Troubleshooting
You can install Autarco’s Hybrid & PV inverters on the same phase.
The following works:
- Energy harnessing works (excess solar will be absorbed by the battery instead of exported to the grid)
- PV inverter monitoring works as usual
- Hybrid inverter monitoring works: grid import; grid export; generation (of hybrid); charge; discharge; temperatures; faults etc… (except for house consumption(see below))
- Export limiting of the hybrid inverter (if you have an export limit requirement of 5KW; you have a 5kW PV inverter; you can set the hybrid inverter export limit to 5kW and it will stop generating when it sees 5kW being exported)
The following doesn’t work:
- The value of house power is calculated by knowing the meter power and the inverter output power, however, the other device makes this value incorrect. Therefore house consumption power (and energy) doesn’t work
- Export limiting of the PV inverter
If the battery is not connected or the voltage of the battery is too low, the system will display NoBattery.
- Check the battery connections and verify if they are properly clicked into the connector. Measure the voltage of the battery. Typical values are from 45 to 52 Volt per unit.
- If the battery is connected properly, check MyAutarco if there have been previous warnings on the battery state (e.g. Bat Undervoltage, ……) If yes, the BMS may have stopped itself to prevent damage. Isolate each battery from the other batteries in the same stack and start up the battery. Measure the voltage on each. If the voltage is higher than ~35 Volt, the BMS shall be able to recover the battery by applying a forced charge. If the battery voltage is lower, contact the battery supplier for the correct recovery procedure.
Battery setting not correct
Enter Advanced Settings at the LCD of the inverter or through Helios.
Enter Battery Select submenu > Select the correct Battery
Enter Battery WakeUp
Physical connection interrupted
Check if the wiring of the CAN-bus is correct. The CAN-bus protocol in general is sensitive to errors. In case of major changes in the wiring or rewiring, always restart the inverter and battery completely.
Make sure that CAN-H and CAN-L are connected to the right pins. Different batteries use different connections. Check with the vendor of the battery for the right pins.
Use a CAN-cable with ground protection, e.g. UTP, connected to ground on one side.
Measure voltage at the CAN-connector at the inverter: the voltage shall be around 1.2 Volt
Make sure that the battery is grounded.
Physical connection interrupted
Check if the wiring of the RS485-bus is correct. Make sure that A/+ and B/- are connected to the right pins. If the meter is connected, the communication symbol on the meter will flash (little telephone or LED, depending on the type.
Although the RS485-cable is not very sensitive, it is recommended for a longer distance to use a RS485-cable with ground protection, e.g. UTP, connected to ground on one side.
Measure voltage at the RS485-connector at the inverter: the measured DC-voltage shall be around 1.7 Volt. Also measure the DC-voltage at the end of the RS485 cable: it also shall be 1.7 Volt. Attention: If a LoRa-bridge is being used for extension of the RS485, make sure that the firmware of the hybrid is not higher than 42.
Meter setting not correct
Enter Advanced Settings at the LCD of the inverter or through Helios.
Enter Storage Energy set > Meter select > Select the correct meter and type (e.g. Eastron or Acrel).
Make sure that the meter is set to connect to the right current transformer.
The hybrids are shipped with 40 mA meters. The current transformers shall be set accordingly e.g. primary value 120 A, secondary value 40 mA. For details check the documentation of the respective meter.
When the battery is not getting charged for some time, its voltage may drop below a certain value and give a fault message UN-BattV/Battery Undervoltage.
This value is battery specific. Please check the battery documentation.
For a WECO battery, it is specified that batteries higher than 35 Volts, can be recharged by applying forced charging. The BMS will start charging with a low current to avoid damage to the battery and gradually increase the current. If battery undervoltage has lasted too long, the BMS may run a full cycle charging up to 100%.
If the voltage of the WECO battery is below 35 Volts, special instructions are needed from WECO to recover the battery.
All batteries have self-discharge: WECO specifies 1% per month if a battery is not used. Make sure that the Forced Charge is on in the inverter so that it starts charging before the battery is drained completely.
If the battery is not in a healthy state, the BMS alarm will show. This may include a range of sub-alarms, temperature high or low, cell problems, and BMS software issues.
The most common in our case is when one battery has a different SoC than another battery in the same stack. In that case, the batteries must be charged separately, so that they are all at the same SoC level within 1 or 2%. After this process, the individual batteries can be reconnected again and the stack shall be restarted if the alarm has gone away.
It is recommended to use the battery-specific software/firmware of the battery vendor to check the status of the battery in case simple actions as above do not solve the problem.
Warning messages
Message | Description | Solution |
Fan alarm | Internal fan fault |
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Over-Load | Overload fault |
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Surge Alarm | Grid has surge | Grid has a surge. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service. |
Alarm messages
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 period of time. | 1. Confirm whether the connected power grid is normal.
2. Confirm whether AC cables of the 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
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1011 | Grid voltage is lower than standard code’s 1st level overvoltage limit for the set period of time. | |
UN-G-V02 | Grid voltage transient value is under 0.85 times of rated voltage peak value. | ||
OV-G-F01
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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.
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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 the manufacturer’s customer service with information of AV Voltage details and where voltage was measured. |
G-PHASE | 1016 | Grid has unbalanced 3 phase | 1. Confirm whether the connected power grid is normal.
2. Confirm whether AC cables of the power grid are properly connected. 3. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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G-F-FLU | 1017 | Grid frequency is abnormal | 1. Confirm whether the connected power grid is normal.
2. Confirm whether AC cables of the power grid are properly connected. 3. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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OV-G-I | 1018 | Phase A current RMS overcurrent
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1. Confirm whether the connected power grid is normal.
2. Confirm whether AC cables of the power grid are properly connected. 3. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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IGFOL-F | 1019 | Grid current tracking error
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1. Confirm whether the connected power grid is normal. 2. Confirm whether AC cables of the 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.
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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.
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UNB-BUS | 1022 | DC bus voltage and DC bus half voltage are not correct.
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1. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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UN-BUS01 | DC bus undervoltage | 1. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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UN-BUS02 | 1023 | Abnormal display of DC bus voltage
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1. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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OV-DCA-I | 1025 | DC1 current average overcurrent
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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.
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OV-DCB-I | 1026 | DC2 current average overcurrent
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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.
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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
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Grid interference 02
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1. Check whether the Grid is severely distorted. 2. Check whether the AC cable has a reliable connection. |
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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.
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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.
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PV ISO-PRO 01 | 1033 | PV Negative 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.
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PV ISO-PRO 02 | 1033 | PV Positive to ground fault
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ILeak-PRO 01
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1034 | Leakage current protection 01(30mA)
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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 strings, 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 an 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.
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ILeak-PRO 02
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1034
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Leakage current protection 02(60mA)
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ILeak-PRO 03
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1034
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Leakage current protection 03(150mA)
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ILeak-PRO 04
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1034 | Leakage current protection 04(300mA)
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RelayChk-FAIL | 1035 | Relay Fault
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1. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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DSP-B-FAULT | 1036 | Abnormal communication between Master and Slave DSP
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1. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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DCInj-FAULT | 1037 | DC components of AC current exceed limitations.
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1. Confirm whether the connected power grid is normal.
2. Confirm whether AC cables of the power grid are properly connected. 3. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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12Power-FAULT | 1038 | 12V power supply fault
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1. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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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.
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ILeak_Check
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1039 | Leakage current sensor Failure
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1. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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AFCI-Check | 1040 | AFCI selfcheck protection | Restart the inverter. If it is still not resolved, please contact the manufacturer’s customer service.
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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.
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IG-AD | 1047 | Grid current sampling error. | 1. Check whether the Grid is severely distorted. 2. Check whether the AC cable has a reliable connection. |
IGBT-OV-I | 1048 | IGBT overcurrent | Restart the inverter. If it is still not resolved, please contact the manufacturer’s customer service.
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OV-IgTr
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1050 | Grid current temporarily overcurrent
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1. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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OV-Vbatt-H/OV-BUS-H
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1051 | Battery hardware overvoltage/Vbus
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1. Check whether the battery circuit breaker has triggered. 2. Check whether the battery was damaged. |
OV-ILLC
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1052 | LLC hardware overcurrent
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1. Check whether the Backup load is overloaded. 2. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service. |
OV-Vbatt
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1053 | Battery overvoltage
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1. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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UN-Vbatt
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1054 | Battery undervoltage
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1. Restart the inverter, if it is still not ruled out, please contact the manufacturer’s customer service.
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NO-Battery
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1055 | Battery is not connected
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1. Check whether the battery has been well connected. 2. Check whether the circuit breaker or fuse have been triggered. |
OV-Vbackup
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1056 | The backup voltage exceeds the setting value
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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
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1057 | The backup load is overloaded
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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 confirm whether the fault still exists.
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WORD5_B13 | 105A | Mismatch Between DSP Software and Firmware | 1. Confirm whether the 4th/5th number of SN is consistent with the Model in LCD.
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Failsafe | 2010 | EPM communication cables aren’t connected.
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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
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2011 | Meter communication cables aren’t connected
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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 the meter is damaged.
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DSP_Comm_FAIL | 2014 | DSP Communication Failure | 1. Restart DSP to ensure whether the fault exists.
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Alarm1-BMS | 2015 | Battery BMS Alarm | 1. Restart the Battery to ensure whether the fault is existing.
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BatName-FAIL
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2016 | Wrong selection of battery brand
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1. Please confirm whether the selected battery brand is the same as the actual battery.
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Alarm2-BMS | 2017 | Battery BMS Alarm 2 | 1. Restart the Battery to ensure whether the fault is existing.
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DRM_LINK_FAIL | 2018 | DRM Connection Failure | Confirm whether DRM cable connection is reliable.
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LG-BMS-Fault | 2019 | LG Battery BMS Fault | Restart the battery and contact battery manufacture for handling if the fault still exists.
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LG-Comm-FAIL | 2021 | LG Battery Communication Failure | 1. Restart the battery and contact battery manufacture for handling if the fault still exists. |
Still need help? Please raise a case in Helios