CPS fault codes

CPS SCA25KTL-DO/US-208

Code	Shown as	Class	Production	Clears	Reports	Page
Arcboard Err		fault		after a manual reset		128
ARC Protect		fault		after a manual reset		128
CommErr		warning		by itself	Internal communication failure	125
EepromErr		warning		by itself		125
ExtFanErr		warning		by itself	Fan fault alarm	125
GFCIErr	leakage current high	fault	stops		High leakage current	127
GridF.OutLim		fault	stops	after a manual reset	Grid frequency out of range	126
GridV.OutLim		fault	stops	after a manual reset	Grid voltage out of range	126
IsolationErr	Insulation resistance low	fault			Low insulation resistance	127
PV2VoltOver	PVx Over Volt x=1,2,3	fault			DC overvoltage	127
PVx Over current	PVx Over current x=1,2,3	fault	stops	after a manual reset	DC overcurrent	127
PVxReverse	PVx input reverse connection x=1,2,3	fault	stops		Reverse polarity	127
TempOver	Over-temperature protection	fault	stops	by itself	Inverter overtemperature	126
TempSensorErr		warning		after a manual reset	Abnormal temperature reading	125
Fault0020	Bus over volt Hardware	fault		after a manual reset	DC bus overvoltage	128
Fault0060	CPLD Fault	fault		after a manual reset	Internal device fault	128
Fault0080	Bus Hardware over current fault	fault		after a manual reset	Internal overcurrent or overvoltage	128
Fault0090	Dynamic leakage current high	fault			High leakage current	128
Fault0100	Grid relay fault	fault		after a manual reset		128
Fault0110	Bus imbalance	fault			Neutral point voltage imbalance	129
Fault0130	Bus over total voltage	fault		after a manual reset	DC bus overvoltage	129
Fault0150	Open-loop self-check failure	fault		after a manual reset	Self-test failure	129
Protect0020	Grid relay error	fault	stops	after a manual reset		126
Protect0030	Inverter Over Current	fault	stops	after a manual reset	Inverter overcurrent	126
Protect0070	Bus imbalance	fault			Neutral point voltage imbalance	126
Protect0090	Bus over voltage	fault	stops	after a manual reset	DC bus overvoltage	126
Protect0100	The sensor fault of leakage current	fault	stops	after a manual reset		127
Protect0110	BUS over voltage (firmware)	fault	stops	after a manual reset	DC bus overvoltage	127
Protect0150	Mini MCU Fault	fault	stops	after a manual reset	Internal device fault	127
Protect0170	DCI high	fault			High DC injection	126
Protect0180	The sampling offset of DCI	fault	stops		Current sensor offset	126
Protect0230	Inverter open-loop self-test fault	fault		after a manual reset	Self-test failure	128
Warn0030	EepromErr	warning		by itself	Data storage failure	124
Warn0050	TempSensorErr	warning		after a manual reset		124

CPS SCA25KTL-DO-R/US-480

Code	Shown as	Class	Production	Clears	Reports	Page
Arcboard Err				after a manual reset		110
ARC Protect				after a manual reset		110
CommErr		warning		by itself	Internal communication failure	104
ExtFanErr				by itself	Fan fault alarm	105
GFCIErr	leakage current high		stops		High leakage current	108
GridF.OutLim			stops	after a manual reset	Grid frequency out of range	107
GridV.OutLim			stops	after a manual reset	Grid voltage out of range	107
IntFanErr				by itself	Fan fault alarm	105
IsolationErr	Insulation resistance low				Low insulation resistance	108
PV Reverse	PV input reverse connection				Reverse polarity	109
PVVoltOver					DC overvoltage	109
TempOver	Over-temperature protection		stops	by itself	Inverter overtemperature	107
Fault0020	Bus over volt Hardware	fault		after a manual reset	DC bus overvoltage	111
Fault0060	CPLD Fault	fault		after a manual reset	Internal device fault	111
Fault0090	Static leakage current high	fault			High leakage current	111
Fault0100	Grid relay fault	fault		after a manual reset		111
Fault0110	Bus imbalance	fault			Neutral point voltage imbalance	110
Fault0130	Bus over total voltage	fault		after a manual reset	DC bus overvoltage	110
Fault0150	Open-loop self-check failure	fault		after a manual reset	Self-test failure	112
Protect0020	Grid relay error	fault	stops	after a manual reset		107
Protect0030	Inverter Over Current	fault	stops	after a manual reset	Inverter overcurrent	107
Protect0070	Bus imbalance	fault			Neutral point voltage imbalance	106
Protect0090	Bus over voltage	fault	stops	after a manual reset	DC bus overvoltage	106
Protect0100	The sensor fault of leakage current	fault	stops	after a manual reset		109
Protect0110	BUS over voltage (firmware)	fault	stops	after a manual reset	DC bus overvoltage	109
Protect0150	Mini MCU Fault	fault	stops	after a manual reset	Internal device fault	109
Protect0170	DCI high	fault			High DC injection	107
Protect0180	The sampling offset of DCI	fault	stops		Current sensor offset	107
Protect0230	Inverter open-loop self-test fault	fault		after a manual reset	Self-test failure	110
Warn0030	EepromErr	warning		by itself	Data storage failure	106
Warn0040	DC SPD fault	warning			Surge protector alarm	106
Warn0050	TempSensorErr	warning		after a manual reset		106
Warn0100	AC SPD fault	warning	unaffected		Surge protector alarm	106

CPS SCA36KTL-DO/US-480

Code	Shown as	Class	Production	Clears	Reports	Page
Arcboard Err		fault		after a manual reset		7
ARC Protect		fault		after a manual reset		7
CommErr		warning		by itself	Communication loss	4
EepromErr		warning		by itself	Internal device fault	5
ExtFanErr		warning		by itself		3
GFCIErr	leakage current high	fault				6
GridF.OutLim		fault	stops	after a manual reset	Grid frequency out of range	5
GridV.OutLim		fault	stops	after a manual reset	Grid voltage out of range	5
IntFanErr		warning		needs service		3
IsolationErr	Insulation resistance low	fault			Low insulation resistance	6
PV2VoltOver	PVx Over Volt x=1,2,3				DC overvoltage	7
PVx Over current	PVx Over current x=1,2,3			after a manual reset	DC overcurrent	7
PVxReverse	PVx input reverse connection x=1,2,3	fault			Reverse polarity	7
TempOver	Over-temperature protection	fault	stops	by itself	Inverter overtemperature	5
TempSensorErr		warning		after a manual reset		4
Fault0020	Bus over volt Hardware	fault		after a manual reset	DC link fault	8
Fault0060	CPLD Fault	fault		after a manual reset	Internal device fault	8
Fault0080	Bus Hardware overcurrent fault	fault		after a manual reset	DC link fault	8
Fault0090	Dynamic leakage current high	fault				8
Fault0100	Grid relay fault	fault		after a manual reset		8
Fault0110	Bus imbalance	fault			DC link fault	8
Fault0130	Bus over total voltage	fault		after a manual reset	DC link fault	9
Fault0150	Open-loop self-check failure	fault		after a manual reset	Self-test failure	9
Protect0020	Grid relay error	fault	stops	after a manual reset		5
Protect0030	Inverter Over Current	fault		after a manual reset		5
Protect0070	Bus imbalance	fault			DC link fault	5
Protect0090	Bus over voltage	fault		after a manual reset	DC link fault	5
Protect0100	The sensor fault of leakage current	fault		after a manual reset	Internal device fault	7
Protect0110	BUS over voltage (firmware)	fault		after a manual reset	DC link fault	7
Protect0150	Mini MCU Fault	fault		after a manual reset	Internal device fault	6
Protect0170	DCI high	fault			High DC injection	6
Protect0180	The sampling offset of DCI	fault			Internal device fault	6
Protect0230	Inverter open-loop self-test fault	fault		after a manual reset	Self-test failure	7
Warn0030	EepromErr	warning		by itself		3
Warn0040	DC SPD	warning		needs service		3
Warn0050	TempSensorErr	warning		after a manual reset		4
Warn0100	AC SPD	warning		needs service		4

CPS SCA100K-T-US-480 / SCA50K-T-US-208

Code	Shown as	Class	Production	Clears	Reports	Page
Fault0000-0150	PV1…PV16 SwitchConnec tError	fault		after a manual reset	Abnormal PV input	144
Fault1000-1070	PV1…PV16 SwitchConnec tError	fault		after a manual reset	Abnormal PV input	144
Fault2000-2150	PV1 …PV16 ReverseInject Fault	fault	stops	after a manual reset	String reverse current	145
Fault3000-3070	PV1 …PV16 ReverseInject Fault	fault	stops	after a manual reset	String reverse current	145
Fault4000	PN Bus DropFault	fault	stops	after a manual reset		146
Fault4010	Bus High VoltageDiffere ntialFault	fault	stops	after a manual reset	Neutral point voltage imbalance	146
Fault4030	Boost OverCurrentF ault	fault	stops	after a manual reset	DC overcurrent	146
Fault4040	PV OverVoltageF ault	fault	stops	after a manual reset	DC overvoltage	145
Fault5000	PV High Current Low Voltage Fault	fault	stops	after a manual reset	Abnormal PV input	146
Fault5010	Junction Box Temperature Sensor Abnormal	fault		by itself		149
Fault5020	AC Bulkhead Connector Temperature Sensor Abnormal	fault				148
Fault5030	DC Bulkhead Connector Temperature Sensor Abnormal	fault				148
Fault5040	Power Board Temperature Sensor Abnormal	fault		by itself		148
Fault5050	Core Board Temperature Sensor Abnormal	fault		by itself		148
Fault5060	AC Bulkhead Connector Abnormal	fault		after a manual reset	Abnormal connector state	148
Fault5070	DC Bulkhead Connector Abnormal	fault	stops	after a manual reset	Abnormal connector state	148
Fault5080	AC Bulkhead Connector Warning	fault			Abnormal connector state	147
Fault5090	DC Pair Plug Terminal Warning	fault			Abnormal connector state	147
Fault5100	Bulkhead Connector and Junction Box Abnormal	fault	stops	after a manual reset	Abnormal connector state	147
Fault6000	Junction Box OverTempera tureFault	fault		by itself	Junction box overtemperature	150
Fault6010	AC Bulkhead Connector OverTempera tureFault	fault		by itself	Connector overtemperature	150
Fault6020	DC Bulkhead Connector OverTempera tureFault	fault		by itself	Connector overtemperature	149
Fault6030	Power Board OverTempera tureFault	fault		by itself	Inverter overtemperature	149
Fault6040	Core Board OverTempera tureFault	fault		by itself	Inverter overtemperature	149
Fault6050	CT Board Abnormal Communicatio n Alarm	fault		by itself	Internal communication failure	149
Fault6080	IVScanFaultB USLow	fault		by itself	DC bus undervoltage	149
Fault6100	TripToDSPCo mmunicateWa rn	fault		by itself	Internal communication failure	149
Fault7000	Bus Over Voltage Fault	fault	stops	after a manual reset	DC bus overvoltage	147
Fault7010	PID voltage stability alarm	fault		by itself	PID voltage instability	150
Fault7020	SVG voltage stability alarm	fault		by itself	Reactive compensation voltage instability	150
Fault7030	N-line abnormal alarm	fault			Abnormal neutral line	150
Fault7040	PIDOverhigh voltage Warn	fault		by itself	PID module overvoltage	150
PFault0000	Bus Sum High Fault	fault			DC bus overvoltage	151
PFault0010	Power Fault	fault		after a manual reset	Internal device fault	151
PFault0020	Bus Different High Fault	fault		after a manual reset	Neutral point voltage imbalance	151
PFault0030	Inv Relay Fault	fault		after a manual reset		151
PFault0040	Steady State GFCI Fault	fault			Ground fault alarm or trip	151
PFault0050	Bst hardware overcurrent fault	fault		after a manual reset	DC overcurrent	152
PFault0070	CPLD Clock Fault	fault		after a manual reset	Internal device fault	152
PFault0080	Inv HW Overcurr Fault	fault		after a manual reset	Inverter overcurrent	152
PFault0110	BUS HW Overvolt Fault	fault		after a manual reset	DC bus overvoltage	152
PFault0130	Internal hardware failure	fault		after a manual reset	Internal device fault	152
PFault0140	Open Loop SelfChk Fault	fault		after a manual reset	Self-test failure	152
Protect0000	Bus Sum High	fault		after a manual reset	DC bus overvoltage	130
Protect0010	Power Abn	fault		after a manual reset		130
Protect0020	Bus Volt Diff High	fault	stops	after a manual reset		130
Protect0030	Bus Soft start time out	fault	stops	after a manual reset	Inverter overcurrent	130
Protect0040	Inverter Soft start time out	fault		by itself		131
Protect0060	MPPT1 CurrHigh	fault			DC overcurrent	131
Protect0070	Grid Line Vrms OutLim	fault			Neutral point voltage imbalance	131
Protect0080	Grid Phase Vrms OutLim	fault			Grid voltage out of range	131
Protect0090	Inv Curr High	fault	stops	after a manual reset	DC bus overvoltage	131
Protect0100	Grid Freq High	fault	stops	after a manual reset		132
Protect0110	Grid Freq Low	fault	stops	after a manual reset	DC bus overvoltage	132
Protect0120	Grid Phase Abn	fault		by itself		132
Protect0130	Inv Relay Abn	fault		by itself		132
Protect0140	Over Temp Prot	fault		by itself	Inverter overtemperature	133
Protect0150	Inv Curr Offset Abn	fault	stops	after a manual reset	Internal device fault	133
Protect0160	Inv Line Volt Offset Abn	fault		by itself		133
Protect0170	DCI Curr Offset Abn	fault			High DC injection	134
Protect0180	DCI High Fault	fault	stops		Current sensor offset	134
Protect0190	ISO Low	fault			Low insulation resistance	134
Protect0200	GFCI High	fault			Ground fault alarm or trip	135
Protect0210	Freq selective Abn	fault		by itself		135
Protect0230	MiniMcu Prot	fault		after a manual reset	Self-test failure	135
Protect0240	Inv HW Overcurr	fault		by itself	Inverter overcurrent	136
Protect0250	Grid Volt Unbalance Abn	fault			Phase imbalance	136
Protect0270	Inv Curr Unbalance Abn	fault		by itself	Phase imbalance	136
Protect0300	Bus HW Overvolt	fault		by itself	DC bus overvoltage	136
Protect0310	GFCI SENSOR Abn	fault		after a manual reset		136
Protect0330	Internal hardware exception	fault		by itself	Internal device fault	137
Protect0350	MPPT2 RevConnect	fault			Reverse polarity	137
Protect0360	MPPT2 CurrHigh	fault		by itself	DC overcurrent	137
Protect0370	MPPT2 VoltHigh	fault			DC overvoltage	137
Protect0380	PV abnormal connection failure	fault			Abnormal PV input	137
Protect0390	Open Loop SelfChk Prot	fault		after a manual reset	Self-test failure	138
Protect0410	MPPT1RevCo nnect	fault			Reverse polarity	138
Protect0420	MPPT1 VoltHigh	fault			DC overvoltage	138
Protect0430	MPPT3RevCo nnect	fault			Reverse polarity	138
Protect0440	MPPT3 VoltHigh	fault			DC overvoltage	139
Protect0480	TZ Shutdown Fault	fault	stops	by itself		139
Protect0630	ARC Fault	fault		after a manual reset		139
Protect0650	Steady State GFCI Prot	fault			High leakage current	139
Protect0660	Arc Board Fault	fault		after a manual reset		140
Protect0680	MPPT3 CurrHigh	fault		by itself		140
Protect0690	Capture phase locked loop check exception	fault		after a manual reset	Grid synchronization failure	140
Protect0710	Bst Hardware overcurrent	fault		by itself	Internal overcurrent or overvoltage	140
Protect0720	Product model exception	fault		after a manual reset	Configuration error	140
Protect0730	CPLD program version exception	fault		after a manual reset	Internal device fault	141
Protect0740	CPLD Clock Err	fault		after a manual reset	Internal device fault	141
Protect0770	ARCComAbn	fault		after a manual reset	Internal communication failure	141
Protect0790	Zero-to-ground voltage anomaly protection	fault			Abnormal neutral-to-ground voltage	141
Protect0800	MPPT4 VoltHigh	fault			DC overvoltage	141
Protect0810	MPPT4RevCo nnect	fault			Reverse polarity	142
Protect0820	MPPT4 CurrHigh	fault		by itself	DC overcurrent	142
Protect0830	MPPT5 VoltHigh	fault			DC overvoltage	142
Protect0840	MPPT5RevCo nnect	fault			Reverse polarity	142
Protect0850	MPPT5 CurrHigh	fault		by itself	DC overcurrent	143
Protect0860	MPPT6 VoltHigh	fault			DC overvoltage	143
Protect0870	MPPT6RevCo nnect	fault			Reverse polarity	143
Protect0880	MPPT6 CurrHigh	fault		by itself	DC overcurrent	143
Protect1050	Core Hardware Ver Abn	fault		after a manual reset	Internal device fault	144
Protect1060	BUS Current High	fault		by itself	Inverter overcurrent	143
Protect1070	SPI Comm Abn	fault			Internal communication failure	144
Protect1110	AC Capacitor Current High	fault		by itself	AC overcurrent	144
Warn0000	Ex Fan Abn	warning		by itself	Fan fault alarm	128
Warn0010	In Fan Abn	warning		by itself	Fan fault alarm	128
Warn0020	CAN Comm Abn	warning		by itself	Internal communication failure	128
Warn0030	Eeprom Fault	warning		by itself	Data storage failure	129
Warn0040	DC lightning protector Abn	warning			Surge protector alarm	129
Warn0050	Temp Sensor Abn	warning		after a manual reset		129
Warn0100	AC lightning protector Abn	warning	unaffected		Surge protector alarm	129

CPS SCA50/60KTL-DO/US-480

Code	Shown as	Class	Production	Clears	Reports	Page
Arcboard Err		fault		after a manual reset		7
ARC Protect		fault		after a manual reset		7
CommErr		warning		by itself	Communication loss	4
EepromErr		warning		by itself	Internal device fault	5
ExtFanErr		warning		by itself		3
GFCIErr	leakage current high	fault				6
GridF.OutLim		fault	stops	after a manual reset	Grid frequency out of range	5
GridV.OutLim		fault	stops	after a manual reset	Grid voltage out of range	5
IntFanErr		warning		needs service		3
IsolationErr	Insulation resistance low	fault			Low insulation resistance	6
PV2VoltOver	PVx Over Volt x=1,2,3				DC overvoltage	7
PVx Over current	PVx Over current x=1,2,3			after a manual reset	DC overcurrent	7
PVxReverse	PVx input reverse connection x=1,2,3	fault			Reverse polarity	7
TempOver	Over-temperature protection	fault	stops	by itself	Inverter overtemperature	5
TempSensorErr		warning		after a manual reset		4
Fault0020	Bus over volt Hardware	fault		after a manual reset	DC link fault	8
Fault0060	CPLD Fault	fault		after a manual reset	Internal device fault	8
Fault0080	Bus Hardware overcurrent fault	fault		after a manual reset	DC link fault	8
Fault0090	Dynamic leakage current high	fault				8
Fault0100	Grid relay fault	fault		after a manual reset		8
Fault0110	Bus imbalance	fault			DC link fault	8
Fault0130	Bus over total voltage	fault		after a manual reset	DC link fault	9
Fault0150	Open-loop self-check failure	fault		after a manual reset	Self-test failure	9
Protect0020	Grid relay error	fault	stops	after a manual reset		5
Protect0030	Inverter Over Current	fault		after a manual reset		5
Protect0070	Bus imbalance	fault			DC link fault	5
Protect0090	Bus over voltage	fault		after a manual reset	DC link fault	5
Protect0100	The sensor fault of leakage current	fault		after a manual reset	Internal device fault	7
Protect0110	BUS over voltage (firmware)	fault		after a manual reset	DC link fault	7
Protect0150	Mini MCU Fault	fault		after a manual reset	Internal device fault	6
Protect0170	DCI high	fault			High DC injection	6
Protect0180	The sampling offset of DCI	fault			Internal device fault	6
Protect0230	Inverter open-loop self-test fault	fault		after a manual reset	Self-test failure	7
Warn0030	EepromErr	warning		by itself		3
Warn0040	DC SPD	warning		needs service		3
Warn0050	TempSensorErr	warning		after a manual reset		4
Warn0100	AC SPD	warning		needs service		4

CPS SCH100/125KTL-DO/US-600

Code	Shown as	Class	Production	Clears	Reports	Page
CommErr		warning		by itself	Internal communication failure	74
ExtFanErr		warning		by itself	Fan fault alarm	74
GFCIErr	leakage current high	fault	stops		High leakage current	76
GridF.OutLim		fault	stops	after a manual reset	Grid frequency out of range	76
GridV.OutLim		fault	stops	after a manual reset	Grid voltage out of range	76
IntFanErr		warning		by itself	Fan fault alarm	75
IsolationErr	insulation resistance low	fault			Low insulation resistance	76
PV Over current	PV over current	fault		after a manual reset	DC overcurrent	77
PV Reverse	PV input reverse connection	fault			Reverse polarity	77
PVVoltOver		fault			DC overvoltage	77
TempOver	over-temperature protection	fault	stops	by itself	Inverter overtemperature	76
Fault0020	bus over volt hardware	fault		after a manual reset	DC bus overvoltage	77
Fault0060	CPLD fault	fault		after a manual reset	Internal device fault	77
Fault0080	bus hardware over current fault	fault		after a manual reset	Internal overcurrent or overvoltage	77
Fault0090	dynamic leakage current high	fault			High leakage current	78
Fault0100	grid relay fault	fault		after a manual reset		77
Fault0110	bus imbalance	fault			Neutral point voltage imbalance	78
Fault0130	bus over total voltage	fault		after a manual reset	DC bus overvoltage	77
Fault0150	open-loop self-check failure	fault		after a manual reset	Self-test failure	77
Protect0020	grid relay error	fault	stops	after a manual reset		75
Protect0030	inverter over current	fault	stops	after a manual reset	Inverter overcurrent	75
Protect0070	bus imbalance	fault			Neutral point voltage imbalance	76
Protect0090	bus over voltage	fault	stops	after a manual reset	DC bus overvoltage	75
Protect0100	sensor fault of leakage current	fault	stops	after a manual reset		75
Protect0110	bus over voltage (FW)	fault	stops	after a manual reset	DC bus overvoltage	75
Protect0150	mini MCU fault	fault	stops	after a manual reset	Internal device fault	75
Protect0170	DCI high	fault			High DC injection	76
Protect0180	sampling offset of DCI	fault	stops		Current sensor offset	76
Protect0230	inverter open-loop self-test fault	fault		after a manual reset	Self-test failure	76
Warn0030	EepromErr	warning		by itself	Data storage failure	75
Warn0040	DC SPD fault	warning			Surge protector alarm	75
Warn0050	TempSensorErr	warning		after a manual reset		75
Warn0100	AC SPD fault	warning	unaffected		Surge protector alarm	75

CPS SCH125KTL-AIO/US-600

Code	Shown as	Class	Production	Clears	Reports	Page
CommErr		warning		by itself	Internal communication failure	86
ExtFanErr		warning		by itself	Fan fault alarm	86
GFCIErr	leakage current high	fault	stops		High leakage current	89
GridF.OutLim		fault	stops	after a manual reset	Grid frequency out of range	88
GridV.OutLim		fault	stops	after a manual reset	Grid voltage out of range	88
IsolationErr	Insulation resistance low	fault			Low insulation resistance	89
PV Over current	PV Over current	fault		after a manual reset	DC overcurrent	90
PV Reverse	PV input reverse connection	fault			Reverse polarity	90
PVVoltOver		fault			DC overvoltage	90
TempOver	Over-temperature protection	fault	stops	by itself	Inverter overtemperature	88
Fault0020	Bus over volt Hardware	fault		after a manual reset	DC bus overvoltage	92
Fault0060	CPLD Fault	fault		after a manual reset	Internal device fault	92
Fault0080	Bus Hardware over current fault	fault		after a manual reset	Internal overcurrent or overvoltage	91
Fault0090	Dynamic leakage current high	fault			High leakage current	91
Fault0100	Grid relay fault	fault		after a manual reset		91
Fault0110	Bus imbalance	fault			Neutral point voltage imbalance	91
Fault0130	Bus over total voltage	fault		after a manual reset	DC bus overvoltage	91
Fault0150	Open-loop self-check failure	fault		after a manual reset	Self-test failure	92
Protect0020	Grid relay error	fault	stops	after a manual reset		88
Protect0030	Inverter Over Current	fault	stops	after a manual reset	Inverter overcurrent	88
Protect0070	Bus imbalance	fault			Neutral point voltage imbalance	88
Protect0090	Bus over voltage	fault	stops	after a manual reset	DC bus overvoltage	88
Protect0100	The sensor fault of leakage current	fault	stops	after a manual reset		90
Protect0110	BUS over voltage (firmware)	fault	stops	after a manual reset	DC bus overvoltage	89
Protect0150	Mini MCU Fault	fault	stops	after a manual reset	Internal device fault	89
Protect0170	DCI high	fault			High DC injection	89
Protect0180		fault	stops		Current sensor offset	88
Protect0230	Inverter open-loop self-test fault	fault		after a manual reset	Self-test failure	90
Warn0030	EepromErr	warning		by itself	Data storage failure	87
Warn0040	DC SPD fault	warning			Surge protector alarm	87
Warn0050	TempSensorErr	warning		after a manual reset		87
Warn0100	AC SPD fault	warning	unaffected		Surge protector alarm	87

CPS SCH200K-T-US-480 / SCH250K-T-US-600

Code	Shown as	Class	Production	Clears	Reports	Page
Arcboard Err	Arc board error			after a manual reset		106
CommErr	Communication inside inverter failed			by itself	Internal communication failure	105
ExtFanErr	Cooling fan failure			by itself	Fan fault alarm	105
GFCIErr	Leakage current high		stops		High leakage current	105
GridF.OutLim			stops	after a manual reset	Grid frequency out of range	106
GridV.OutLim			stops	after a manual reset	Grid voltage out of range	106
IntFanErr	Cooling fan failure			by itself	Fan fault alarm	105
IsolationErr	Insulation resistance low				Low insulation resistance	105
TempOver	Over-temperature protection		stops	by itself	Inverter overtemperature	106
Fault0030	Bus over voltage hardware	fault	stops	after a manual reset	DC bus overvoltage	107
Fault0130	Grid relay fault	fault		after a manual reset	DC bus overvoltage	107
Fault0300	Bus hardware overcurrent fault	fault	stops	after a manual reset	Internal overcurrent or overvoltage	107
Fault0390	Open loop self-check failure	fault	stops	after a manual reset	Self-test failure	107
Fault0650	Static leakage current high	fault			High leakage current	107
Fault0740	CPLD fault	fault	stops	after a manual reset	Internal device fault	107
Protect0000	Bus over voltage	fault		after a manual reset	DC bus overvoltage	105
Protect0130	Grid relay error	fault		by itself		105
Protect0170	DCI sampling offset	fault			High DC injection	106
Protect0180	DCI high	fault	stops		Current sensor offset	106
Protect0230	Mini MCU fault	fault		after a manual reset	Self-test failure	105
Protect0240	Inverter over current	fault		by itself	Inverter overcurrent	105
Protect0300	Bus over voltage firmware	fault		by itself	DC bus overvoltage	105
Protect0390	Leakage current sensor fault	fault		after a manual reset	Self-test failure	105
Protect0630	ARC Fault	fault		after a manual reset		106
Warn0030	EepromErr	warning		by itself	Data storage failure	105
Warn0050	TempSensorErr	warning		after a manual reset		105

CPS SCH275KTL-DO/US-800

Code	Shown as	Class	Production	Clears	Reports	Page
CommErr		warning		by itself	Internal communication failure	70
ExtFanErr		warning		by itself	Fan fault alarm	70
GFCIErr	leakage current high	fault	stops		High leakage current	72
GridF.OutLim		fault	stops	after a manual reset	Grid frequency out of range	72
GridV.OutLim		fault	stops	after a manual reset	Grid voltage out of range	72
IntFanErr		warning		by itself	Fan fault alarm	70
IsolationErr	insulation resistance low	fault			Low insulation resistance	72
PVVoltOver		fault			DC overvoltage	73
TempOver	over-temperature protection	fault	stops	by itself	Inverter overtemperature	72
Fault0020	bus over volt hardware	fault		after a manual reset	DC bus overvoltage	73
Fault0060	CPLD fault	fault		after a manual reset	Internal device fault	73
Fault0090	high static leakage current	fault			High leakage current	73
Fault0100	grid relay fault	fault		after a manual reset		73
Fault0110	bus imbalance	fault			Neutral point voltage imbalance	73
Fault0130	bus over total voltage	fault		after a manual reset	DC bus overvoltage	73
Fault0150	open-loop self-check failure	fault		after a manual reset	Self-test failure	73
Protect0020	grid relay error	fault	stops	after a manual reset		71
Protect0030	inverter over current	fault	stops	after a manual reset	Inverter overcurrent	71
Protect0070	bus imbalance	fault			Neutral point voltage imbalance	71
Protect0090	bus over voltage	fault	stops	after a manual reset	DC bus overvoltage	71
Protect0100	sensor fault of leakage current	fault	stops	after a manual reset		71
Protect0110	bus over voltage (FW)	fault	stops	after a manual reset	DC bus overvoltage	71
Protect0150	mini MCU fault	fault	stops	after a manual reset	Internal device fault	71
Protect0170	DCI high	fault			High DC injection	71
Protect0180	sampling offset of DCI	fault	stops		Current sensor offset	72
Protect0230	inverter open-loop self-test fault	fault		after a manual reset	Self-test failure	71
Warn0030	EepromErr	warning		by itself	Data storage failure	71
Warn0040	DC SPD fault	warning			Surge protector alarm	71
Warn0050	TempSensorErr	warning		after a manual reset		71
Warn0100	AC SPD fault	warning	unaffected		Surge protector alarm	71

CPS SCH350KTL-DO/US-800

Code	Shown as	Class	Production	Clears	Reports	Page
CfLowErr	voltage across flying capacitor too low	warning		after a manual reset	Flying capacitor undervoltage	94
CommErr	communication error			by itself	Internal communication failure	94
ExtFanErr	cooling fan failure			by itself	Fan fault alarm	94
GFCIErr	high leakage current		stops		High leakage current	96
GridF.OutLim			stops	after a manual reset	Grid frequency out of range	95
GridV.OutLim			stops	after a manual reset	Grid voltage out of range	95
High CFx voltage	x=1, 2…30	fault	stops	after a manual reset		95
IntFanErr	cooling fan failure			by itself	Fan fault alarm	94
IsolationErr	low insulation resistance				Low insulation resistance	96
PVVoltOver					DC overvoltage	96
Reverse PVx electrode	x=1, 2…30				Reverse polarity	96
TempOver	over temperature protection		stops	by itself	Inverter overtemperature	96
Fault0020	bus over voltage hardware	fault		after a manual reset	DC bus overvoltage	97
Fault0060	CPLD fault	fault		after a manual reset	Internal device fault	97
Fault0090	high static leakage current	fault			High leakage current	97
Fault0100	grid relay fault	fault		after a manual reset		97
Fault0110	bus imbalance	fault			Neutral point voltage imbalance	97
Fault0130	bus over total voltage	fault		after a manual reset	DC bus overvoltage	97
Fault0150	open-loop self-check failure	fault		after a manual reset	Self-test failure	97
Protect0020	grid relay error	fault	stops	after a manual reset		95
Protect0030	inverter over current	fault	stops	after a manual reset	Inverter overcurrent	95
Protect0070	bus imbalance	fault			Neutral point voltage imbalance	95
Protect0090	bus over voltage	fault	stops	after a manual reset	DC bus overvoltage	95
Protect0100	leakage current sensor fault	fault	stops	after a manual reset		95
Protect0110	bus over voltage (firmware)	fault	stops	after a manual reset	DC bus overvoltage	95
Protect0150	mini MCU fault	fault	stops	after a manual reset	Internal device fault	95
Protect0170	high DCI	fault			High DC injection	95
Protect0180	DCI sampling offset	fault	stops		Current sensor offset	96
Protect0230	inverter open-loop self-test fault	fault		after a manual reset	Self-test failure	95
Warn0030	Eeprom error	warning		by itself	Data storage failure	94
Warn0040	DC SPD fault	warning			Surge protector alarm	94
Warn0050	TempSensorErr	warning		after a manual reset		94
Warn0080	external heat exchanger fan error	warning		by itself	Fan fault alarm	94
Warn0100	AC SPD fault	warning	unaffected		Surge protector alarm	94

Codes are sorted by vendor prefix and number. Each row links to the code's record; concepts link to their reading rule.