Case study

Fujitsu FGL Type A Bus Protocol: decoding an air-conditioner wired remote

Fujitsu FGL Type A Bus Protocol reconstructs BWR wired-remote messages of an older Fujitsu/General air conditioner from logic-analyzer captures. Its specification records 500-baud 8E1 framing, heartbeat and command frames, and temperature and fan encoding; Python tools decode stored captures or sniff the bus live.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 2
Last commit: 2026-05-10
Language: Python

GitHub data as of 2026-11-10

Copy as Markdown View JSON Cite

Evidence

Observed: Code and documentation observed; no download method or demo found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: The documented capture setup uses a USB logic analyzer, a voltage divider and sigrok-cli.
Scope: Confirmed hardware is an AOG36TPAFL system with an EZ-0001HSEFR wired remote.
Limits: ESP32 sniffer, injector and smart-home integrations are planned.
License: MIT license.

Cite

BibTeX

@misc{fujitsu-fgl-type-a-bus-case,
  title = {{Fujitsu FGL Type A Bus Protocol: decoding an air-conditioner wired remote}},
  howpublished = {\url{https://github.com/thaserge-primary/AC-fujitsu-General-EZ-0001HSEFR-integration}},
  url = {https://github.com/thaserge-primary/AC-fujitsu-General-EZ-0001HSEFR-integration},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/fujitsu-fgl-type-a-bus-case/}}
}

Plain text

Fujitsu FGL Type A Bus Protocol: decoding an air-conditioner wired remote. https://github.com/thaserge-primary/AC-fujitsu-General-EZ-0001HSEFR-integration (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/fujitsu-fgl-type-a-bus-case/

Useful? Star Awesome REA on GitHub2.4k

About this entry

The description was reviewed against primary sources.

Report an outdated entry Suggest a translation fix

Primary sources

README.md GitHub · thaserge-primary/AC-fujitsu-General-EZ-0001HSEFR-integration · Revision b71b543
docs/PROTOCOL_SPEC.md GitHub · thaserge-primary/AC-fujitsu-General-EZ-0001HSEFR-integration · Revision b71b543