Matrix T50x-02 - Error Code 02 AD Troubleshooting

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7.10 Error message 02AD troubleshooting
Figure A
[Symptom ]
a. MCB is over temperature.
[Solution]
a. Check if both fans are operating (there is a fan mounted to the MCB itself as well as an external fan).
Also check the connection of the fans at the MCB (Figure A).
b. If the fans are running correctly, replace the MCB.