Don't disconnect the DC connector while the inverter is connected to the
grid.
Before turning the inverter on, please make sure the PV/Battery input voltage and current
are within the MPPT limits.
Follow the steps below to turn the inverter on:
1.Gently pull the cables on the PV/AC/Battery side back to ensure that they are securely
connected.
2.Make sure the cable polarity is correct and voltage is less than 1100V.
3.Switch on the built-in DC switch at the bottom of the inverter.
4.Switch on the PV/Battery Array and DC isolator next to your inverter. If the switch is not
available, skip this step.
5.Switch on the Solar AC isolator if the inverter is more than 3 meters away from your
switchboard.
6.Switch on the solar supply main switch in the switch board.
12.1 Powering on the inverter
12.2 Powering off the inverter
Steps to turn off the inverter:
1. Disconnect the AC circuit breaker to secure it against reconnection;
2. Turn off the DC switch;
3. Turn off the BAT input switch;
4. Check the operating status of the inverter;
5. Wait until the LED and OLED display are off, indicating that the inverter is completely
powered off.
12 Powering on/off the inverter
11 Maintenance and cleaning
11.1 Checking the heat dissipation
11.2 Checking the inverter
11.3 Checking the DC disconnect
For reduction in power output due to high temperature, you are advised to clean the
heat sink to improve heat dissipation.
Before cleaning a dirty inverter, turn off the AC breaker and the DC switch, and wait
until the inverter completely shuts down. Clean the enclosure lid, the display and the
LED indicators with a cloth moistened with clear water. Do not use any cleaning agents,
such as solvents and abrasives, which may cause damage to the equipment and its
components.
To ensure safe operation of the system, it is recommended to periodically check the DC
disconnect and the cables for any visible damage or discoloration. If any damage or
discoloration is found, please contact your installer.
Ø To extend the service life of the DC disconnect, it is recommended to turn the rotary
switch from the ON position to the OFF position 5 times in a row once a year. This
will clean the contacts of the switch and ensure optimal performance.
Troubleshooting 13
13.1 Error message
13.2 System warning
An error message will be displayed on the OLED screen and the LED indicator will turn red
when a fault occurs, indicating a system fault or an inverter fault has occurred. In some
cases, you may need to contact Growatt for technical assistance. To provide you with the
necessary support, please have the following information ready:
●Serial number
●Model
●Error message on the OLED screen
●Brief introduction of the problem
●Grid voltage
●DC input voltage
●Can you reproduce the failure?
●Has this problem occurred in the past?
●What were the environmental conditions like when the problem occurred?
Information about photovoltaic panels:
●Manufacturer name and model number of the PV panel
●Output power of the panel
●Voc of the panel
●Vmp of the panel
●Imp of the panel
●The number of panels in each string
●If you need to replace the device, please ship it in the original box.
1.After shutdown, check if the panel is normal.
2.If the error message persists, please contact
Growatt support.
String/PID quick-
connect terminals
abnormal
1.After shutdown, check the string terminal wiring.
2. If the error message persists, please contact
Growatt support.
1.After shutdown, check the DC SPD.
2. If the error message persists, please contact
Growatt support.
1.Check if the PV1 or PV2 wiring is short-circuited.
2.If the error message persists, please contact
Growatt support.
Dry contact
function abnormal
1.After shutdown, check the dry contact wiring.
2.If the error message persists, please contact
Growatt support.
1.Restart the inverter.
2.If the error message persists, please contact
Growatt support.
1.After shutdown, check the AC SPD.
2.If the error message persists, please contact
Growatt support.
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Danger
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