If its higher than the acceptable operating voltage, check the configuration of the PV generator. Note that the inverters normal working causes the ultrasonic vibrations, so limiting these is not an option. If it is within the acceptable range, contact the Sungrow service department for assistance. The inverter does not record output voltage (AC). Are They Worth It? Solar Net communication is not possible. Check whether the impedance between the PV string and the ground is excessively low. They automatically fix themselves in no time. 3. The inverter will detect it and generate corresponding error codes to notify you. The inverter will automatically resume operation and feed the grid if grid conditions return to the acceptable range. The ambient temperature is too high. Solar inverter error codes notify you of a situation threatening the normal operation of your solar power system. If not, restart the system, and if it persists, contact a technician. Should I Pay Cash For Solar Or Take Out A Loan? 
The PV array is not properly configured, causing the PV string open circuit voltage to exceed the inverter MPPT voltage maximum value. Enable it via iSolarCloud or the LCD menu. Physical barriers can also block the air ducts and cause ventilation issues. A temporary error that occurs when switching on a power stage set.Itll fix itself automatically. The inverter disconnects from the grid and, after a stipulated period, try to resume feeding power to the grid. Check if the grid voltage on the inverter is present. Both an alphanumeric error code and a plain text error message accompany the LED display in this group. All rights reserved. You can prevent inverter failure resulting from overload by simply avoiding connecting high power equipment like water pumps, refrigerators, and microwaves simultaneously. Upgrade the software to the correct version. The grid voltage is below the inverters acceptable lower limit. Ambient Environment. One of the inverters active devices is saturated. Slave DSP detects that grid voltage is above the acceptable inverter upper limit. How Do Solar Panels Work? That is, one of the current-carrying solar module or DC conductors interconnect cables are touching a grounded component. If you run inverters at a lower than usual operating temperature, you limit the evaporation of electrolytes, which improves the lifespan of the capacitors and the inverter. If they reset to 01/01/2000, carefully replace the battery with the inverter completely switched off. So, you may want to budget for inverter replacement at least once in the lifetime of your solar power system. But, for inverters that come with built-in overload protection, overloading can cause the inverter to heat up. So they require the services of a trained Fronius service technician. Once the inverter detects an issue, it generates and displays a code to notify you that something is wrong. Set the countrys grid standard. If the error persists, contact Sungrow. As mentioned earlier, continuously overloading an inverter will cause the inverter to heat up and fail. During installation, you didnt set the inverters grid standard. The PV string has been shielded from sunlight for a long time or is damaged. The neutral wire or PGND cable does not connect to the inverter. The main microcontroller cant correctly initialise the two DSPs due to a communication problem on the inverters internal bus. Many different things can go wrong and disrupt electricity generation from a solar PV system. Weve previously covered a few of the ABB Inverter error codes. The internal power chip of the sampling control board is faulty. Replace the monitoring board. Single-Phase vs Three-Phase Inverters Comparison, 4. One of the fans is defective, causing the temperature in the system to be too high. Check your grid voltage. However, if they persist, contact your installer. Weve previously treated some of the common Huawei Inverter error codes. Should it be close to the input OV threshold, review the configuration of the PV generator. Make the change through the inverter display or the advanced configuration software. The inverter disconnects from the grid for safety reasons. Overloading an inverter is simply connecting loads that exceed its rated power. DC LOW (307). So, if you notice that the fan is not rotating when your inverter is running, call a technician to replace the fan. The operating status LED lights up orange.The system will attempt a restart to fix the error automatically. Nows time for full coverage of these codes, including their meaning and solutions. The transient bus voltage is beyond the acceptable range. You can keep the environment of indoor inverters cool with air conditioners and fans. Switch off the inverter and wait a few minutes. Correct PV string connection if reversely connected. It is a temporary error that the inverter will automatically rectify. Unlike the second group, they are not mere warnings; they are errors. But in these modern times, inverters do more than power conversion. Check that theres grid voltage on the inverters AC terminal block. NL-Mon EEPROM error (Automatically restored default set switch off limits, Go to the Advanced menu to redo system-specific changes, A feature is deactivated (possibly after replacing a component), Confirm error, and update firmware using Bootloader or Fronius Solar.update/IG Plus, The grids voltage exceeds the inverters acceptable upper limit, The grid transient voltage exceeds the inverters acceptable upper limit. The inverter will automatically rectify it as grid conditions improve. True, not all inverter error codes mean a serious problem. Either PV1 or PV2 current surpasses the acceptable range, PV input voltage is beyond the bus voltage, If the error persists, contact the Sungrow service department, Open circuit at the ambient temperature sensor, Short circuit at the ambient temperature sensor, Open circuit at the radiator temperature sensor, Short circuit at the radiator temperature sensor, Abnormal communication of the Sungrow meter. The 4xx errors are caused by faulty hardware or software. Data from the Setup menu in the EEPROM is lost, Data from the Total menu in the EEPROM is lost. If both checks are positive, contact customer service. If it persists, contact Sungrow. If there are no damaged fuses, contact customer service. Primarily, inverters convert the direct current that your solar panels produce into alternating current suitable for your home appliances. Better still, increase the capacity of your inverter. Its a one-off memory error that is rectified automatically. At high DC voltage, the buck converter relay does not open. Check that grid frequency is within the acceptable range. There are communication issues between the control devices inside the inverter. After reviewing all power sets, the grid error is specified in more detail or remains at 109. Only the error message accompanies the LED signal; no code is displayed. This code appears in plain text. Check the grid connection, fuses and breakers. If everything is fine, contact ABB customer service. Low ambient temperature: Temperature outside the inverter is below -25C. If the error persists, contact Sungrow. Ensure that the inverter fans are working, that the air inlets are not blocked, and that the devices location is well ventilated. The execution time for the self-tests carried out on the relays inside the inverter is extremely high. If Existing Inverter is ON via LCD menu, ensure that its rated power is set correctly. Display error (the hardware or software version of the display or both is not compatible with IG brain). Damaged overvoltage surge arresters are positioned on the AC side check the inspection window on each surge arrester. The inverter should automatically recover. Every inverter comes with air ducts. The internal reference voltage is outside the range, Error in the internal grid voltage measurement, Error in the internal grid frequency measurement, Internal overvoltage on the mid bulk measurement, Error in the reading of leakage current of the PV generator. If absent, look out for protection work on the line and grid voltage on the supply point. The inverter will automatically fix the problem by reconnecting and resuming feeding power to the grid. The same thing goes for voltage.
The AC output current exceeds the inverters acceptable upper limit. If the 3 conditions are OK, but the code persists, contact Sungrow. The voltage difference between the input and output of the grid connection relay is too much. It will detect the particular reason, then generate and display the code for the particular reason. Check the system configuration. If it persists, contact Sungrow. If the error continues, contact Sungrow. If the fan is damaged, the inverter heats up. 1. However, this is a critical error that needs the attention of a Fronius technician. If AC voltage and frequency are out of range, the inverter disconnects from the grid. Get a megohmmeter to measure the insulation resistance in the PV field compared to the ground (you must take the measurement under the same environmental conditions that the error occurred)If the value is lower than one megaohm, call a technician for a check. These are codes beginning with the number 4. Modern smart inverters also monitor the performance of solar systems and give real-time reports. In this post, well answer your questions about inverter error codes, including: Well also get into details on the error codes of the Fronius Inverter, Sungrow Inverters, ABB Inverters, and Huawei FusionSolar Inverter. The inverter automatically recovers if grid conditions stabilise. Power generation creates heat, so your inverters will get warm. Theres s short circuit between the PV string and the PGND cable. However, like all semiconductor-based equipment, inverters operate best at cooler temperatures. Error in the inverter circuit (DC-AC side) recorded by the booster, Long start-up time for DC-AC circuit regime (inverter), A leakage current to the ground is detected. The bus voltage is beyond the acceptable range. These are codes beginning with the number 5. But if its within range, contact customer service. Also, regularly replacing worn-out capacitors will help you prevent failed capacitor problems and inverter failure. The inverter will resume in a few seconds. If not, contact a technician. The error is rectified automatically.
Check that the configuration of the inputs is done correctly. The inverter automatically recovers if grid conditions stabilise. While the error code is displayed, the inverter will continue working normally. If the error doesnt disappear, contact your system electricity provider. Turn off the AC output switch, then the DC input switch. The fan rotates while the inverter runs to blow cool air onto temperature-sensitive components and dissipate warm air. This code typically appears in the morning or evening when sunlight is low. Wait for the inverter to fix the error automatically. Interrupted communication between guard and DSP (digital signal processor), Error in grid voltage recording (power stage set does not match grid voltage), Error in grid frequency recording (power stage set does not match grid frequency). If it persists, call customer service. Acknowledge the error code by pressing any key, and it will disappear. Replace the fan if not. They are caused by the interruption of power feeding into the grid. If the impedance is lower than the default for a cloudy day, set the Insulation Resistance Protection. In addition to the operating status LED that flashes, they show an error code together with an error message. So, choose the inverter location wisely. These codes start with the number 1. Two or more power stage sets have similar software serial numbers. If so, check if the PV string is shielded from sunlight. General grid error.109 is the first error code displayed for grid errors. The grid voltage drops abruptly, or the power grid is short-circuited. If its built into the monitoring device, replace the device. Check the polarity of the strings recorded as inverted. If it exceeds the inverters allowable range, contact the grid company for a solution. For the faulty GFDI fuse, you can try replacing it. Get a voltmeter to measure the input voltage inside the inverter. Correctly set the date/ time. Wait a moment for inverter recovery.
Check IG brain for damage. Turn them back on after 5 minutes. Itll occur if the external temperature is over 60C. If its red, the surge arrester is damaged, and you must replace the cartridge. Short interruption of power going to the grid due to overcurrent (AC). If it doesnt, theres an internal fault, and you should contact a Fronius technician. Too many power stage sets were detected in the system, The power stage set is in boot mode, preventing activation, One of the power stage sets is not working properly. If not, contact Huawei support. Contact the operator to adjust grid voltage if its outside the acceptable range. The leakage current exceeds the acceptable upper limit. Reference power source for the DSP is working outside tolerance levels. If not, check for the absence of grid voltage on the supply point. Weve previously covered a few Fronius Inverter error codes. It could sometimes be caused by an internal malfunction and require customer service assistance. Link the components by going to Settings > Service > Accept boards.If the error persists, contact customer assistance. The grid voltage falls outside the inverters acceptable range. The inverter will try to fix the problem by reconnecting again automatically. It is rectified automatically. If it persists, contact a technician.
What better term for an error code flashing on your inverter display than inverter error code? While the error message is in plain text, the error code is in alphanumeric characters. The grid frequency is below the inverter protective lower limit. Voltage drops on the public mains usually cause these. The Slave DSP detects that leakage current is beyond the acceptable inverter upper limit. Ground fault detected. It is important that you understand when an error has occurred, what the error code means, and how to resolve it. Do I Need a Solar Battery? 3. Very high temperature inside the inverter. If it isnt, contact the power operator, but if it is, contact Huawei support. Check the grid frequency. So if your inverter is running hot, try to reduce the load. Inverter failure can be caused by problems with the inverter itself (like worn out capacitors), problems with some other parts of the solar PV system (like the panels), and even by problems with elements outside the system (like grid voltage disturbances). Solar inverters are designed so that they require little to no maintenance. Its rectified automatically. The voltage from the PV generator is lower than the activation voltage (Vstart). This indicates that the clock circuit is faulty. Check that the transformer is connected, the bridge has not short-circuited, and theres no intermediate circuit voltage damage. Switch on the inverter. How Do They Work? Current that rises above the current rating of the inverter can cause damage to specific components, especially the inverter bridge. Contact the grid for assistance if it is not within the inverters protection parameters. Inverter error is a fitting term because the inverter is the bearer of the error message. The protection for the DC circuit is triggered. Wait for the ambient temperature to rise to the operating range. Contact Instyle Solar if you need technical support. The operating status LED lights up red to indicate a critical error. How Do They Work? Check that these properly connect to the inverter.
POWER LOW(306)The code appears in plain text. It is a short-term error due to grid conditions. But if it is within the range, contact Sungrow.
This is a critical error fixed by conducting an AC reset or/ and firmware update.Switch AC circuit breaker on and off. Then restart the inverter and check if the date/time are correctly set. But the 037 error code tells you that the inverter is heating up because it is in a poorly ventilated spot, exposed to direct sunlight, or its air inlets are blocked. Restart the system. Check the grid voltage. Generally, these errors do not affect feed-in operation. So, it is automatically rectified when conditions normalise. Turn off the AC output switch and then the DC input switch. Rather, you should protect your inverter from heating up to intolerable levels. For Sungrow single-phase meter, check that the CT clamp of the 1-phase sensor is placed correctly, Turn the DC switch OFF, then check if there are no damaged cables, fuses, or loose terminals. One practical measure you can take is to ensure that the inverter is not exposed to direct sunlight. Short interruption of power going to the grid due to over temperature. If the error persists, contact your electricity provider. What does it mean if your inverter is running hot. 
