Sigenergy
1003
Over-Temperature
Inverter temperature too high. Machine will restart after internal temperature returns to normal.
Common causes
Ambient temperature too highPoor ventilation at installation locationDirect sunlight exposureInternal power module malfunction
What to check
STEP 1
Machine will normally restart after temperature returns to normal. Check ventilation at installation location
STEP 2
Check whether device is exposed to direct sunlight and improve shading if so
Escalate if
Fault occurs repeatedly after environmental checks — submit fault feedback via APP > Service > Troubleshooting
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