1031 on a Sigenergy SigenStor: Built-in GATEWAY port overcurrent. Official suggestion (summarised): Reduce load; equalise cable lengths in parallel systems
Short answer
On a Sigenergy inverter, 1031 means: Built-in GATEWAY port overcurrent. Official suggestion (summarised): Reduce load; equalise cable lengths in parallel systems. The inverter keeps running with some functions stopped. An engineer is needed to fix the cause.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: Built-in GATEWAY port overcurrent. Official suggestion (summarised): Reduce load; equalise cable lengths in parallel systems.
Likely causes:
- Excessive current through port; uneven cable lengths in parallel systems.
Is it safe?
| Does the inverter stop? | Partly |
|---|---|
| Severity | Fault — clears by itself when the condition goes |
| Engineer needed? | Yes |
The inverter keeps running with some functions stopped.
Resetting itself: unknown.
Manual reset: n/a.
What you can check
- Read the alarm code, name and ID in the mySigen app.
- Report it via mySigen app Support > Troubleshooting (Sigenergy's stated route) or contact your installer.
- Reduce household load.
What the engineer will check
- Check parallel cable lengths.
- Sub-IDs: ID1-ID3 grid-side phase A/B/C; ID4-ID6 load-side phase A/B/C.
Who to ask for: battery storage / PV inverter.
Certification: Sigenergy-trained installer; MCS PV/battery installer for certified installs; electrical work to BS 7671.
What you might notice
Sources
- Sigenergy Alarm List (Version 05) ↗ · 05 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026