Hi everyone :wave: I’m excited to share my Homey app for Huawei FusionSolar solar energy systems. If you own a Huawei SUN2000 inverter, LUNA2000 battery, DTSU666/EMMA power meter or an EMMA-based Smart Charger — this app is for you. :sun_with_face: What is this app? The Huawei FusionSolar Manager …

Last version semi works. It gets changed but i get timeout sometimes. Not all the times thow.

I’ve extended the timeout again and implemented logging for modbus write actions. Please make sure to pause any other homey apps which access the same modbus device while testing.

Is the battery configured to use mode “maximize self consumption“?

Separate devices vs. FusionSolar Plant Install the separate devices: SUN2000 (Modbus) for the inverter and LUNA2000 (Modbus) for the battery. The “FusionSolar Plant” device uses the cloud API and only shows aggregated yield data — it does not give you control over battery settings or detailed live …

It looks like [image] henrik_andersson2: EMMA [image] henrik_andersson2: Just installed it and works great with EMMA (Unit ID 0) and LUNA2000 S1 (Unit ID 2) via Modbus TCP port 502! However I can’t get any data from the SUN2000-M (3-phase) inverter. It connects without error but all val…

Smart Charger is implemented now: [image]

I had both s dongle and smart meter before but when I installed EMMA it replaces them so only EMMA now. [1000003909]

[1000003912] New user here so can only post one picture!

Thank you! So it looks like EMMA already has the required information of the Inverter. Maybe I’ll remove some capabilities from EMMA, handle EMMA as Power Meter and add a second inverter: SUN2000 Inverter (EMMA modbus) Anyone else having such a combination of devices and same result …

[APP][Pro] Huawei FusionSolar Manager

Apps

Andi April 5, 2026, 10:14pm 34

Smart Charger is implemented now:

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[APP][Pro] Huawei FusionSolar Manager

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