Growatt MID 10KTL3-X, Installation & Operation Manual

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Warning Code

Fault Discription

Suggestion

Warning 404

EEPROM abnormal.

1. Restart inverter.

2. If error message still exists,contact 

manufacturer.

Warning 405

DSP and COM firmware 
version unmatch

1. Check  the firmware version.
2. If error message still exists,contact 
manufacturer.

Warning 406

Boost module error

1. Restart inverter

2. If error message still exists, contact 

manufacturer.

Warning 407

NTC Temperature too 
high or NTC is broken

1. Restart inverter
2. If error message still exists, contact 
manufacturer.

Warning 408

NTCBroken

1. Restart inverter
2. If error message still exists, contact 
manufacturer.

Warning 409

CT Connect abnormal

1. Check the CT connect Whether it is 
correct or not.
2. If error message still exists, contact 
manufacturer.

13.2.2 Error code

Error Code

Fault Discription

Suggestion

Error 200

AFCI Fault

1. After shutdown,Check the panel terminal.
2. Restart inverter.
3. If error message still exists,contact 
manufacturer.

Error 201

Leakage current too 
high

1. Restart inverter.
2. If error message still exists,contact 
manufacturer.

Error 202

The DC input voltage is 
exceeding the maximum 
tolerable value

1. Immediately disconnect the DC switch and 
check the voltage
2. If the fault code still exists after the 
normal voltage is restored, contact 

manufacturer

Error 204

PV Reversed

1. After shutdown,Check the inverter 
terminal.

2. Restart inverter.
3. If error message still exists,contact 
manufacturer.

Error Code

Fault Discription

Suggestion

Error 300

AC V Outrange

1. Check grid voltage.
2. If the error message still exists despite the 
grid voltage being within the tolerable 
range, contactmanufacturer.

Error301

AC terminals reversed

1: Check AC terminals

2: If error message still exists, contact 

manufacturer.

Error 302

No AC Connection

1. After shutdown,Check AC wiring.
2. If error message still exists,contact 
manufacturer.

Error 303

PE abnormal

1. Check PE,to ensure that the PE line 

contact good.

2. If error message still exisits,contact 

Manufacturer

Error 304

AC F Outrange

1. Restart inverter.
2. If error message still exists,contact 
manufacturer.

Error 305

Over Load Fault

1. Check whether output load over range; If 

load too large, please reduce load.

2. If error message still exists, contact 

manufacturer.

Error 306

CT LN Reversed

1: After shutdown

，

Check the SP-CT 

connection.
2: If error message still exists,contact 
manufacturer.

Error 307

Communication 
fault,M3 didn't receive 
SP-CT data

1: Check communication wire
2: If error message still exists,contact 
manufacturer.

Error 308

Communication 

fault;Pairing time too 

long

1: Restart pairing

2: If error message still exists,contact 

manufacturer.

Error 400

DCI bias abnormal

1. Restart inverter

2. If error message still exists, contact 

manufacturer.

Error 401

DC Voltage High Fault

1. Restart inverter.
2. If error message still exists,contact 

manufacturer.

Error 402

Output DC current too 

high

1. Restart inverter.

2. If error message still exists,contact 

manufacturer.