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unreality / FujiHeatPump

Control Fujitsu AirConditioners with your Arduino board
MIT License
65 stars 12 forks source link

Communicating to outdoor unit #11

Open kristsm opened 1 year ago

kristsm commented 1 year ago

Hi! I am trying to convert Fujitsu (General) AC split system (DC Inverter type R410( to air/water heat pump. I have an outdoor unit without indoor unit. Do you thinks it's possible to use this code for communicating with the outdoor unit directly without the indoor unit (turn on/off etc)? Outdoor unit has following terminal connections:, by the wiring schematics they are identified as follows: (1) N ; (2) L ; (3) Serial; (4) Earth. Does this make it as some kind of 1-wire serial communication interface? Is there any kind of universal protocol for outdoor units or it's proprietary for each manufacturer? Thanks for any kind of information in advance!

limones1319 commented 1 year ago

Hello. I'm curious too if this project can replace an indoor unit to control only the outside unit.

@kristsm did you find anything?

unreality commented 1 year ago

I believe this guy made some progress on decoding the indoor <--> outdoor unit comms:

https://hackaday.io/project/19473-reverse-engineering-a-fujitsu-air-conditioner-unit