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unreality / FujiHeatPump

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

2 wire #8

Open wrt83 opened 1 year ago

wrt83 commented 1 year ago

I have a fujitsu ducted heat pump that utilizes the 2 wire protocol. The line is 12v dc and I suspect/home it's a LIN configuration using the same commands that pulls power on the signal, but I'm not sure how to confirm that. I have read some documentation that states the internal board has a jumper to switch between 2 and 3 wire thermostats, but I don't have easy access to check and it's not in my models design and tech manual. My thermostat is the uty-rnruz. Suggestions on how to check? Sometime like the design mentioned in this? https://ww1.microchip.com/downloads/en/DeviceDoc/article_ac9_two-wire-lin-networking.pdf Others I'm sure will benefit if we can reverse engineer this one.

sagilo commented 1 year ago

@wrt83 did you manage to get it working? any other solution for controlling ducted 2 wire heat pump?

wrt83 commented 1 year ago

@sagilo not yet, other projects have had priority.