Are you experiencing issues with your Growatt inverter? Perhaps it’s not functioning properly or you’re encountering error codes? Knowing what are Growatt reset and calibration procedures can often solve these problems. Here, we’ll walk you through the steps on how to reset Growatt inverter and get it back to optimal performance.
How to Reset Growatt Inverter
Let us learn how to reset Growatt inverter. The steps may vary slightly depending on the specific model. However, here are some general steps that can be followed:
Step 1: Locate the solar panel inverter and identify the AC/DC toggle switch. Ensure you turn off the inverters correctly, as simply unplugging them is insufficient.
Step 2: If you have an AC power disconnect, switch it off to cut off the AC power supply. This step may or may not be necessary depending on your system setup.
Step 3: Find the solar DC disconnect, typically located beneath the solar panel array. Switch it off to disconnect the solar power.
Step 4: Close the main circuit breaker labeled PV on your electrical service panel to stop the flow of electricity.
Step 5: Wait for a duration of 30 seconds before proceeding. This interval allows the system to fully power down.
Step 6: Open the electrical service panel once the waiting period has elapsed which is 30 seconds.
Step 7: Open the solar disconnect box, switching it back on. Be prepared for a potentially loud popping sound during the reactivation process.
Step 8: Turn on the AC power disconnect, if applicable, to restore the AC power supply.
Step 9: Finally, switch on the hybrid solar inverter. Keep in mind that it might take several minutes up to 30 minutes for the system to fully boot up and resume normal operation.
Follow this sequence of steps when restarting your system to ensure the hybrid solar inverter remains undamaged.
Please check the user manual before proceeding as all the models of Growatt inverter are different. Each model has its own reset settings. You can also consult an expert in such cases.
Also Read: How to Read Solar Inverter Display
Growatt Inverter Fault Codes
There are some fault codes provided by the company Growatt for a better understanding of the problem your inverter is facing. Let us look at some of these fault codes.
1. Error 100 denotes 2.5 V Reference Voltage Fault
2. Error 101 denotes Communication Fault
3. Error 102 means that there is a Consistent Fault. The master and slave processors are receiving different data. There could be multiple reasons involving utility grid voltage or frequency change frequently. For this, restart the inverter. If the issue is not resolved, check the utility grid or contact Growatt.
4. Error 116 denotes EEPROM Fault.
5. Error 117 denotes Relay Fault
6. Error 118 denotes the Init Model fault
7. Error 119 denotes GFCI device damage
8. Error 120 denotes HCT Fault
9. Error 121 means Communication Fault. The master processor is not able to receive data from the slave processor. To fix this, restart the inverter. If the issue is not resolved, contact Growatt.
10. Error 122 denotes Bus Voltage Fault
Refer to the error codes and warnings to know what the issue is with the inverter and work on fixing it accordingly.
For a comprehensive guide on troubleshooting and error codes, take a look at the 32 Troubleshooting Solar Inverter Problems and Solutions.
How to Reset Growatt Inverter 5000
The specific answer to how to reset Growatt inverter depends on the model you are resetting. And if you are wondering how to reset Growatt inverter 5000, then worry not. For Growatt SPF 3500-5000 ES Off-grid Inverter, below mentioned are the steps to reset the inverter.
Step 1: Once the batteries are well-connected, you can turn on the inverter by pressing the ENTER key and holding it for 3 seconds.
Step 2: The inverter goes into setting mode. To select programs, press the UP and DOWN button simultaneously.
Step 3: Multiple programs will be shown. For the Output source priority, the programs are SOL, UEI, SBU, SUV, etc. Battery type includes IGM, FLOOD, USE, and LITHIUM. Charger source priority modes include CSO (Solar First), CUE (Grid First), SNU (Solar and Grid), and OSO (Only Solar).
Step 4: Disconnect the solar and AC power, turn off the inverter switch, and allow the inverter to power off after 15 to 60 seconds. Then, you can restart the device.
You can also change the voltage of the inverter. Set as per requirements and refer to the user manual as provided by the company. Now you know how to reset Growatt inverter 5000. Let’s learn how to factory reset Growatt inverter in the next segment.
Cross-Reference: Troubleshooting guide for Growatt SPF3k-5kTL HVMoff-grid Inverter
How to Factory Reset Growatt Inverter
So, what are Growatt Reset and Calibration Procedures? The answer to the question is discussed below in detail.
A. 24P, 48P, and LVM-ES Inverters
To perform a factory reset on the 24P, 48P, and LVM-ES inverters, follow these steps.
Step 1: Simultaneously press the UP and DOWN buttons on the inverter.
Step 2: When prompted with the PAS screen, enter the password 305 using the appropriate input method.
Step 3: Slowly press the ENTER button three times.
Step 4: Press the ESCAPE button.
Step 5: After completing the above steps, disconnect the solar and AC power sources from the inverter. Turn off the inverter switch and wait for it to power down, which usually takes around 20 to 60 seconds.
Step 6: Once the inverter has shut down completely, restart it by turning it back on.
Also See: How to Reset Inverter Overload
B. Growatt 12000T to 6000T Inverter Models
For factory reset on the Growatt 12000T to 6000T inverter models:
Step 1: Simultaneously press and hold down the ENTER and Escape buttons for more than 5 seconds.
Step 2: Continue holding the buttons until the unit resets to its factory default settings.
After learning how to factory reset Growatt inverter, let us learn the calibration process.
Step 1: Press the UP and DOWN buttons on the inverter together.
Step 2: Enter the password 111 and press the enter button.
Step 3: Scroll through the available parameters until you find the one that requires calibration. Please note that if a parameter requires an increase in value, it will have a prefix indicating addition (A).
Step 4: Conversely, if it requires a decrease, it will have a prefix indicating subtraction (S). Adjust the parameter value accordingly by using the appropriate prefix and suffix.
Step 5: Exit the parameter adjustment menu.
Step 6: Shut down the inverter and restart it again.
For a better understanding, you can also check out how to reset inverter fault?
Moreover, to address fault codes 04, 56, and 19 on a 24V unit or fault code 06 on a 48V unit of an inverter, follow the below-written steps.
Step 1: Simultaneously press the UP and DOWN buttons on the inverter.
Step 2: Enter the password 820 and access the setting page number 10.
Step 3: Press the ENTER button and adjust the battery number to 2 pieces (4 pieces for a 48P). Confirm the change by pressing ENTER.
Step 4: Exit the setting page.
Step 5: Shut down the inverter and then restart it.
And there you have it! The procedure of how to reset Growatt inverter is quick and easy, giving you the power to get your solar system back up and running smoothly. So, don’t let a glitchy inverter hold you back. Now that you have learned what are Growatt reset and calibration procedures, you’ll be back to harnessing the power of the sun in no time.
Source: Growatt Official Support Page