NOTE: For any fault codes not listed below, request information from James Wang (shijie.wang@ginlong.com).


1. Alarm Codes for Solis 1P(1-6)K-4G-US and Solis-(6-10)K-4G-US


No Information
(Blank Screen)
• Input voltage low/missing
• Polarity reversed
• Main board damaged
Test – DC switch OFF
• Check PV connections
• Check polarity
• Check voltage >120V Single, >350V three
Test – DC Switch ON
• Check voltage >120V Single, >350V three
• If DC voltage is “0” replace inverter
Initializing
(Inverter stuck
in this mode)
• Inverter is waiting for
driving signal
Test – DC switch OFF
• Check PV connections
• Check polarity
• Check voltage >120V Single, >350V three
Test – DC Switch ON
• Check voltage >120V Single, >350V three
• A cable may have been damaged or loosened
in shipping replace inverter
OV-G-V: Over
Grid Voltage
• Inverter detects grid
voltage as too high
Test – DC switch OFF
• Check AC at the inverter
• If AC measures high, adjust upper limit with
permission from utility
Test – DC Switch ON, full power
• Check AC at inverter test points
• Compare with LCD
• If AC measures high, cables between inverter
and interconnect are too small
• Check ampacity and voltage drop calculations
UN-G-V: Under
Grid Voltage
• Inverter detects grid
voltage as too low
Test – DC switch OFF
• Check AC at the inverter test points
• If AC measures low, adjust lower limit with
permission from utility
• Check LCD voltage reading, may be a bad
measurement circuit
Test – DC Switch ON
• Check grid standard
• Replace inverter
OV-G-F: Over
Grid Frequency
• Inverter detects grid
Frequency as too high
Test – DC switch OFF
• Check frequency at the inverter test points
• If Frequency measures high, adjust upper
limit with permission from utility
• Check LCD reading, may be a bad
measurement circuit
Test – DC Switch ON
• Check grid standard
• Replace inverter
NO-GRID• Inverter does not
detect the grid
Test – DC switch OFF
• Check AC at the inverter test points
• L-L, L-GND
• Do NOT tell me 240VAC
• Check LCD reading, may be a bad
measurement circuit
Test – DC Switch ON
• Check grid standard
• Replace inverter
OV-DC: DC
voltage is too
high
• Inverter detects High DCVTest – DC switch OFF
• Check DC at the inverter test points
• If DCV is high, too many panels in the string
Test – DC Switch ON
• Check LCD reading, may be a bad
measurement circuit
• Replace inverter
OV-BUS: DC
BUS voltage is
too high
• Inverter detects High
DCV on internal bus
Test
• Measure DC and AC voltages
• Compare with LCD
• Replace inverter
• Internal damage
• Wire came loose during shipping
UN-BUS: DC
BUS voltage is
too low
• Inverter detects low DCV

on internal bus

Test
• Measure DC and AC voltages
• Compare with LCD
• Replace inverter
• Internal damage
• Wire came loose during shipping
GRID-INTF:
Grid unstable
• Inverter detects grid
instability, internal fault
current high
Test – With DC Switch OFF
• Measure AC voltage
• Test AC line for THD
• Test – With DC Switch ON
Test AC line for THD
• Multiple inverters/turn one off
• Impedance matching adjustment or box
• Internal damage
• Wire came loose in shipping  
INI-FAULT:
Initialization
Protection    
• Master and Slave DSP
have different values
Reset Inverter
• DC switch OFF
• Wait until all lights/LCD turn off
• DC switch ON
• Replace inverter
OV-TEM:
Temperature
Protection
• Inverter detects high
ambient temperature >60C
Inspect installation
• Check heatsink for obstructions/ventilation
• Is inverter in direct sunshine
• Measure ambient temperature near inverter
• If temp is in range replace inverter
PV ISO-PRO
01/02:
Ground
Protection
• Inverter detects low DC
insulation resistance
Inspect installation
• Reset inverter
• Note weather conditions when alarm occurs
• Measure insulation resistance
• If normal, measure in SAME weather as alarm
• Physically check cables
• Replace inverter
AFCI Check
FAULT
• AFCI module self
check fault
Reset Inverter
• DC switch OFF
• Wait until all lights/ LCD turn off
• DC switch ON
• Replace inverter
ARC-FAULT• Inverter detects arc
in DC circuit
Inspect installation
• Physically check cables
• Inspect panel junction boxes
• Inspect cable connections
• Reset inverter
• Replace inverter
IG-AD

• Grid current sampling fault

• Fault caused by internal component failure --> Automatic RMA.

 

 2. Alarm Codes for Solis-(1-5)K-2G-US


OV-G-VOVER GRID VOLTAGE
UN-G-VUNDER GRID VOLTAGE
OV-G-FOVER GRID FREQUENCY
UN-G-FUNDER GRID FREQUENCY
G-IMPHIGH GRID IMPEDANCE
NO-GRIDNO GRID VOLTAGE
OV-DCOVER DC VOLTAGE
OV-BUSOVER DC BUS VOLTAGE
UN-BUSUNDER DC BUS VOLTAGE
GRID-INTFGRID INTERFERENCE
INI-FAULTINITIALIZATION SYSTEM FAULT
OV-TEMOVER TEMPERATURE
GROUND-FAULTGROUND FAULT
ILEAK-FAULTHIGH GRID LEAKAGE CURRENT
RELAY-FAULTRELAY CHECK FAULT
DCINJ-FAULTHIGH DC INJECTION CURRENT
AFCI CHECK FAULTAFCI MODULE SELF CHECK FAULT
ARC-FAULTARC DETECTED IN DC CURRENT


3. ALARM CODES FOR Solis-(25-40)K-US and Solis-(50-66)K-US


Alarm MessageFailure DescriptionSolution
No PowerInverter No Power on LCD1.Check PV input connections
2.Check DC input voltage
(single phase >120V, three phase >350V)
3.Check if PV+/- is reversed
LCD show initializing
all the time
can not start-up1.Check if the connector on main
board or power board are fixed.
2.Check if the DSP connector to
power board are fixed.
OV-G-VOver grid voltage1.Resistant of AC cable is too high.
Change bigger size grid cable
2.Adjust the protection limit if it’s
allowed by electrical company
UN-G-VUnder grid voltage1.Use user define function to adjust the
protection limit if it’s allowed by
electrical company.
OV-G-FOver grid frequency1.Use user define function to adjust the
protection limit if it’s allowed by
electrical company.
UN-G-FUnder grid frequency1.Use user define function to adjust the
protection limit if it’s allowed by
electrical company.
G-IMPHigh grid impedance1.Use user define function to adjust the
protection limit if it’s allowed by
electrical company.
No-GridNo grid voltage1.Check connections and grid switch.
2.Check the grid voltage inside inverter
terminal.
OV-DCOver DC voltage1.Reduce the module number in series
OV-BUSOver DC bus voltage1.Check inverter inductor connection
2.Check driver connection
UN-BUSUnder DC bus voltage1.Check inverter inductor connection
2.Check driver connection
GRID-INTFGrid interference1.Restart inverter
2.Change power board
OV-TEMOver Temperature1.Check inverter surrounding ventilation.
2.Check if there’s sunshine direct on
inverter in hot weather.
INI-FaultInitialization system fault1.Restart inverter or contact installer.
Ground-FaultGround fault1.Measure the insulation resistance and
locate and check isolation of PV cable.
2.Change the main board if the
resistance are higher than 1MΩ
ILeak-FaultHigh Grid leakage current1.Check AC and DC connection
2.Check inverter inside cable connection.
Relay-FaultRelay check fault1.Restart inverter or contact installer.
DCinj-FaultHigh DC injection current1.Restart inverter or contact installer.
AFCI Check FaultAFCI module self check fault1.Restart inverter or contact installer.
Arc FaultARC detected in DC circuit1.Check if there’s arc in PV connection
and restart inverter.
LimbyTemp    Temp Below 17C.  Inv Could limit power to 50%    1. Wait until internal temperature rises above 17C