Fault codes › Canadian Solar

Canadian Solar fault codes

CSI-125K-T600GL02-U

Code	Shown as	Class	Clears	Reports	Page
GRID-INTF	Grid unstable	fault		Grid instability	36
IN I-PRO	Initialization Protect ion	fault	after a manual reset	Internal device fault	36
NO-GRID				Grid loss	35
OV-BUS	DC BUS voltage is too high		needs service	DC bus overvoltage	35
OV-DC	DC voltage is too high			DC overvoltage	35
OV-G-F	Over Grid Frequency			Grid overfrequency	35
OV-G-V	Over Grid Voltage			Grid overvoltage	35
PV-MID-ISO				Low insulation resistance	36
Reve-DC				Reverse polarity	36
TEM-PRO	Temperature Protect ion				36
UN-BUS	DC BUS voltage is too low		needs service	DC bus undervoltage	35
UN-G-V	Under Grid Voltage			Grid undervoltage	35
PV ISO-PRO 01/02				Low insulation resistance	36

CSI-125KTL-GS-E

Code	Shown as	Class	Clears	Reports	Page
GRID-INTF	Grid unstable	fault		Grid instability	37
GROUND-PRO	Ground Protect ion				37
IN I-PRO	Initialization Protect ion	fault	after a manual reset	Internal device fault	37
NO-GRID				Grid loss	36
OV-BUS	DC BUS voltage is too high		needs service	DC bus overvoltage	36
OV-DC	DC voltage is too high			DC overvoltage	36
OV-G-F	Over Grid Frequency			Grid overfrequency	36
OV-G-V	Over Grid Voltage			Grid overvoltage	36
TEM-PRO	Temperature Protect ion				37
UN-BUS	DC BUS voltage is too low		needs service	DC bus undervoltage	36
UN-G-V	Under Grid Voltage			Grid undervoltage	36

CSI-185K-T600GL02/03-U / CSI-255K-T800GL02/03-U

Code	Shown as	Class	Clears	Reports	Page
12Power-FAULT	12V power supply fault	fault	after a manual reset		32
DCinj-FAULT	High DC injection current	fault	after a manual reset	High DC injection	32
DC-INTF	DC input overcurrent	fault	after a manual reset	DC overcurrent	32
DSP-B-FAULT	Comm. failure between main and slave DSP	fault	after a manual reset	Internal communication failure	32
G-IMP	High grid impedance			High grid impedance	32
IG-AD	Grid current sampling fail	fault	after a manual reset	Measurement signal error	32
IGBT-OV-I	Over IGBT current	fault	after a manual reset	Inverter overcurrent	32
IGFOL-F	Grid current tracking fail	fault	after a manual reset	Grid current tracking failure	32
INI-FAULT	Initialization system fault	fault	after a manual reset	Internal device fault	32
NO-GRID	No grid voltage			Grid loss	32
OV-BUS	Over DC bus voltage		needs service	DC bus overvoltage	32
OV-DCA-I	DC input overcurrent	fault	after a manual reset	DC overcurrent	32
OV-G-I	Over grid current	fault	after a manual reset	AC overcurrent	32
OV-TEM	Over Temperature			Inverter overtemperature, High ambient temperature	32
RelayChk-FAIL	Relay check fail	fault	after a manual reset	Self-test failure	32
Reve-DC	One of the DC string is reversely connected			Reverse polarity	32
GRID-INTF01/02	Grid interference	fault	after a manual reset	Grid instability	32
ILeak-PRO 01/02/03/04	Leakage current protection	fault		High leakage current	32
OV-DC01/02/03/04	Over DC voltage			DC overvoltage	32
OV-G-F01/02	Over grid frequency			Grid overfrequency	32
OV-G-V01/02/03/04	Over grid voltage				32
PV ISO-PRO 01/02	PV isolation protection			Low insulation resistance	32
UN-BUS01/02	Under DC bus voltage			DC bus undervoltage	32
UN-G-F01/02	Under grid frequency			Grid underfrequency	32
UN-G-V01/02	Under grid voltage				32

CSI 23/28KTL-CT/US-480

Code	Class	Production	Clears	Reports	Page
Arcboard Err	fault	stops	after a manual reset		74
ARC Protect	fault	stops	after a manual reset	Arc fault detected	74
CommErr	warning		by itself	Internal communication failure	71
EepromErr	warning		by itself	Internal memory error	71
ExtFanErr	warning		by itself	Fan fault alarm	71
GFCIErr	fault	stops	by itself	High leakage current	73
GridF.OutLim	fault	stops	by itself	Grid frequency out of range, Grid loss	72
GridV.OutLim	fault	stops	by itself	Grid voltage out of range	72
IsolationErr	fault	stops	by itself	Low insulation resistance	73
PV1 (2) Reverse	fault	stops		Reverse polarity	73
PVVoltOver	fault	stops	by itself	DC overvoltage	73
TempOver	fault	stops	by itself	Inverter overtemperature	71
TempSensorErr	warning		after a manual reset	Abnormal temperature reading	70
IntFault0010-0150	fault	stops	after a manual reset	Internal device fault	74
IntProtect0010-0620	fault	stops	by itself	Internal device fault	74

CSI-25/30/36/40K-T480GL01-UB

Code	Shown as	Class	Clears	Reports	Page
ARC-FAULT		fault	after a manual reset	Arc fault detected	42
GRID-INTF	Grid unstable	fault		Grid instability	42
INI-FAULT	Initialization Protect ion	fault	after a manual reset	Internal device fault	42
NO-GRID				Grid loss	41
OV-BUS	DC BUS voltage is too high		needs service	DC bus overvoltage	41
OV-DC	DC voltage is too high			DC overvoltage	41
OV-G-F	Over Grid Frequency			Grid overfrequency	41
OV-G-V	Over Grid Voltage			Grid overvoltage	41
OV-TEM	Temperature Protect ion			Inverter overtemperature, High ambient temperature	42
UN-BUS	DC BUS voltage is too low		needs service	DC bus undervoltage	41
UN-G-V	Under Grid Voltage			Grid undervoltage	41
PV ISO-PRO 01/02	Ground Protect ion			Low insulation resistance	42

CSI-25/30/36/40KTL-GS-FL

Code	Shown as	Class	Clears	Reports	Page
ARC-FAULT		fault	after a manual reset	Arc fault detected	32
GRID-INTF	Grid unstable	fault		Grid instability	32
GROUND-PRO	Ground Protection				32
IN I-PRO	Initialization Protection	fault	after a manual reset	Internal device fault	32
NO-GRID				Grid loss	31
OV-BUS	DC BUS voltage is too high		needs service	DC bus overvoltage	31
OV-DC	DC voltage is too high			DC overvoltage	31
OV-G-F	Over Grid Frequency			Grid overfrequency	31
OV-G-V	Over Grid Voltage			Grid overvoltage	31
TEM-PRO	Temperature Protection				32
UN-BUS	DC BUS voltage is too low		needs service	DC bus undervoltage	31
UN-G-V	Under Grid Voltage			Grid undervoltage	31

CSI-50/60/66K-T480GL01-UB

Code	Shown as	Class	Clears	Reports	Page
ARC-FAULT		fault	after a manual reset	Arc fault detected	39
GRID-INTF	Grid unstable	fault		Grid instability	39
INI-FAULT	Initialization Protect ion	fault	after a manual reset	Internal device fault	39
NO-GRID				Grid loss	38
OV-BUS	DC BUS voltage is too high		needs service	DC bus overvoltage	38
OV-DC	DC voltage is too high			DC overvoltage	38
OV-G-F	Over Grid Frequency			Grid overfrequency	38
OV-G-V	Over Grid Voltage			Grid overvoltage	38
OV-TEM	Temperature Protect ion			Inverter overtemperature, High ambient temperature	39
UN-BUS	DC BUS voltage is too low		needs service	DC bus undervoltage	38
UN-G-V	Under Grid Voltage			Grid undervoltage	38
PV ISO-PRO 01/02	Ground Protect ion			Low insulation resistance	39

CSI-50/60/66KTL-GS-FL

Code	Shown as	Class	Clears	Reports	Page
ARC-FAULT		fault	after a manual reset	Arc fault detected	27
GRID-INTF	Grid unstable	fault		Grid instability	27
GROUND-PRO	Ground Protection				27
IN I-PRO	Initialization Protection	fault	after a manual reset	Internal device fault	27
NO-GRID				Grid loss	26
OV-BUS	DC BUS voltage is too high		needs service	DC bus overvoltage	26
OV-DC	DC voltage is too high			DC overvoltage	26
OV-G-F	Over Grid Frequency			Grid overfrequency	26
OV-G-V	Over Grid Voltage			Grid overvoltage	26
TEM-PRO	Temperature Protection				27
UN-BUS	DC BUS voltage is too low		needs service	DC bus undervoltage	26
UN-G-V	Under Grid Voltage			Grid undervoltage	26

CSI-75/80/90/100K-T480GL02-U

Code	Shown as	Class	Clears	Reports	Page
ARC-FAULT		fault	after a manual reset	Arc fault detected	36
GRID-INTF	Grid unstable	fault		Grid instability	36
INI-FAULT	Initialization Protect ion	fault	after a manual reset	Internal device fault	36
NO-GRID				Grid loss	36
OV-BUS	DC BUS voltage is too high		needs service	DC bus overvoltage	36
OV-DC	DC voltage is too high			DC overvoltage	36
OV-G-F	Over Grid Frequency			Grid overfrequency	36
OV-G-V	Over Grid Voltage			Grid overvoltage	35
OV-TEM	Temperature Protect ion			Inverter overtemperature, High ambient temperature	36
Reve-DC				Reverse polarity	36
UN-BUS	DC BUS voltage is too low		needs service	DC bus undervoltage	35
UN-G-V	Under Grid Voltage			Grid undervoltage	35
PV ISO-PRO 01/02	Ground Protect ion			Low insulation resistance	36

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