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Growatt MTL-S, Troubleshooting Manual, Page: 12 / 18

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Growatt MTL-S Troubleshooting Manual Download Page 12

                                           

 

Growatt New Energy

 

Australia Pty Ltd 

C1, 27-29 Fariola Street,  
Silverwater NSW 2128 

 

Phone: 02 8065 1298 

Email: [email protected]  

Email: 
[email protected] 

www.ginverter.com      

 

 

 

1.4

 

AC F Outrange 

Cause: The grid frequency is out of permitted range, or the inverter’s frequency limits is 

incorrect. 

Error message 

Description  

Solutions 

AC F Outrange 

Grid frequency out of 
permitted range 

1. Check grid frequency  
2. Contact Growatt to claim 
warranty 

 

1.5

 

Over Temperature 

Error message 

Description  

Solutions 

Over Temperature 

Temperature outrange 

1. Reboot inverter  
2. Contact Growatt to claim 
warranty 

 

1.6 Output High DCI 

Error message 

Description  

Solutions 

Output High DCI 

Output current DC offset 
too high 

1. Reboot inverter 
2. Contact Growatt to claim 
warranty 

 

1.7

 

Residual I high 

Error message 

Description  

Solutions 

Residual I high 

Leakage current too high 

1.

 

Reboot inverter 

2.

 

Test the AC leakage 
current on solar 
switches  

3.

 

Test DC side following 
1.3 procedures  

4.

 

Contact Growatt to 
claim warranty, if the 
leakage issues are clear. 

 

1.8

 

PV Voltage High 

Error message 

Description  

Solutions 

Summary of Contents for MTL-S

Page 1: ...th a number after it appears in the display it indicates a fault on the inverter or the system and is usually cleared through an orderly shutdown re set or a self corrective action performed by the inverter See the faulty codes in the following table and corresponding solutions The faulty code will display on the first line of the LCD screes of Growatt inverters please ask the customers to read th...

Page 2: ... 2 1 AC voltage reading 262V 1 2 2 2 NB for 5000UE model if the inverter indicate AC V OUTRAGE please ask your customer to check the AC switches first including AC isolator and solar main supply switch in the Main Switch Board 1 2 1 MTL S model inverter If the inverter s model is MTL S please find DIP switch at the bottom of inverter and set it to switch 1 5 on while switch 2 3 4 off Please refer ...

Page 3: ... Email australia ginverter com Email ausupport ginverter com www ginverter com Fig 1 2 1 2 2 voltage setting by knocking the inverter for old model please check the LCD display of the inverter below if the AC figure is lower than 262V or not If yes please follow the next steps 1 2 2 1 lower than 262V ...

Page 4: ...rt communication function via cable please use RS232 USB cable and PC computer to recalibrate your inverter s voltage sensor as follows Turn on DC switch compare the grid voltage measured by multi meter and the AC voltage displayed on the inverter If the difference is more than 3V please calibrate the detected AC voltage of the inverter by following steps Connect the inverter to PC via RS232 USB c...

Page 5: ...nitoring If the inverter had been monitored by Growatt Wi Fi module then the setting can be changed via computer laptop remotely ShineServer set inverter tripping voltage Vmax Please follow the below steps to change the tripping voltage Vmax settings via ShineServer 1 After signed in click Plant Device List then click inverter A list of monitored inverter under the monitoring would then available ...

Page 6: ...nge again for 3 times 1 2 3 ShineServer change inverter 10 minutes average voltage 255v setting Please note this option is only valid for new version inverters installed after 9 October 2016 Which meet the new AS4777 2 2015 standard Old version inverters installed before that date are not have 10 minutes average voltage 255v limitation thus this step is NOT required Please follow the below steps t...

Page 7: ...support ginverter com www ginverter com ShineServer 1 Continue with the above process on inverter setting page click the page would then display an additional register option as follows 2 Choose the option register and fill in the register number 112 and the set value We suggest changing it to 265 volt Please fill in 2650 there As follows ...

Page 8: ... Tools we need to prepare are RS232 to USB cable Laptop or computer ShineBus software Change tripping voltage Vmax setting Please follow the below steps to change the tripping voltage Vmax setting 1 Get ShineBus software from Growatt and install it to your laptop Then connect inverter and laptop via RS232 to USB cable 2 Switch on the DC switch to power on inverter and switch OFF the AC switch to d...

Page 9: ...n COM field Set inverter s COM address by knocking to inverter s knock control panel please refer to the manual and fill the address in InvAdd field Fill in the set value in Set value field We suggest to change 14 R1 Vac High value to 5v higher thus is 268v 7 Click Operate to apply the change Once inverter accepted it would show Set OK in Set Result filed 8 Tick the Read checkbox and click Operate...

Page 10: ...ion inverters installed after 9 October 2016 Which meet the new AS4777 2 2015 standard Old version inverters installed before that date are not have 10 minutes average voltage 255v limitation thus this step is NOT required Please follow the below steps to change the tripping voltage 10 minutes average voltage 255v setting 1 Continue with the above process Choose 21 Vac 10min Avg as follows 2 Fill ...

Page 11: ... disappear in the afternoon Inspection needed it could be a leakage on DC side anywhere from panels to DC isolator including earth wires and solar panels Inspection procedure of insulation problem on site Check the earth wiring on AC side check the isolation on DC side PV side 1 Check if the inverter s AC side is well grounded 2 Switch off the DC isolator unplug the DC connectors test the positive...

Page 12: ...anty 1 5 Over Temperature Error message Description Solutions Over Temperature Temperature outrange 1 Reboot inverter 2 Contact Growatt to claim warranty 1 6 Output High DCI Error message Description Solutions Output High DCI Output current DC offset too high 1 Reboot inverter 2 Contact Growatt to claim warranty 1 7 Residual I high Error message Description Solutions Residual I high Leakage curren...

Page 13: ...lerable value Disconnect the DC switch immediately check DC input voltage 1 9 Auto Test Failed Error message Description Solutions Auto Test Failed Leakage current too high Reboot inverter 1 10 Please Select VDE0126 1 1 VDE0126 1 1 is a country selection code please follow instructions below to fix this problem It s all about single knock to switch the country For Australia we choose VDE0126 1 1 a...

Page 14: ...Growatt New Energy Australia Pty Ltd C1 27 29 Fariola Street Silverwater NSW 2128 Phone 02 8065 1298 Email australia ginverter com Email ausupport ginverter com www ginverter com ...

Page 15: ...Growatt New Energy Australia Pty Ltd C1 27 29 Fariola Street Silverwater NSW 2128 Phone 02 8065 1298 Email australia ginverter com Email ausupport ginverter com www ginverter com ...

Page 16: ...Growatt New Energy Australia Pty Ltd C1 27 29 Fariola Street Silverwater NSW 2128 Phone 02 8065 1298 Email australia ginverter com Email ausupport ginverter com www ginverter com ...

Page 17: ... Error 101 Error 102 Error 121 Communication error 1 Reboot inverter 2 Contact Growatt to claim warranty Error 111 Neutral line charged 1 Test N line and L line reversed or not 2 Check the inverter terminals damaged or not 3 Contact Growatt for a warranty if damaged spot found Error 116 EEPROM fault 4 Reboot inverter 5 Contact Growatt to claim warranty Error 117 Relay fault 1 Reboot inverter 2 Con...

Page 18: ... Fault description Suggestions No display no light 1 Check if PV Array isolator is on 2 Contact Growatt to claim warranty Display is filled with black square Contact Growatt to claim warranty Inverter keeps reconnecting DC input voltage is too low 200V Inverter trips over frequently AC V Outrange AC circuit breaker trips over 1 Check the isolator tripping off or not once the inverter is on 2 If th...

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