Solar · Error codes · Shenzhen SOFARSOLAR Co., Ltd.
ID81Shenzhen SOFARSOLAR Co., Ltd. · SOFAR HYD 3000-6000-ES
ID81 on a Shenzhen SOFARSOLAR Co., Ltd. SOFAR HYD 3000-6000-ES: Internal temperature too high (derating)
Short answer
On a Shenzhen SOFARSOLAR Co., Ltd. inverter, ID81 means: Internal temperature too high (derating). 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: Internal temperature too high (derating).
Part involved: Over TempDerating.
Likely causes:
- As ID57-59.
Is it safe?
| Does the inverter stop? | Partly |
|---|---|
| Severity | Warning |
| Engineer needed? | Yes |
The inverter keeps running with some functions stopped.
Resetting itself: unknown.
Manual reset: See checks.
What you can check
- Read the ID code and name on the inverter LCD (Event List) or in the SOFAR/SolarMAN app and note it for your installer.
- Check nothing is stacked against, covering or boxing in the inverter and that air can flow around it; keep the area clear.
What the engineer will check
- Check siting/ventilation.
Who to ask for: Sofar-trained PV/battery installer.
Certification: Qualified electrician (BS 7671; MCS-certified PV installer for work on the PV array/DC side).
What you might notice
Sources
- SOFAR HYD 3K~6K-ES User manual (Energy storage integrated inverter HYD 3000/3600/4000/4600/5000/6000-ES) ↗ · SOFAR HYD 3K~6K-ES User manual (midsummer.ie copy, undated) · page 43 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026