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verified publisher icon JanM321

Compatibility with Ducted heating

Open Oxygen54 opened this issue 1 year ago • 4 comments

Hi,

I have a ducted heating and want to know is this project could work with this :

  • LG UUD3 U30 (Heat Pump outdoor unit)
  • LG UM36F N20 (HVAC indoor unit)
  • LG PREMTB100 / RS3 (As Master/Slave controller)

All of them are connected to the same bus and the actual system is this :

Link

In red the module output and green the LG bus.The IntesisBox LG-RC-MBS-1 apparently convert the LG signal to modbus RTU (EIA485)

I would like to add an 6-relay board that appears on Home Assistant as a switch. The goal is to control the 6 servomotors that open or close the air outlet in each room. Will adding this to the code interfere with its operation? I plan to use this board : https://www.waveshare.com/esp32-s3-relay-6ch.htm

image

Can this board could work by using the RS485 module at the first image and adapting the connection in the code?

Documentation of the RS485 module : https://cdn.chipkin.com/assets/uploads/2018/feb/16-01-14-46_intesisbox_lg-rc-mbs-1_user_manual_en.pdf

Thanks

Oxygen54 avatar Nov 14 '24 18:11 Oxygen54

If you use the LG PREMTB100 today, then just replacing that controller with the ESPHome controller should work. You could probably also use both the PREMTB100 and the ESPHome controller, but most users don't have a Master/Slave setup so I can't say how well it would work especially with 3 controllers.

Keep in mind that this controller doesn't support zone control yet, so if you use that on the PREMTB100 it won't be available in HA.

I don't know anything about the relay board or duct units in general.

JanM321 avatar Nov 15 '24 06:11 JanM321

Yes, I'll handle the zone control on my own, but my main question is about the RS485. If I use this project and modify the communication to adapt it for the RS485 module, should it work? I saw on some forums that to use the RS485 module, it was simply a matter of adapting the communication.

Oxygen54 avatar Nov 17 '24 10:11 Oxygen54

It does work with ducted systems, just replaced mine ([here](LVN241HV4 and PREMTB100 (source: https://github.com/JanM321/esphome-lg-controller/discussions/86))

qurpi avatar Nov 17 '24 19:11 qurpi

Thanks for the answer :) , I need to find how to modify the code to use RS495

Anoxym avatar Nov 19 '24 13:11 Anoxym