57 on a myenergi libbi: harvi Lost Comms - harvi not heard for 24 h+
Short answer
On a myenergi battery, 57 means: harvi Lost Comms - harvi not heard for 24 h+. The battery keeps running with some functions stopped.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: harvi Lost Comms - harvi not heard for 24 h+.
Likely causes:
- harvi wireless sensor out of range, off or paired incorrectly.
Is it safe?
| Does the battery stop? | Partly |
|---|---|
| Severity | Warning |
The battery keeps running with some functions stopped.
Resetting itself: when harvi reconnects.
Manual reset: Reboot libbi controller/inverter per myenergi article.
What you can check
- Check the harvi light is still flashing green (myenergi action). Keep the area around the harvi and the libbi controller clear. Note the code shown on the libbi controller screen or in the myenergi app. Check the consumer-unit breaker feeding the libbi and the libbi AC isolator are ON. Reboot the libbi controller from its menu if myenergi's article says so. If the code stays, contact your installer or myenergi Technical Support.
What the engineer will check
- Reposition harvi, change radio channel, re-pair, fit high-gain antenna, extend CT cable (installer).
Who to ask for: MCS battery installer / electrician trained on myenergi libbi.
Certification: MCS battery installer (MIS 3012) or competent electrician trained on the product; IET Code of Practice for Electrical Energy Storage Systems.
What you might notice
Sources
- myenergi Help Centre - Other libbi Codes (status codes 51-107, 183-187, F00-F18) ↗ · Help Centre article updated 2025-11-19 · page table · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026