Sigenergy
5003
Over-Temperature
EV charger internal temperature too high. Ambient temp >55°C, nearby heat source, loose connection, or cable not to specification.
Common causes
Ambient temperature above 55°CDirect sunlight on chargerNearby heat sourcesLoose connection causing resistance heat
What to check
STEP 1
Check whether charger is in direct sunlight. Check for nearby heat sources. Confirm ambient temperature is below 55°C
STEP 2
Restart device. Check incoming connection is secure
Escalate if
Fault persists after environmental checks and restart — contact Sigenergy support via mySigen App > Support > Troubleshooting
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