EPHO is output phase loss fault.
Make sure that there is no output disconnects or output contactor is open before running /stopping.
Example: EPHO comes when we are dropping the output contactor and when we remove the run command (Give the Stop command). The drive is still trying to ramp down the motor
when the output contactor is being opened. If this is the case, then please do not open the output contactor until the VFD has ramped down.
It is possible to disable the EPHO fault ,for this, Program the parameter F605 - 0.