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Growatt

Growatt SPH 3600TL BL-UP

Energy · And More

WorksLocal

1 report: 1 says it works.

Reported with 1 integration: Growatt Modbus.

What people report

IntegrationIn Home AssistantIn Apple HomeWhat they saidSource
Growatt ModbusWorks LocalTOU writes fixed with atomic FC16 write; confirmed by users
Saved copy
Same inverter and symptom here (SPH 3600TL BL-UP), and I can confirm your hypothesis #1, the firmware requires an atomic multi-register (FC16) write for a TOU period's time window, with a reproducible test, plus narrow down *which* writes are affected and rule out the cloud-override and EEPROM-dropout theories. Setup: SPH 3600TL BL-UP, profile `sph_3000_6000_v201` (DTC 30000 = 3502, protocol 30099 = 201), ShineWiLan-X2 datalogger (fw 7.6.1.3, TCP 502), integration `0.9.8`. On V2.01 the AC-charge periods are `[start, end, enable]` triples at holding 1100-1102 / 1103-1105 / 1106-1108 …

Excerpt saved from GitHub on 2026-10-23.

Issue #333 · 2026-06

Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.

In ReReHome

Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.

Identifiers

BrandGrowatt
ModelSPH 3600TL BL-UP
CategoryEnergy