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JanM321 / esphome-lg-controller

Wired controller for LG HVAC units using ESPHome and ESP32
BSD Zero Clause License
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LG FM19AH Inverter #5

Closed 111lisu closed 1 year ago

111lisu commented 1 year ago

hello, do you have any information or experience on how to start the LG FM19AH Inverter outdoor unit from ESPHome / modbus ... Without indoor unit?

JanM321 commented 1 year ago

hello, do you have any information or experience on how to start the LG FM19AH Inverter outdoor unit from ESPHome / modbus ... Without indoor unit?

I know it's possible to connect to some outdoor units with the LGAP protocol, but I don't know anything about this.

111lisu commented 1 year ago

The control is by one wire as in your solution +10V and 2 transoptors for each channel (3 chanel multisplit / 2006 year) it only needs heating at max (buffor). I could control the rest differently, but I don't want to modify the control of this inverter ( FSAM20SM60A & IGBT ). id you the control codes from some documentation, or did you observe communication between the units?

JanM321 commented 1 year ago

I just looked at the communication from the wall controller and the indoor unit. I don't know anything about the outdoor unit's communication protocol.