100011 on an AlphaESS SMILE-G3: Over_Temperature - inverter over-temperature
Short answer
On an AlphaESS inverter, 100011 means: Over_Temperature - inverter over-temperature. The inverter keeps running with some functions stopped.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: Over_Temperature - inverter over-temperature.
Likely causes:
- Poor heat dissipation around the inverter or installation not meeting clearance requirements.
Is it safe?
| Does the inverter stop? | Partly |
|---|---|
| Severity | Fault — clears by itself when the condition goes |
The inverter keeps running with some functions stopped.
Resetting itself: yes - after cooling.
Manual reset: Restart of the inverter by installer (power-down/power-up sequence) if it does not clear.
What you can check
- Read the code in the AlphaCloud app/web portal (or the LED pattern on the unit) and note it with the time. Check the inverter's AC isolator and the consumer-unit breaker for the inverter are ON. Report persistent or repeating codes to your installer - AlphaESS says 'call the service' if it does not clear. Check nothing has been stacked against or covering the inverter and that it is not in direct sun behind glass.
What the engineer will check
- Check mounting clearances, direct sun, ventilation; check fan/heatsink.
Who to ask for: MCS PV/battery installer familiar with AlphaESS.
Certification: MCS-certified solar PV installer (MIS 3002) or competent electrician (BS 7671 / Part P in England & Wales); DC work only by PV-trained installer.
What you might notice
Sources
- Installation, Operation & Maintenance Manual of SMILE-G3-S3.6/S5/B5 (V01, 14.08.2023) ↗ · V01 · page p.82 (printed) · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026