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Samsung Gen 7 16kW Integrated unit Modbus monitoring

Air Source Heat Pumps (ASHPs)

Last Post by antonical 12 hours ago

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antonical

(@antonical)

Active Member Member

Joined: 2 months ago

Posts: 14

Topic starter 11/03/2026 6:03 pm

Looking for some assistance to get modbus monitoring working on our Samsung Gen 7 unit. With the aim of putting some sensors in our Home Assistant setup.

I can communicate with the modbus card but find the data and mapping it seem to be a real challenge and the hope of producing a HA sensor showing the realtime COP a pipe dream as I cannot reliably get the LWT RWT and Flow rate. I already have the realtime power from a Shelly Pro em50. But can't get the flow rate.

I have followed the work Glyn did that fed into eamonhub, but it doesn't seem to work with the Gen 7. https://community.openenergymonitor.org/t/emonhub-support-for-samsung-heatpump-monitoring-via-modbus/21154/

Can anyone assist with this? I am sure if we can get it working it will help others looking to do some HA integration/automation.

Any help appreciated.

Cheers

6.5kWp of Solar G98 3.6kW inverter 32kWh battery. Samsung Gen 7 16kW Integrated Unit Newark Cylinders 'Heat Geek' Custom SuperTank and 50Ltr Volumiser Tank.

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Majordennisbloodnok

(@majordennisbloodnok)

Famed Member Moderator

Joined: 4 years ago

Posts: 1687

11/03/2026 9:35 pm

@antonical, this is definitely shaping up to be a sleeves-rolled-up exercise. I thought there’d be a HACS project already for something like this but it seems not.

How comfortable are you with HA already? I want to ask if you’ve explored the modbus HA integration but don’t know if that’s a dumb thing to ask, if you’re thinking “what modbus integration or if you’re somewhere in between. I’d also be interested if you’re currently connecting via a serial connection or via an RS485 to ethernet adapter.

105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"

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antonical

(@antonical)

Active Member Member

Joined: 2 months ago

Posts: 14

Topic starter 11/03/2026 10:12 pm

@majordennisbloodnok This is what I built today.

It's a work in progress but a good start.

Cheers

6.5kWp of Solar G98 3.6kW inverter 32kWh battery. Samsung Gen 7 16kW Integrated Unit Newark Cylinders 'Heat Geek' Custom SuperTank and 50Ltr Volumiser Tank.

👍

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antonical

(@antonical)

Active Member Member

Joined: 2 months ago

Posts: 14

Topic starter 12/03/2026 11:18 am

The setup for this is a Samsung Modbus card. Connected via samsung specification wiring back into the house into a Waveshare RS485 to ETH (B) POE adaptor. This is setup as a server with the following settings. Port 502, 9600, 8, 1, Even. Alow multiple connections.

Cheers

6.5kWp of Solar G98 3.6kW inverter 32kWh battery. Samsung Gen 7 16kW Integrated Unit Newark Cylinders 'Heat Geek' Custom SuperTank and 50Ltr Volumiser Tank.

👍

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