Growatt MAC 30-36KTL3-XL - Warnings and Troubleshooting; Warning Codes; Trouble Shooting

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3>Disconnect the wire connector of the fans with a flat head screw driver and remove the
fans from the fan guards, it is shown as below.
4>Clean fan, fan guards and heat sink or replace fan.
●Clean the fan and fan guards with air pump, brush or a damp cloth.
●Remove each fan separately for cleaning if necessary.
●Remove the fan that need to replace with a cross screwdriver, replace a new fan.
●Tidy up the wire.
5>Install the fan, fan guard fixed and the inverter again.
Figure 9.1
Figure 9.2
9.2 Trouble Shooting
●Work on the Growatt Max must be carried out by qualified personnel.
●Normally grounded conductors may be ungrounded and energized
when a PV isolation low is indicated.
●Risk of electric shock
DANGER
Warnings identify the current status of the inverter(Max), warnings do not related to a
fault and it does not affect the normal running of the inverter. When a warning with a
number after it appears in the display, it indicates a warning code and is usually cleared
through an orderly shutdown/re-set or a self-corrective action performed by the inverter.
See the warning code in the following table;
9.2.1 Warning
Warning
Message
Description
Suggestion
Warning
200
String fault
1.After shutdown,Check the panel is normal.
2.If error message still exists, contact manufacturer.
Warning
202
DC SPD function
abnormal
1.After shutdown,Check the DC SPD.
2.If error message still exists,contact manufacturer.
Warning
203
PV Circuit short
1.Check the PV1 or PV2 wiring is short-circuited.
2.If error message still exists,contact manufacturer.
Warning
206
AC SPD function
abnormal
1.After shutdown,Check the AC SPD.
2.If error message still exists,contact manufacturer.
Warning
207
U disk over-current
protection
1.unplug the U disk
2.Re-access U disk after shutdown
3.If the error message still exists, contact manufacturer.
Warning
400
Fan function
abnormal
1.After shutdown,Check the fan connection.
2.Replace the fan.
3. If the error message still exists, contact manufacturer.
Warning
401
Meter abnormal
1.Check if the meter is on
2.Check the machine and the meter connection is normal
Warning
402
Optimizer and
inverter
communication is
abnormal
1. Check if the optimizer is on.
2. Check whether the connection between the optimizer
and the inverter is normal
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
408
NTCBroken
1.Restart inverter
2.If error message still exists, contact manufacturer.
If the above suggestions do not work, please contact Growatt.