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Q : How to slove GD series VFD appear OV1 fault when starts, cannot start problem?
A: OV1 is an acceleration over-voltage fault. First confirm whether the voltage of the input power supply is too high. If the input power supply is normal, disconnect the load and whether the no-load operation is normal. If the no-load status still reports OV1 fault, according to the customer’s on-site experience, the possible reason is insulation problem. Check the insulation of the motor cable and the connection between the motor terminal and the cable.
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