Sigenergy
2005

Under-Temperature

Ambient temperature too low for battery operation. System will self-heat.

Ambient temperature below operating range
STEP 1
Wait for system self-heating to bring battery to operating temperature range. Fault should recover automatically
Ambient temperature has risen to operating range and fault does not clear — submit fault feedback via APP > Service > Support > Troubleshooting
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More Sigenergy fault codes

1001
Software Version Mismatch
1002
Low Insulation Resistance
1003
Over-Temperature
1004
Equipment Fault
1005
System Grounding Fault