Complete list of Alarm/Display Messages

Message:          

Description:     

Solution:

Generating

Generating 

No need to deal with, the inverter is in normal operation

Grid Off

Control inverter to turn off - 

Set the inverter to Gird ON

Set the inverter to Gird ON

LimByEPM

Inverter is under external control 

1. Confirm whether the inverter is connected to an EPM/meter to do export control. 2. Confirm whether the inverter is controlled by an external third-party device. 3. Confirm whether the power setting of the inverter Power Control is limited

LimByVg

Inverter is under Volt-Watt working mode

1. Subject to local safety regulations, when the grid voltage is high, the Voltwatt working mode is triggered, which generally does not need to be dealt with; 2. The factory mistake may causes the mode to turn on. If you need to turn it off, you can turn it off in the LCD. Setting process: main menu→advanced setting→password 0010→STD mode setting→working mode →working mode: NULL→save and exit.

LimByVar

Inverter is under Volt-Var working mode

1. Subject to local safety regulations, when the grid voltage is high, the Voltvar working mode is triggered, which generally does not need to be dealt with; 2. The factory mistake may causes the mode to turn on. If you need to turn it off, you can turn it off in the LCD. Setting process: main menu→advanced setting→password 0010→STD mode setting→working mode →working mode: NULL→save and exit.

LimByPlmt

Inverter is under P Factor working mode

If you need to turn this mode off, you can turn it off in the LCD. Setting process: main menu→advanced setting→password 0010→STD mode setting→working mode →working mode: NULL→save and exit.

OpenRun

Open loop operation - 

No need to deal with, the inverter is in open loop operation state, only appear in the internal test environment.

No need to deal with, the inverter is in open loop operation state, only appear in the internal test environment.

SoftRun

Wait to start generating - 

Try to restart the inverter, if it is still not resolved, please contact the manufacturer's customer service.

Try to restart the inverter, if it is still not resolved, please contact the manufacturer's customer service.

Waiting

Wait to operate - 

Test whether the DC input voltage of the inverter reaches the minimum starting voltage.

Test whether the DC input voltage of the inverter reaches the minimum starting voltage.

Message:          

Description:     

Solution:

DcSpdFail

DC SPD fault 

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

Fan Alarm

Internal Fan fault

Check whether the internal fan of the inverter is abnormal and does not start; try to restart the inverter. 

Fan_H Alarm

External Fan fault 

Check whether the external fan is abnormal and does not start; try to restart the inverter; refer to the manual to replace the external fan/clean the fan. 

FuseFail

Fuse alarm on 125K-EHV-5G and Korean 100K with fuse model

Restart the inverter and replace the fuse referring to the manual. If it is still not eliminated, please contact the manufacturer's customer service.

Surge Alarm

Gird has surge

Grid has surge. It is for after-sale information analysis, doesn't affect inverter operation. 

VgSpdFail

AC SPD fault 

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

Message:          

Alarm Code:

Description:     

Solution:

OV-G-V 01

1010

Grid voltage is higher than standard code's 1st level overvoltage limit for the set peirod of time.

1. If it happens accidentally, it may be a short-term abnormality of the grid. The inverter will resume normal operation after detecting that the grid is normal, without manual intervention.

2. Check if the standard is set correctly. 

3. If it occurs frequently, please check the grid voltage and the grid frequency if it is within the standard protection range of the inverter.     If not, please check whether the AC side circuit breaker and the output cable are connected properly.

  4. If the grid voltage and grid frequency are not within the standard protection range of the inverter, and the AC side wiring is confirmed to be correct, this alarm still appears frequently. After obtaining the approval from the local power operator, please contact customer service to modify the inverter grid Over and under voltage/frequency protection points.

OV-G-V 02

Grid voltage transient value is over 1.35 times of rated voltage peak value.

OV-G-V 03

Grid voltage is higher than the 10min overvoltage limit in the standard code.

OV-G-V 04

Grid voltage is higher than standard code's 2nd level overvoltage limit for the set peirod of time.

OV-G-V 05

Grid voltage transient value is over 1.35 times of rated voltage peak value　over 200ms.

UN-G-V

1011

Grid voltage is lower than the limit.

OV-G-F

1012

Grid frequency is higher the limit.

UN-G-F

1013

Grid frequency is lower the limit.

Backfeed_Iac

1014

AC backfeed current

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

NO-Grid

1015

No grid

1. Confirm whether the power grid is properly connected.
 2. Confirm whether the connected power grid is normal.

3. Check if the Grid Standard is set correctly.
 3. If the grid connection is normal, you need to contact manufacturer's customer service with information of AV Voltage details and where voltage was measured.

G-PHASE

1016

Grid has unbalanced 3phase

1. Confirm whether the power grid is properly connected.
2. Confirm whether the connected power grid is normal.
 3. If the grid connection is normal, you need to contact manufacturer's customer service.

G-F-FLU

1017

Grid frequency is abnormal

1. Confirm whether the power grid is properly connected.
2. Confirm whether the connected power grid is normal.
 3. If the grid connection is normal, you need to contact manufacturer's customer service.

OV-G-I

1018

Grid output overcurrent 

1. Confirm whether the power grid is properly connected.
2. Confirm whether the connected power grid is normal.
 3. If the grid connection is normal, you need to contact manufacturer's customer service.

IGFOL-F

1019

Grid current tracking error

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

PHASE-FAULT

101A

Abnormal grid phase angle 

1. Check whether the AC side wiring is correct. 2. Check whether the grid phase angle is 120°. 3. Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

OV-DC

1020

DC overvoltae

1. Check whether the input voltage exceeds the maximum input voltage of the inverter;
2. Restart the inverter
 3. If it is still not ruled out, please contact the manufacturer's customer service.

BoostFal

1020

DC boost circuit fault

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

OV-BUS

1021

DC bus overvoltage

1. Check whether the input voltage exceeds the maximum input voltage of the inverter;
2. Restart the inverter
 3. If it is still not ruled out, please contact the manufacturer's customer service.

UNB-BUS

1022

DC bus voltage and DC bus half voltage is not correct

1. Check whether the inverter bus voltage and bus half voltage are correct,
2. Restart the inverter
 3. If it is still not ruled out, please contact the manufacturer's customer service.

UN-BUS02

1023

Abnormal display of DC bus voltage

UN-BUS

1023

DC bus voltage is too low

1. Check whether the input voltage is too low 2. Restart the inverter 3. If it is still not ruled out, please contact the manufacturer's after sales engineer.

DC-INTF.

1027

Abnormal DC input current 

1. Check whether the DC wiring is falsely connected or damaged.
2. Restart the inverter.
 3. If it is still not resolved, please contact the manufacturer's customer service.

Reve-DC

1028

DC reversely connected.

1. Check whether the DC wiring is reversed. 

2. Check whether the wire has correct size. 

3. Check if correct Grid Standard is set.
4. Restart the inverter
 5. If it is still not resolved, please contact the manufacturer's customer service.

PvMidIso

1029

PV middle point low insulation protection

1. Check the time when the error is reported. If the error is reported in the early morning or late afternoon or on a rainy day, it is a normal phenomenon. The moisture in the air increases, the impedance becomes low, and it is easy to report the ISO;
2. Use the resistance level of the multimeter to measure the resistance of the PV string to the ground , and the resistance should be above 20kΩ; if the impedance is too low, please check the insulation between the PV string and the ground, or make a new cable between panel and the inverter
3. Use a multimeter to measure the resistance of the N wire and the ground wire. This value should be close to zero. Otherwise, there is a problem with the connection between the AC N wire and the ground wire. Please check the AC wiring;
4. Please check whether the software version is the latest. You can try to update the software (due to the continuous changes in regulations, the ISO detection threshold is also changed along with version upgrade)
 5. If the above is normal, please contact after-sales service.

PVGndRun

1029

The PV terminal of the inverter is grounded during operation.

1. Check that the PV string connected to the inverter is grounded, and use a multimeter to check the DC gear.

Vbus-Sam

102A

DC bus voltage and DC bus half voltage is not correct.

1. Check whether the inverter bus voltage and bus half are correct
2. Restart the inverter
 3. If it is still not ruled out, please contact the manufacturer's customer service.

GRID-INTF.

1030

Grid interference

1. Multiple inverters installed in line and the grid voltage wave is non-ideal.
2. Grid filters need to be set. Changing the grid filter in the "Special Setting" may solve the problem.
3. Downstream equipment needs to be changed or repaired.
 

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

INI-FAULT

1031

DSP initializing fault.

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

OV-TEM

1032

The internal temperature near IGBTs is beyond the limitation. 

Typically

90°C for 1P inverters

115°C for 3P inverters

1: Check whether the installation location of the inverter meets the requirements of the user manual. (Installation in direct sunlight? Inverter mounted incorrectly (angle)? Faulty temperature probe? Loose connection of temperature probe?) 

2: Try to lower the ambient temperature

3: Turn off the inverter and restart it after 15 minutes

4: If the error still exists, please contact the manufacturer's customer service. 

PV ISO-PRO 01

1033

Low PV insulation protection

1. Check the time when the error is reported. If the error is reported in the early morning or late afternoon or on a rainy day, it is a normal phenomenon. The moisture in the air increases, the impedance becomes low, and it is easy to report the ISO;

2. Use the resistance level of the multimeter to measure the resistance of the PV string to the ground , and the resistance should be above 20kΩ; if the impedance is too low, please check the insulation between the PV string and the ground, or make a new cable between panel and the inverter

3. Use a multimeter to measure the resistance of the N wire and the ground wire. This value should be close to zero. Otherwise, there is a problem with the connection between the AC N wire and the ground wire. Please check the AC wiring;

4. Please check whether the software version is the latest. You can try to update the software (due to the continuous changes in regulations, the ISO detection threshold is also changed along with version upgrade)

5. If the above is normal, please contact after-sales service.

PV ISO-PRO 02

1033

Low PV insulation protection

ILeak-PRO 01

1034

Leakage current protection

1. Connect each string of components individually in turn to determine whether it is caused by a single string problem. If there is no error when inserting one of the string, it can be determined that it is caused by the string problem. Check whether the problematic string has broken insulation or other problems.

A: Damaged PV wire insulation.

B: PV wire is incorrect gauge.

C: Faulty transformer downstream.

D: Incorrect wiring of RSD.

E: Buried AC wires are saturated with Wire

F: AC Wire is low quality

2. If this error occurs only on a rainy day or in the morning, the leakage current is too large due to the aging of the module. The error will be automatically cleared when it is sunny or when the air humidity decreases.

3. This issue may be solved by remotely upgrading the software. Please contact our customer support team.

ILeak-PRO 02

ILeak-PRO 03

ILeak-PRO 04

RelayChk-FAIL 

1035

Relay selfcheck protection

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

DSP-B-Sam-Fau

1036

Missing or error from DSP software

1. Check whether the inverter's DSP software version number exists, and try to restart the inverter. If it is still not ruled out, please contact the manufacturer's customer service.

DSP-B-FAULT

1036

fault between master DSP and slave dsp

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

DSP-B-Com-Fau

1036

DSP software is missing

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

DCInj-FAULT

1037

DC injection component too large.

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

12Power-FAULT

1038

12V power supply fault

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

ILeak-Check

1039

RCMU Selfcheck protection

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

UN-TEM

103A

Low temperature

Check whether the ambient temperature is too low and restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

AFCI-Check

1040

AFCI selfcheck protection

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

ARC- FAULT

1041

Detected DC arc in the DC circuit

Check if there is an arc in the inverter DC connection. 

1. Are the MC4 Heads loose? 

2. Are the MC4 heads broken? 

3. Check Connection in inverter terminal or fuse block. 

4. Check if connection in J-Box is bad/loose. 

5. Are any PV panels cracked/damaged? 

6. Check Firmware. 

7. Check sensitivity level. 

8. Try restarting the inverter.

If it is still not resolved, please contact the manufacturer's customer service.

IG-AD

1047

Grid current sampling error.

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

IGBT-OV-I

1048

IGBT overcurrent

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

Failsafe

2010

EPM communication fail

Check the communication connection between the inverter and EPM/meter.

L&PE FAULT

F017

The three phases on the AC side are connected to the ground.

Restart the inverter, if it is still not resolved, please contact the manufacturer's customer service; check the AC side wiring; check whether there is a ground fault on the AC side.

DSP-SelfCheck

1058

DSP firmware does not match the hardware

1. Check whether the software version burned by the inverter is correct, and whether the software model number is consistent with the model number.

Vg-Sample

1059

The grid voltage sampling value is deviated

1. Check whether there is an error between the AC voltage displayed by the inverter and the AC voltage detected by the multimeter. If there is an error, try to restart the inverter. If it is still not eliminated, please contact the manufacturer.

Message:          

Description:     

Solution:

Off

Control inverter to turn off - 

Set the inverter to Gird ON

Set the inverter to Gird ON

GridToLoad

The loads are support by Grid directly

No need to deal with it.

LmtByDRM

DRM Function is Enabled

No need to deal with it.

LimByEPM

Inverter is under external control

1. Confirm whether the inverter is connected to an EPM/meter to do export control. 

2. Confirm whether the inverter is controlled by an external third-party device. 

3. Confirm whether the power setting of the inverter Power Control is limited

LmtByFreq

The output power is limited by frequency

The output power is limited by frequency

LimByVg

Inverter is under Volt-Watt working mode

1. Subject to local safety regulations, when the grid voltage is high, the Voltwatt working mode is triggered, which generally does not need to be dealt with; 

2. The factory mistake may causes the mode to turn on. If you need to turn it off, you can turn it off in the LCD. Setting process: main menu→advanced setting→password 0010→STD mode setting→working mode →working mode: NULL→save and exit.

LmtByTemp

The output power is limited by temperature

No need to deal with, the inverter is in normal operation

LimByVar

Inverter is under Volt-Var working mode 

1. Subject to local safety regulations, when the grid voltage is high, the Voltvar working mode is triggered, which generally does not need to be dealt with;
2. The factory mistake may causes the mode to turn on. If you need to turn it off, you can turn it off in the LCD.
 Setting process: main menu→advanced setting→password 0010→STD mode setting→working mode →working mode: NULL→save and exit.

LmtByVg

Inverter is under Volt-Watt working mode

1. Subject to local safety regulations, when the grid voltage is high, the Voltwatt working mode is triggered, which generally does not need to be dealt with;
2. The factory mistake may causes the mode to turn on. If you need to turn it off, you can turn it off in the LCD.
 Setting process: main menu→advanced setting→password 0010→STD mode setting→working mode →working mode: NULL→save and exit.

LmtByUnFr

The output power is limited by the low frequency.

No need to deal with it.

Normal

Normal Operation

OpenRun

Open loop operation 

No need to deal with, the inverter is in open loop operation state, only appear in the internal test environment.

SoftRun

Wait to start generating 

Try to restart the inverter, if it is still not resolved, please contact the manufacturer's customer service.

Standby

Inverter is operating in Off-Grid Mode.

No need to deal with, the inverter is in normal operation.

StandbySynoch

The inverter operation status is turned to Grid-tied from Off-Grid mode.

No need to deal with it.

Waiting

Wait to operate. 

Test whether the DC input voltage of the inverter reaches the minimum starting voltage.

Message:          

Description:     

Solution:

Fan Alarm

Internal Fan fault

1.Check whether the internal fan of the inverter is abnormal and does not start; 

2. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

Over-Load

Overload Fault

1.The Backup load power is too large or some inductive loads have     large temporary start-up power.
 2.Please trun off some backup loads or the inductive backup loads.

Surge Alarm

Gird has surge

Grid has surge. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

Message:          

Alarm Code:     

Description:     

Solution:

OV-G-V 01

1010

Grid voltage is higher than standard code's 1st level overvoltage limit for the set peirod of time. 

1. Confirm whether the connected power grid is normal.

2. Confirm whether AC cables of power grid are properly connected.

3. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

OV-G-V 02

Grid voltage transient value is over 1.35 times of rated voltage peak value.

OV-G-V 03

Grid voltage is higher than the 10min overvoltage limit in the standard code.

OV-G-V 04

Grid voltage is higher than standard code's 2nd level overvoltage limit for the set period of time.

OV-G-V 05

The RMS value of Grid voltage is higher than the setting value. 

UN-G-V01

1011

Grid voltage is lower than standard code's 1st level overvoltage limit for the set peirod of time.

UN-G-V02

Grid voltage transient value is under 0.85 times of rated voltage peak value.

OV-G-F01

1012

Grid frequency is higher than standard code's 1st level over-frequency limit for the set period of time.

OV-G-F02

Grid frequency is higher than standard code's 2nd  level over-frequency limit for the set period of time. 

UN-G-F01

1013

Grid frequency is lower than standard code's 1st level over-frequency limit for the set period of time.

UN-G-F02

Grid frequency is lower than standard code's 2nd level over-frequency limit for the set period of time.

NO-Grid

1015

No grid

1. Confirm whether the power grid is properly connected.
 2. Confirm whether the connected power grid is normal.

3. Check if the Grid Standard is set correctly.
 3. If the grid connection is normal, you need to contact manufacturer's customer service with information of AV Voltage details and where voltage was measured.

G-PHASE

1016

Grid has unbalanced 3phase

1. Confirm whether the connected power grid is normal.

2. Confirm whether AC cables of power grid are properly connected.

3. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

G-F-FLU

1017

Grid frequency is abnormal

1. Confirm whether the connected power grid is normal.

2. Confirm whether AC cables of power grid are properly connected.

3. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

OV-G-I

1018

Phase A current RMS overcurrent

1. Confirm whether the connected power grid is normal.

2. Confirm whether AC cables of power grid are properly connected.

3. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

IGFOL-F

1019

Grid current tracking error

1. Confirm whether the connected power grid is normal.
2. Confirm whether AC cables of power grid are properly connected.
 3. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

OV-DC01

1020

DC1 overvoltage

1. Confirm whether the PV voltage is abnormal. (maybe too many modules in series?)

2. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

OV-DC02

1020

DC2 overvoltage

1. Confirm whether the PV voltage is abnormal. (maybe too many modules in series?)

2. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

OV-BUS

1021

DC bus overvoltage

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

UNB-BUS

1022

DC bus voltage and DC bus half voltage is not correct.

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

UN-BUS01

DC bus undervoltage

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

UN-BUS02

1023

Abnormal display of DC bus voltage

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

OV-DCA-I

1025

DC1 current average overcurrent

1. Check the string for faults. (polarity)

2. Try to remove the faulty string from the MPPT. Otherwise, it might be some internal fault.

3. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

OV-DCB-I

1026

DC2 current average overcurrent

1. Check the string for faults. (polarity)

2. Try to remove the faulty string from the MPPT. Otherwise, it might be some internal fault.

3. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

DC-INTF.

1027

Abnormal DC input current 

1. Check whether the DC wiring is falsely connected or damaged.
2. Restart the inverter.
 3. If it is still not resolved, please contact the manufacturer's customer service.

GRID-INTF.

1030

Grid interference

1. Multiple inverters installed in line and the grid voltage wave is non-ideal.
2. Grid filters need to be set. Changing the grid filter in the "Special Setting" may solve the problem.
3. Downstream equipment needs to be changed or repaired.
 

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

GRID-INTF02

Grid interference 02

1. Check whether the Grid is severly distored.
 2. Check whether the AC cables has realliable connection.

INI-FAULT

1031

AD zero-drift overlimit

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

OV-TEM

1032

The internal temperature near IGBTs is beyond the limitation. 

Typically

90°C for 1P inverters

115°C for 3P inverters

1: Check whether the installation location of the inverter meets the requirements of the user manual. (Installation in direct sunlight? Inverter mounted incorrectly (angle)? Faulty temperature probe? Loose connection of temperature probe?) 

2: Try to lower the ambient temperature

3: Turn off the inverter and restart it after 15 minutes

4: If the error still exists, please contact the manufacturer's customer service. 

PV ISO-PRO 01

1033

PV Negetive to ground fault

1. Check the time when the error is reported. If the error is reported in the early morning or late afternoon or on a rainy day, it is a normal phenomenon. The moisture in the air increases, the impedance becomes low, and it is easy to report the ISO;

2. Use the resistance level of the multimeter to measure the resistance of the PV string to the ground , and the resistance should be above 20kΩ; if the impedance is too low, please check the insulation between the PV string and the ground, or make a new cable between panel and the inverter

3. Use a multimeter to measure the resistance of the N wire and the ground wire. This value should be close to zero. Otherwise, there is a problem with the connection between the AC N wire and the ground wire. Please check the AC wiring;

4. Please check whether the software version is the latest. You can try to update the software (due to the continuous changes in regulations, the ISO detection threshold is also changed along with version upgrade)

5. If the above is normal, please contact after-sales service.

PV ISO-PRO 02

1033

PV Positive to ground fault

ILeak-PRO 01

1034

Leakage current protection 01(30mA)

1. Connect each string of components individually in turn to determine whether it is caused by a single string problem. If there is no error when inserting one of the string, it can be determined that it is caused by the string problem. Check whether the problematic string has broken insulation or other problems.

A: Damaged PV wire insulation.

B: PV wire is incorrect gauge.

C: Faulty transformer downstream.

D: Incorrect wiring of RSD.

E: Buried AC wires are saturated with Wire

F: AC Wire is low quality

2. If this error occurs only on a rainy day or in the morning, the leakage current is too large due to the aging of the module. The error will be automatically cleared when it is sunny or when the air humidity decreases.

3. This issue may be solved by remotely upgrading the software. Please contact our customer support team.

ILeak-PRO 02

1034

Leakage current protection 02(60mA)

ILeak-PRO 03

1034

Leakage current protection 03(150mA)

ILeak-PRO 04

1034

Leakage current protection 04(300mA)

RelayChk-FAIL 

1035

Relay Fault

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

DSP-B-FAULT

1036

Abnormal communication between Master and Slave DSP

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

DCInj-FAULT

1037

DC components of AC current exceeds limitation.

1. Confirm whether the connected power grid is normal.

2. Confirm whether AC cables of power grid are properly connected.

3. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

12Power-FAULT

1038

12V power supply fault

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

UN-TEM

103A

Low temperature

Check whether the ambient temperature is too low and restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

ILeak_Check

1039

Leakage current sensor Failure

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

AFCI-Check

1040

AFCI selfcheck protection

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

ARC- FAULT

1041

Detected DC arc in the DC circuit

Check if there is an arc in the inverter DC connection. 

1. Are the MC4 Heads loose? 

2. Are the MC4 heads broken? 

3. Check Connection in inverter terminal or fuse block. 

4. Check if connection in J-Box is bad/loose. 

5. Are any PV panels cracked/damaged? 

6. Check Firmware. 

7. Check sensitivity level. 

8. Try restarting the inverter.

If it is still not resolved, please contact the manufacturer's customer service.

IG-AD

1047

Grid current sampling error.

1. Check whether the Grid is severly distored.
 2. Check whether the AC cables has realliable connection.

IGBT-OV-I

1048

IGBT overcurrent

Restart the inverter. If it is still not resolved, please contact the manufacturer's customer service.

OV-IgTr

1050

Grid current temporarily overcurrent

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

OV-Vbatt-H/OV-BUS-H

1051

Battery hardware overvoltage/Vbus

1. Check whether the battery circuit breaker has triggered.
 2. Check whether the battery was damaged.

OV-ILLC

1052

LLC hardware overcurrent

1. Check whether Backup load is overloaded.
 2. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

OV-Vbatt

1053

Battery overvoltage

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

UN-Vbatt

1054

Battery undervoltage

1. Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

NO-Battery

1055

Battery is not connected

1. Check whether the battery has been well connected.
 2. Check whether the circuit breaker or fuse have been triggered.

OV-Vbackup

1056

The backup voltage exceeds the setting value

1. Check whether the Backup terminal wiring is normal.
 2. Restart the whole system, if it is still not ruled out, please contact the manufacturer's customer service.

Over-Load

1057

The backup load is overloaded

1. Check whether the backup load is overloaded.
 2. Restart the whole system, if it is still not ruled out, please contact the manufacturer's customer service.

DspSelfChk

1058

Abnormal Self-detection of DSP

1. Restart system and comfirm whether the fault still exists.

WORD5_B13

105A

Mismatch Between DSP Software and Firmware

1. Confirm whetehr the 4th/5th number of SN is consistent with Model in LCD.

Failsafe

2010

EPM communication cables aren't connected.

1.Check the communication connection between inverter and Meter, confirm whether the internal EPM function has been enabled.
 2.Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

MET_Comm_FAIL

2011

Meter communication cables aren't connected

1.Check Meter communication cables.
2.Confirm whether the Meter brand has been selected correctly in the inverter LCD.
 3.Restart the inverter, if it is still not ruled out, please contact the manufacturer's customer service.

CAN_Comm_FAIL

2012

Battery Communication Failure

1. Check whether the communication cable of meter is damaged.

DSP_Comm_FAIL

2014

DSP Communication Failure

1. Restart DSP to ensure whether the fault is existing.

Alarm1-BMS

2015

Battery BMS Alarm

1. Restart the Battery to ensure whether the fault is existing.

BatName-FAIL

2016

Wrong selection of battery brand

1. Please confirm whether the selected battery brand is the same as actual battery.

Alarm2-BMS

2017

Battery BMS Alarm 2

1. Restart the Battery to ensure whether the fault is existing.

DRM_LINK_FAIL

2018

DRM Connection Failure

Confirm whether DRM cable connection is realiable.

LG-BMS-Fault

2019

LG Battery BMS Fault

Restart the battery and contact battery manufacture for handling if the fault still exists.

LG-Comm-FAIL

2021

LG Battery Communication Failure

1. Restart the battery and contact battery manufacture for handling if the fault still exists.

Message:          

Description:     

Solution:          

Normal

Normal operation

1. No need to deal with it, EPM is in normal operation.

Message:          

Description:     

Solution:          

CT-Failsafe

CT lost the connection with EPM

1. Check the CT cables of EPM, the sencondary side of CT is not allowed to be disconnected before the primary side of CT has been disconnected.

M-ComFailSafe

Abnormal Meter communication

1. Restart the EPM, if it is still not ruled out, please contact the manufacturer's customer service.

M-VFailSafe

Abnormal Meter voltage

1. Restart the EPM, if it is still not ruled out, please contact the manufacturer's customer service.

RS485AllFail

EPM lost the RS485 connection with all inverters in the whole system.

1. Check all communication connection between EPM and inverters.

RS485 Fail

EPM lost the RS485 connection with one or more inverters.

1. Check the communication cables between EPM and inverters.