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GoodWe Technologies Co., Ltd. inverter error codes

GoodWe Technologies Co., Ltd. · An established brand in the UK. 34 codes across 2 product families, each taken from the manufacturer’s manuals. GoodWe Technologies Co., Ltd. technical support ↗

Find a GoodWe Technologies Co., Ltd. engineer →34 codes · reviewed 24 September 2026

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Type the code on your display or a word from its meaning. Each code opens its own page with what it means, whether it is safe and what you can check.

34 codes

CodeMeaningStops?Homeowner check?
00
GFCI Check Timeout - GFCI value too high during check.
YesYes
01
AC HCT Check Failure - Intermittent fault from external factors (e.g. magnetic fields) or possible faulty internal component.
YesYes
02ETU
AFCI Fault - Intermittent fault from external factors (e.g. magnetic fields) or possible faulty internal component.
YesYes
04
DCI Consistency Failure - Intermittent fault from external factors (e.g. magnetic fields) or possible faulty internal component.
YesYes
06
GFCI Consistency Failure / Device check failure - Intermittent fault from external factors (e.g. magnetic fields) or possible faulty internal component.
YesYes
07
Relay Device Failure - Intermittent fault from external factors (e.g. magnetic fields) or possible faulty internal component.
YesYes
08
AC HCT Failure - AC output current sensor failure
YesYes
09
Utility Loss - Grid power failure
YesYes
10
Ground I failure - Neutral & ground not well connected on AC terminals
YesYes
11
DC bus high - Internal DC bus voltage too high
YesYes
12
Internal Fan Failure (Back-Up Over Load for ES) - ES: backup loads exceed max output
PartlyYes
13
Over Temperature - Ambient too high for extended period
YesYes
14
Auto test Failure - Auto test failure (Italy-type self-test).
Not statedYes
14ETU
Phase order Fault - AC phases incorrectly connected (three-phase ET).
YesYes
15
PV overvoltage - String open-circuit voltage higher than max DC input voltage.
YesYes
17
Vac Failure - Grid power failure
YesYes
22
Fac Consistency Failure - Intermittent fault from external factors (e.g. magnetic fields) or possible faulty internal component.
YesYes
23
Vac Consistency Failure - Intermittent fault from external factors (e.g. magnetic fields) or possible faulty internal component.
YesYes
25
Relay check failure - Neutral & ground not well connected
YesYes
29
Fac Failure - Grid power failure
YesYes
30
EEPROM R/W Failure - Intermittent external factor
Not statedYes
31
Internal Communication Failure - Intermittent fault from external factors (e.g. magnetic fields) or possible faulty internal component.
YesYes
afci-fault
AFCI-Fault
YesYes
DCI
DC Injection high - DC component in AC output above country limit.
YesYes
fac-failure
Fac Failure
YesYes
ground-i-failure
Ground I Failure
YesYes
ISO
ISO failure (Isolation Failure) - PV ground cable not/poorly connected
YesYes
isolation-failure
Isolation Failure
YesYes
no-display
No display
YesYes
over-temperature
Over Temperature
YesYes
pv-over-voltage
PV Over Voltage
YesYes
relay-check-failure
Relay-Check Failure
YesYes
utility-loss
Utility Loss
YesYes
vac-failure
Vac Failure
YesYes