Solar · Error codes · GoodWe Technologies Co., Ltd.
afci-faultGoodWe Technologies Co., Ltd. · GoodWe DNS (2.9-6 kW)
afci-fault on a GoodWe Technologies Co., Ltd. GoodWe DNS: AFCI-Fault
Short answer
On a GoodWe Technologies Co., Ltd. inverter, afci-fault means: AFCI-Fault. The inverter stops until the fault clears or is reset. An engineer is needed to fix the cause.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: AFCI-Fault.
Part involved: AFCI-Fault.
Likely causes:
- Turn off DC switch; ensure DC connectors are the right model and properly connected; turn on DC switch; contact service.
Is it safe?
| Does the inverter stop? | Yes |
|---|---|
| Severity | Fault — needs a manual reset once the cause is fixed |
| Engineer needed? | Yes |
The inverter stops until the fault clears or is reset.
Resetting itself: unknown.
Manual reset: See checks.
What you can check
- Read the message on the inverter LCD or in the SEMS Portal app and note it for your installer.
- An arc fault was detected - do not touch the DC cables or connectors. Contact your installer.
What the engineer will check
- Inspect DC connectors (correct matching model), crimps, cables; restart via DC switch.
Who to ask for: GoodWe-trained PV installer.
Certification: Qualified electrician (BS 7671; MCS-certified PV installer for work on the PV array/DC side).
What you might notice
Sources
- User Manual Grid-Tied PV Inverter DNS Series 2.9-6kW ↗ · V1.3-2026-09-10 · page 39 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026