Solar · Error codes · Solis
LmtByEPMSolis · S6-EH1P L-PLUS 48 V hybrids
LmtByEPM on a Solis S6-EH1P L-PLUS 48 V hybrids: The device's output is under control (export limit)
Short answer
On a Solis inverter, LmtByEPM means: The device's output is under control (export limit). The inverter keeps running.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: The device's output is under control (export limit).
Part involved: export power manager.
Likely causes:
- Export limit / external EPM/meter or third-party control active.
Is it safe?
| Does the inverter stop? | No |
|---|---|
| Severity | Information only |
| Engineer needed? | No |
The inverter keeps running.
Resetting itself: yes.
Manual reset: No action needed.
What you can check
- Read the full code and message on the inverter screen or in the SolisCloud app and note the date/time for your installer.
- Check the inverter's AC isolator next to the inverter and the solar/battery breaker in the consumer unit are ON (do not reset a breaker that trips again - call your installer).
- Normal if your system has an export limit set by the network operator (e.g. G99 limit).
What the engineer will check
- Verify export limit settings and meter readings.
Who to ask for: Qualified electrician / MCS PV installer.
Certification: Firmware/config change via installer portal; no special certification but installer access normally required.
What you might notice
Sources
- User Manual for S6 Series Hybrid Inverter S6-EH1P(3-8)K-L-PLUS ↗ · Version 1.0 · page 51 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026