I can't decode HVAC remote model BRC1C62

[mahendrans2405]

I’m using an ESP32 to receive raw data from an HVAC system. I receive the raw data every few seconds.

I want to know:

Can I control the HVAC system directly with the ESP32 using the XL1192 chip, without using the original controller?

If it’s possible, how can I do it?

How can I decode the raw data?

When receiving HVAC raw data, should I use the normal UART RX method, or do I need to use the HBS (Home Bus System) Manchester encoding method?

Below, I have provided the raw data I received and an image of the remote model.

https://www.google.com/search?q=brc1c62+remote&oq=brc1c62+remote&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIHCAEQIRigATIHCAIQIRiPAjIHCAMQIRiPAtIBCDQ0NTBqMGo3qAIAsAIA&sourceid=chrome&ie=UTF-8

40 00 10 01 00 62 02 17 00 11 00 18 00 00 00 00 00 27 00 00 01 00 87 F3

00 00 11 00 00 06 06 00 16 5E 00 00 00 D7 40 00 11 00 00 00 00 00 29 CC

40 0 10 1 0 62 2 17 0 11 0
17:53:18.517 -> Checksum invalid
17:53:18.517 -> [51575] Received packet: 18 0 0 0 0 0 27 0
17:53:18.517 -> Checksum invalid
17:53:18.517 -> [51585] Received packet: 0 1 0 87 F3

00 00 10 01 62 02 17 00 11 00 00 00 00 00 00 00 27 40 01 00 00 00 00 21
40 00 10 01 00 62 02 17 00 11 00 18 00 00 00 00 00 27 00 00 01 00 87 F3

40 F0 38 1 62 17 0 11
18:05:48.120 -> Checksum invalid
18:05:48.120 -> [20420] Received packet: 0 16 0 11 1 0 0 0 C0
18:05:48.120 -> Checksum invalid
18:05:48.167 -> [20460] Received packet: 0 0 0 0 10 1 62

40 F0 38 1 62 17 0 11 0 16 0 11 1 0 0 0 C0 0 0 0 0 10 1 62

:53:15.852 -> [48905] Received packet: 0 0 0 0 0 27 0 0 1
17:53:15.852 -> Checksum invalid
17:53:15.852 -> [48935] Received packet: 0 87 F3 0
17:53:15.852 -> Checksum invalid
17:53:15.898 -> [48945] Received packet: F0 38 1 0 62 2 17 0
17:53:15.898 -> Checksum invalid
17:53:15.898 -> [48955] Received packet: 11 0 16 0 11 1 0 8 0
17:53:15.898 -> Checksum invalid
17:53:15.898 -> [48985] Received packet: C0 75 40 F0

18:05:48.120 -> Checksum invalid
18:05:48.167 -> [20460] Received packet: 0 0 0 0 10 1 62 2 17 0 11 0 0
18:05:48.167 -> Checksum invalid
18:05:48.167 -> [20471] Received packet: 0 0 0 0 0 27 40 1 0
18:05:48.167 -> Checksum invalid
18:05:48.260 -> [20531] Received packet: 0 0 0 21 40 0 10 1
18:05:48.260 -> Checksum invalid
18:05:48.260 -> [20541] Received packet: 0 62 2 17 0 11 0 18 0
18:05:48.260 -> Checksum invalid
18:05:48.260 -> [20551] Received packet: 0 0 0 0 27 0 0 1
18:05:48.260 -> Checksum invalid
18:05:48.306 -> [20591] Received packet: 0 87 F3 0 F0 38 1 0 62 2 17 0 11
18:05:48.306 -> Checksum invalid
18:05:48.306 -> [20602] Received packet: 0 16 0 11 1 0 8 0 C0
18:05:48.306 -> Checksum invalid
18:05:48.353 -> [20642] Received packet: 75 40 F0 38 1 62 17 0 11 0 16 0 11
18:05:48.353 -> Checksum invalid
18:05:48.399 -> [20683] Received packet: 1 0 0 0 C0 0 0 0 7 20 4 38
18:05:48.399 -> Checksum invalid
18:05:48.469 -> [20814] Received packet: 0 F0 38 1 0 62 2 17 0 11 0
18:05:48.508 -> [20815] Auto-detected status request: [00h, F0h, 38h, 01h]
18:05:48.508 -> Checksum invalid
18:05:48.508 -> [20824] Received packet: 16 0 11 1 0 8 0 C0
18:05:48.508 -> Checksum invalid
18:05:48.540 -> [20864] Received packet: 75 40 F0 38 1 62 17 0 11 0 16 0 11
18:05:48.540 -> Checksum invalid
18:05:47.903 -> [20187] Received packet: 8 0 C0 75 40 F0 38 1 62 17 0 11
18:05:47.903 -> Checksum invalid
18:05:47.903 -> [20198] Received packet: 0 16 0 11 1 0 0 0 C0 0
18:05:47.903 -> Checksum invalid
18:05:48.039 -> [20358] Received packet: 0 0 6 20 4 69 0 F0 38 1 0 62
18:05:48.039 -> Checksum invalid
18:05:48.039 -> [20369] Received packet: 2 17 0 11 0 16 0 11 1 0
18:05:48.039 -> Checksum invalid
18:05:48.120 -> [20409] Received packet: 8 0 C0 75 40 F0 38 1 62 17 0 11
18:05:48.120 -> Checksum invalid
18:05:48.120 -> [20420] Received packet: 0 16 0 11 1 0 0 0 C0
18:05:48.120 -> Checksum invalid
18:05:48.167 -> [20460] Received packet: 0 0 0 0 10 1 62 2 17 0 11 0 0
18:05:48.167 -> Checksum invalid
18:05:48.167 -> [20471] Received packet: 0 0 0 0 0 27 40 1 0
18:05:48.167 -> Checksum invalid
18:05:48.260 -> [20531] Received packet: 0 0 0 21 40 0 10 1
18:05:48.260 -> Checksum invalid
18:05:48.260 -> [20541] Received packet: 0 62 2 17 0 11 0 18 0
18:05:48.260 -> Checksum invalid
18:05:48.260 -> [20551] Received packet: 0 0 0 0 27 0 0 1
18:05:48.260 -> Checksum invalid
18:05:48.306 -> [20591] Received packet: 0 87 F3 0 F0 38 1 0 62 2 17 0 11

[linhpd88]

Short answer: you can.
Long answer, some Chinese manufacture have done it and add Xiaomi Home or Tuya app to it.
Also there is a Vietnamese guy had done it, but it not open source.
If you want it you must make your software behavior like the BRC1C62, sending same data when receiving specific data from the Indoor unit.

[mahendrans2405]

Thank you for your reply, can please provide more details about HVAC , how to control the indoor unit and heat pump without remote, and is there any data format there if you have please share, and how to receive the data from HVAC normal UART method or any different methods used for HVAC

…

On Fri, 3 Oct, 2025, 9:58 pm linhpd88, ***@***.***> wrote: *linhpd88* left a comment (Arnold-n/P1P2MQTT#226) <#226 (comment)> Short answer: you can. Long answer, some Chinese manufacture have done it and add Xiaomi Home or Tuya app to it. Also there is a Vietnamese guy had done <https://www.facebook.com/share/p/1769ik2Fb4/> it, but it not open source. If you want it you must make your software behavior like the BRC1C62, sending same data when receiving specific data from the Indoor unit. — Reply to this email directly, view it on GitHub <#226 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BELM7II5RWMWHK4XEBEFGJD3V2P4BAVCNFSM6AAAAACHR52XDWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTGNRWGM3DONRWGA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[linhpd88]

Thank you for your reply, can please provide more details about HVAC , how
to control the indoor unit and heat pump without remote, and is there any
data format there if you have please share, and how to receive the data
from HVAC normal UART method or any different methods used for HVAC
…

It is not me, I guest that they will not answer you, because you will become their competitor. This project run in Sub RC mode, you can try capture data from BRC1C62 (It run as Main RC mode) and the Indoor and try to reverse engineering it. But this project use Atmega not ESP32. Off topic.

[mahendrans2405]

Using ESP32 I received the data, above my query I provided the data what I received can please check is there possible to control using esp32

…

On Fri, 3 Oct, 2025, 10:11 pm linhpd88, ***@***.***> wrote: *linhpd88* left a comment (Arnold-n/P1P2MQTT#226) <#226 (comment)> Thank you for your reply, can please provide more details about HVAC , how to control the indoor unit and heat pump without remote, and is there any data format there if you have please share, and how to receive the data from HVAC normal UART method or any different methods used for HVAC … <#m_4663953642820936324_> It is not me, I guest that they will not answer you, because you will become their competitor. This project run in Sub RC mode, you can try capture data from BRC1C62 (It run as Main RC mode) and the Indoor and try to reverse engineering it. But this project use Atmega not ESP32. Off topic. — Reply to this email directly, view it on GitHub <#226 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BELM7IOSRE2QJKMYTHDX6X33V2RMTAVCNFSM6AAAAACHR52XDWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTGNRWGM4TSOBYGQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>