Solar · Error codes · myenergi
58myenergi · libbi
58 on a myenergi libbi: Generation CT polarity reversed. INSTALLER ONLY: correct CT orientation
Short answer
On a myenergi battery, 58 means: Generation CT polarity reversed. INSTALLER ONLY: correct CT orientation. The battery keeps running. An engineer is needed to fix the cause.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: Generation CT polarity reversed. INSTALLER ONLY: correct CT orientation.
Is it safe?
| Does the battery stop? | No |
|---|---|
| Severity | Warning |
| Engineer needed? | Yes |
The battery keeps running.
Resetting itself: no.
Manual reset: reboot (owner) / installer.
What you can check
- Read and note the exact code or light pattern and the time (photo or app screenshot). (myenergi app / libbi).
- Contact your installer - CT orientation is installer-only.
- Check the battery/inverter AC isolator and the consumer-unit breaker are ON. Do not keep resetting a breaker that trips again straight away.
- Never open the battery, inverter or gateway casing and never touch DC cables, connectors or battery terminals.
What the engineer will check
- Correct generation CT orientation.
Who to ask for: battery storage installer.
Certification: myenergi-approved libbi installer for 'INSTALLER ONLY' steps; MCS battery certification.
What you might notice
Sources
- myenergi Help Centre - Other libbi Codes (status codes 51-107, 183-187, F00-F18) ↗ · Help Centre, updated 2025-11-19 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026