Frequently Asked Question - Service - SHENZHEN SUNRISE NEW ENERGY CO.,LTD

Frequently Asked Question

Q1: A001 input undervoltage

Analysis: The DC input PV1 voltage is low. The DC input PV2 voltage is low

Solution:

1. If it is in the morning and evening or in bad weather; Everything else is normal; It should be caused by insufficient input power; As a normal phenomenon, wait for the weather to improve; The machine will automatically connect to the grid to generate electricity and can be ignored.

2. Turn off the AC and DC switches, and unplug the DC input terminals of the inverters one by one. Use a multimeter to check whether the positive and negative voltage terminals of each DC input are connected incorrectly, and whether the voltage is normal and within the working voltage range of the inverter. Verify that the DC connection is correct, restart the inverter, and check whether the alarm is repeated.

3. Check whether the running mode is incorrectly set.

4. Exchange two inputs; See if there is a problem with the same MPPT.

Q2: A002 bus undervoltage

Analysis: Inverter internal DC bus undervoltage

Solution:

1. Check whether the DC input side of the inverter is correctly connected and whether the voltage is within the working range of the inverter.

2. After the inverter is powered off and restarted (turn off the DC and AC switches, and wait 5 minutes, turn on the DC and AC switches again), check whether the inverter runs normally and whether the fault occurs again.

Q3: A003 AC undervoltage

Analysis: Low power supply of the public grid

The solution:

1. Observe the phase voltage and frequency displayed by the inverter on the display screen; Whether it is consistent with the normal power grid voltage and frequency;

2. Check whether the AC terminal and power distribution box are securely connected. Whether the wire ends are loose or fall off; Whether the switches in the distribution box are tripping;

3. Use a multimeter to check whether the network cables are correctly connected and whether the phase voltage and line voltage are too low.

4. Check whether the safety Settings of the inverter and the undervoltage point Settings of the power grid are in accordance with the actual situation;

5. Wait for the power grid voltage to return to normal, and check whether the inverter can automatically restore the grid connection.

Q4: A004 AC overvoltage

Analysis: The public grid voltage is high

The solution:

1. Observe the phase voltage and frequency displayed by the inverter on the display screen; Whether it is consistent with the normal power grid voltage and frequency;

2. Use a multimeter to check whether connections to the power grid are correct and the voltage is too high.

3. Check whether the safety Settings of the inverter and the power grid overvoltage point Settings are in accordance with the actual situation;

4. Wait for the grid voltage to return to normal, and observe whether the inverter can automatically restore and connect to the grid;

5. Check whether the N cable and PE cable are connected properly. And meet the specifications.

Q5: A005 AC underfrequency

Analysis: The frequency of public power grid is too low

The solution:

1. Observe the frequency of the power grid displayed by the inverter on the display; Whether it is consistent with the normal power grid frequency;

2. Check whether the AC terminal and power distribution box are securely connected. Whether the wire ends are loose or fall off; Whether the switches in the distribution box are tripping;

3. Use a multimeter to check whether the power grid connection is correct and the power grid frequency is too low.

4. Confirm whether the safety setting of the inverter and the underfrequency setting of the power grid are in line with the actual situation;

5. Wait for the power grid frequency to return to normal, and check whether the inverter can automatically restore the grid connection.

Q6: A006 AC overfrequency

Analysis: The frequency of public power grid is too high

The solution:

1. Observe the frequency of the power grid displayed by the inverter on the display; Whether it is consistent with the normal power grid frequency;

2. Use a multimeter to check whether the power grid connection is correct and the power grid frequency is too high.

3. Confirm whether the safety Settings of the inverter and the overfrequency Settings of the power grid are in line with the actual situation;

4. Wait until the power grid frequency returns to normal, and check whether the inverter can be automatically connected to the grid.

Q7: The A007 clock is incorrect

Analysis: The inverter clock is incorrectly set

The solution:

1. Check whether the clock Settings of the inverter are correct.

2. Reset the inverter time in the background or on the display panel and check whether the alarm is repeated.

Q8: Box A030 is lost

The bus box fails to communicate with the inverter

Solution: Check whether the 485 line connected to the DC busbar and the inverter is connected correctly; Whether there is wrong connection or loosening or falling off phenomenon.

Q9: The E001 input voltage is too high

Analysis: The DC input voltage is too high

The solution:

1. Turn off the AC and DC switches of the machine, and unplug the DC input terminals of the inverters one by one. Use a multimeter to check whether the positive and negative voltage terminals of each DC input are connected incorrectly, and whether the voltage is normal and within the working voltage range of the inverter.

Q10: E003 bus overvoltage

Analysis: Inverter internal bus overvoltage

The solution:

1. Check whether the DC input side of the inverter is correctly connected and whether the voltage is within the working range of the inverter.

3. Check whether the N and PE cables on the AC side are connected properly. And meet the specifications.

Q11: The E004 booster fails

The inverter booster circuit is faulty

The solution:

2. Check whether the DC input side of the inverter is correctly connected and whether the voltage is within the working range of the inverter.

3. After the inverter is powered off and restarted (turn off the DC and AC switches, and wait 5 minutes, turn on the DC and AC switches again), check whether the inverter runs normally and whether the fault occurs again.

Q12: E005 AC overcurrent

The internal AC output of the inverter overflows

The solution:

1. Check whether too many components are configured in the system and the total DC power is too large.

2. Check whether there is a short circuit between the AC line and the inverter output on the AC side.

4. Check whether the AC voltage jumps too much.

Q13: E006 overheats

The internal temperature of the inverter is too high

The solution:

1. Check whether the fan of the inverter works properly.

2. Check whether the fan of the inverter is blocked or blocked by debris.

3. Check whether the installation of the inverter meets the specifications and the ventilation conditions are good;

4. Check whether the inverter is often in direct sunlight or there is a large heat source near the inverter.

Q14: Low insulation impedance of E007

The insulation impedance of the inverter external port system is too low

The solution:

1. Check whether the DC cables and component cables of the inverter are in poor contact or damaged. (can measure the positive and negative voltage of the component to the ground to determine);

2. Check whether the inverter, cables, and components are in a very humid environment.

3. In the dry condition, power off the inverter and restart it (turn off the DC and AC switches, wait 5 minutes, turn on the DC and AC switches again), and check whether the inverter works properly and whether the fault occurs again.

Q15: E009 Internal communication error

The master DSP cannot communicate with the slave DSP, and the master DSP data is invalid

The solution:

1. After the inverter is powered off and restarted (turn off the DC and AC switches, wait 5 minutes, turn on the DC and AC switches again), check whether the inverter runs normally and whether the fault reoccurs.

2. Replace the control board.

Q16: E010 leakage current is large

Large leakage current of the system or inverter

The solution:

1. Check whether the DC, AC, and component cables of the inverter are improperly connected or damaged.

2. Check whether the ground cable between the photovoltaic panel and the panel is securely connected

3. Check whether the inverter, cables, and components are in a very humid environment.

4. In the dry condition, power off the inverter and restart it (turn off the DC and AC switches, wait 5 minutes, turn on the DC and AC switches again), and check whether the inverter works properly and whether the fault occurs again.

Q17: The E011 relay is faulty

The inverter internal relay is faulty

The solution:

1. Verify that the DC and AC cables of the inverter are correctly connected. In particular, whether the N line and PE line are properly connected;

2. Turn off the switches on the AC side and DC side of the inverter. Wait for 5 minutes, and then turn on the switches on the AC side and DC side again.

Q18: The E012 fan module is faulty

The internal fan of the inverter is faulty

The solution:

1. Check whether the fan cover is deformed.

2. Observe the normal operation of the inverter fan (when the machine is running normally, put your hand on the air inlet and outlet on the left and right side of the machine to feel whether there is air flow);

3. After turning off the AC and DC switches of the inverter, wait 5 minutes and check whether the fan cable is loose.

4. Replace the faulty fan module and check whether the fault is repeated.

Q19: The E013 memory is abnormal

The internal memory of the inverter is faulty

Solution: Power off and restart the inverter (turn off the DC and AC switches, wait 5 minutes, turn on the DC and AC switches again), and check whether the inverter runs properly and whether the fault occurs again.

Q20: The DC component in the E014 AC is too large

The DC component of the AC output is too large

Q21: E015 output short-circuit

The AC output short-circuit fault occurs

The solution:

1. Check whether the AC output cable of the inverter and related lines and components on the power grid side are grounded or short circuit.

2. Turn off the switches on the AC side and DC side of the inverter. Wait for 5 minutes, and then turn on the switches on the AC side and DC side again.

Q22: E018 Input overcurrent

Dc input overcurrent

The solution:

1. Check whether too many components are configured in the system and the DC power is too large.

Q23: E019 data consistency failure

The sampling of voltage, frequency, leakage current, or DC components of the primary and secondary controllers is inconsistent

Q24: E020 DC power reverse

Q25: The E023 ground cable is not connected

Valid under the new Australian standard, the inverter ground wire is not connected, the judgment threshold can be set on the display screen (the latest version of the display software is required)

The solution:

1. Check whether the ground cable is properly connected and complies with specifications.

2. Check whether the protection threshold is appropriate through the display;

3. Change the protection threshold or disable this function.

Q3: E021 meter communication failure

The anti-reverse flow function is effective when used, and the communication between the meter and the inverter is abnormal

The solution:

1. Check whether the RS485 cable is connected.

2. Check whether the power supply line of the meter is normal;

3. Check whether positive or negative connections of the RS485 port are reversed.

Q2: Box A030 is lost

The bus box fails to communicate with the inverter

Solution: Check whether the 485 line connected to the DC busbar and the inverter is connected correctly; Whether there is wrong connection or loosening or falling off phenomenon

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