How do I fix Model Mismatch on a Growatt?

Check inverter model on label matches ShineServer registration. Check firmware version matches model Then: Do not attempt to reflash firmware on site — contact Growatt UK support with model and serial number

Growatt

Error 406

Model Mismatch

Inverter hardware model does not match the firmware or a connected accessory.

Common causes

Wrong firmware flashed to inverterMismatched expansion moduleFactory configuration error

What to check

STEP 1

Check inverter model on label matches ShineServer registration. Check firmware version matches model

STEP 2

Do not attempt to reflash firmware on site — contact Growatt UK support with model and serial number

Escalate if

Always escalate model mismatch faults — do not attempt firmware changes without Growatt guidance

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More Growatt fault codes

Error 200

AFCI — Arc Fault Detected

PV Isolation Low (RISO)

Error 300

AC Voltage Out of Range