Noah-MQTT 0.0.29 starts successfully but publishes no MQTT topics (Noah 2000 + Hoymiles HM-800)

[tobimmaul]

Noah-MQTT 0.0.29 starts successfully but publishes no MQTT topics (Noah 2000 + Hoymiles HM-800)

Environment

• Home Assistant Core: 2026.6.1
• Home Assistant OS: 17.3
• Supervisor: 2026.05.1
• Hardware: Raspberry Pi 5 (aarch64)
• Noah-MQTT Version: 0.0.29
• MQTT Broker: Mosquitto Add-on 7.1.0
• Inverter: Hoymiles HM-800
• Battery: Growatt Noah 2000
• Number of plants in Growatt account: 1

Description

The add-on starts successfully and remains running.

The MQTT connection is established successfully and the Growatt login also appears to succeed.

However, no MQTT topics are published and no Home Assistant MQTT Discovery entities are created.

Subscribing to topic # in Home Assistant MQTT diagnostics shows no messages from Noah-MQTT.

Add-on Configuration

log_level: DEBUG
polling_interval: 30
mqtt: {}
growatt_api_mode: web+app
growatt_username: <configured>
growatt_password: <configured>

The add-on uses the Home Assistant Mosquitto service automatically.

Log Output

INFO connecting to mqtt broker
INFO connected to mqtt broker
INFO setting mode web+app
INFO setting server url (web)
INFO logging in to growatt (web)...
INFO setting server url (app)
INFO start polling growatt (web)

After this line, no additional log entries appear.

There are no errors, no warnings and no MQTT messages.

Verification Performed

MQTT

• Mosquitto broker is running
• MQTT integration is working
• MQTT connection from Noah-MQTT is established
• TCP connection remains active
• No disconnects occur

Environment Variables

The running process receives all required variables:

MQTT_HOST=core-mosquitto
MQTT_PORT=1883
MQTT_USERNAME=addons
MQTT_PASSWORD=<set>

GROWATT_API_MODE=web+app
GROWATT_USERNAME=<set>
GROWATT_PASSWORD=<set>

LOG_LEVEL=DEBUG
POLLING_INTERVAL=30

Growatt

• Noah 2000 is visible in the Growatt app
• Device is online
• Current SOC and power values are visible
• Only one plant exists in the account

Home Assistant

• No MQTT Discovery entities created
• No MQTT messages published
• Subscribing to # shows no Noah-MQTT traffic

Additional Information

The setup uses a Hoymiles HM-800 inverter instead of a Growatt inverter.

The binary appears to contain Noah-specific functionality, including:

• GetPlantList
• GetNoahPlantInfo
• getNoahStatusData
• getNoahTotalData

Therefore it seems the application recognizes Noah devices in principle.

Could this be related to Noah-only installations or installations using third-party inverters such as Hoymiles?

Please let me know if additional debugging information is required.

[thomay86]

At first glance I don't see why it isn't working. A few things I would double-check:

Did you create the local HA user (admin privileges) called 'addons' with the password as configured in mqtt?

In my Noah-MQTT add-on configuration I have for some reason (long time ago) manually entered the mqtt configuration (where you only have '{}' but it seems to pass the correct information anyway).

Any other mqtt devices that you use and are working - to narrow down the error?

Already tried the good old 'restart HA'?

Edit: I don't think the type of inverter plays any role in this issue.