Solar · Error codes · Huawei
2065Huawei · SUN2000-L1 single-phase hybrid-ready inverter
2065 on a Huawei SUN2000-L1 single-phase hybrid-ready inverter: Upgrade did not complete / software mismatch (Minor)
Short answer
On a Huawei inverter, 2065 means: Upgrade did not complete / software mismatch (Minor). The inverter keeps running with some functions stopped.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: Upgrade did not complete / software mismatch (Minor).
Part involved: firmware.
Likely causes:
- Software/hardware mismatch; upgrade failed; optimizer upgrade failed.
Is it safe?
| Does the inverter stop? | Partly |
|---|---|
| Severity | Warning |
The inverter keeps running with some functions stopped.
Resetting itself: no.
Manual reset: Perform upgrade again.
What you can check
- Read the full code and message on the inverter screen or in the FusionSolar 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).
- Ask your installer to re-run the firmware upgrade from FusionSolar.
What the engineer will check
- Re-run upgrade; escalate if repeated failure.
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
- SUN2000-(2KTL-6KTL)-L1 User Manual (Copy, AU) ↗ · Issue 06 · page PDF p.96 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026