All-in-one Solar Energy Storage Inverter Controller
36
6.2 Fault code meaning
Fault code
Fault name
Whether it
affects the
output or not
Description
【01】
BatVoltLow
Yes
Battery undervoltage alarm
【02】
BatOverCurrSw
Yes
Battery discharge average current
overcurrent software protection
【03】
BatOpen
Yes
Battery not-connected alarm
【04】
BatLowEod
Yes
Battery undervoltage stop discharge alarm
【05】
BatOverCurrHw
Yes
Battery overcurrent hardware protection
【06】
BatOverVolt
Yes
Charging overvoltage protection
【07】
BusOverVoltHw
Yes
Bus overvoltage hardware protection
【08】
BusOverVoltSw
Yes
Bus overvoltage software protection
【09】
PvVoltHigh
No
PV overvoltage protection
【10】
PvBuckOCSw
No
Buck overcurrent software protection
【11】
PvBuckOCHw
No
Buck overcurrent hardware protection
【12】
bLineLoss
No
Mains power down
【13】
OverloadBypass
Yes
Bypass overload protection
【14】
OverloadInverter
Yes
Inverter overload protection
【15】
AcOverCurrHw
Yes
Inverter overcurrent hardware protection
【17】
InvShort
Yes
Inverter short circuit protection
【19】
OverTemperMppt
No
Buck heat sink over temperature protection
【20】
OverTemperInv
Yes
Inverter heat sink over temperature
protection
【21】
FanFail
Yes
Fan failure
【22】
EEPROM
Yes
Memory failure
【23】
ModelNumErr
Yes
Model setting error
【26】
RlyShort
Yes
Inverted AC Output Backfills to Bypass AC
Input
【29】
BusVoltLow
Yes
Internal battery boost circuit failure