Solar · Error codes
Huawei 2064 Device Fault - can it be fixed?
Short answer
2064 is an unrecoverable internal circuit fault (cause IDs 1-12 cover boost, control, residual-current sensor, EEPROM, relay and DC bus faults). Huawei's step is to switch off the AC output and DC input switches, wait five minutes and switch back on; if it persists, the inverter usually needs warranty repair (L1 manual Issue 06, checked 24 September 2026).
Last checked 24 September 2026 · 1 source
In more detail
- The switch-off sequence is for installers unless shown.
- Note the cause ID from FusionSolar for the installer.
The facts, dated
- 01Huawei: 2064 = an unrecoverable fault has occurred on a circuit inside the SUN2000.
manufacturer · UK · checked 24 September 2026 · solar.huawei.com
Sources
- solar.huawei.com — solar.huawei.com/-/media/Solar/attachment/pdf/au/service/residential/SUN2000-2-6…
Last checked: 24 September 2026