places where ir is not passing though.

shal i open an issue, do you need more input , tell me what can i bring, i ll try my best (even if my answers can be quite long (work offshore).