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8.9 02A7 ERROR TROUBLESHOOTING
CHAPTER 8: TROUBLESHOOTING
ERROR MESSAGE 02A7
1) SYMPTOM:
a. Inverter output side is detected abnormal sudden increase over current.
2) SOLUTION:
a. Please check the Motor wire connection between the Motor and MCB (Figure A).
b. Please use the electric meter to check the 3 points (U / V / W) and see if there’s data of inside impedance (Figure B & C).
- If yes, replace MCB.
- If no, replace Motor set.
FIGURE A FIGURE B
FIGURE C FIGURE D