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error Upgraded
Error Code LED blinks 3 times
Internal Over Temperature Shutdown. Unit will auto-recover after cooling down.
? What Causes This
Unit overheating, possibly from blocked ventilation or environmental heat exposure.
✓ How to Fix It
Ensure proper airflow and room temperature, let unit cool for a few minutes before reactivating it.
Source: page 47 of the official manual
From the manual
This error code appears in:
Upgraded 30A Solar Charge Controller