Real Problems. Real Fixes.
Troubleshooting Log
Why We Switched from Battery SOC to Voltage Control on an EG4 16 kWh Battery System
Why We Switched from Battery SOC to Voltage Control on an EG4 16 kWh Battery System … When integrating lithium batteries like the EG4 16kWh…
ECU gateway offline or not connecting to internet
EMA portal shows no heartbeat, or the ECU cloud LED is off.
Enphase Microinverter Offline
One or more panels show grey or missing data in the Enphase App.
Enphase IQ Gateway is offline or not connecting
The app shows stale data, or the Gateway's LEDs indicate a problem.
APsystems Microinverters showing "NC" (No Communication)
One or more panels appear grey or labelled "NC" in the EMA Module View.
Checking Breakers and AC Disconnect (When Gateway is Online but Microinverters Are Not Reporting/Producing)
Gateway is online and connected to the internet but there are no production shown on Enphase Enlighten App.
APsystems DS3-L / ECU-R Offline — Production OK, Monitoring Restored
System appeared offline in the monitoring app, raising concern that solar production had stopped.
Solis 11.4kW Inverter Alarm Code 1011 — Fixed by Correcting Loose AC Tap Connections
Solis 11.4kW Inverter Alarm Code 1011
SMA SBSE4.8-US-50 Inverter Errors 9034 & 202 — Resolved by Correct Grid Configuration
Rapid Shutdown Device: Module-level RSD on String B
Solis 11.4kW Inverter – Alarm Code 1011
Alarm Code 1011 – Grid Voltage Out of Range
