[davmoz]

Release 1.1.2. A community user with an SMA inverter and no SMA Energy Meter saw 15 of 17 sensors unavailable on firmware 7.0.3.

Cause

/ders lists what a device is configured with, and on firmware 7 that includes DERs it never reads. This inverter lists solar, meter and inverter but /data/json only has solar. The integration created sensors from /ders, so the rest could never get a value. The mppt array it does send had no sensors at all.

Changes

• PV input sensors: MPPT 1 and 2 Voltage, Current and Power, positive while generating.
• Sensors are created at their first value, from a coordinator listener, so a firmware update that starts sending more needs no reload. A sensor that has had a value stays and shows unavailable when the value stops. This replaces _REQUIRES_INITIAL_VALUE, which only covered three sensors and only at setup.
• L1-L3 from the inverter when the device has no grid meter, positive while supplying like Inverter Power. A grid meter on the same device keeps these sensors. Firmware does not send this for SMA yet; Solis and the other profiles with an inverter block get it today.
• Release 1.1.2, which also ships the docs merged in Update docs for 1.1.1 #22, so HACS shows the corrected README and minimum version.

Existing installs

Sensors that never had a value stay in Home Assistant as "no longer provided" until the user deletes them. I did not remove them automatically, since that would also hit a sensor whose device is only temporarily not reporting.

Testing

• pytest: 138 passed. black, isort, mypy clean, pylint 10/10. Two old tests pinned the old behaviour and were rewritten.
• New fixture fw7_sma_data.json is a captured 7.0.3 payload with the serial replaced.
• Real Home Assistant 2026.10.1 in a throwaway container, against a fake Zap replaying captured 7.0.3 responses:
  • 1.1.1 reproduces the report: 17 SMA sensors, 15 unavailable.
  • Upgrade: entity IDs unchanged, MPPT sensors added, the dead sensors marked restored, P1 unchanged with none unavailable.
  • Inverter block added while running: inverter power, temperature, frequency and L1-L3 get values under their existing entity IDs, with no restart.
  • Fresh install: 8 SMA sensors with clean names and IDs, none unavailable.

Not tested against a real SMA inverter end to end; the payloads are real, the HTTP server replaying them is not.

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