ACS355 fault A5001 This topic contains 1 reply, has 2 voices, and was last updated by John C 1 year ago. Author Posts June 30, 2017 at 8:04 am #9987 David horneParticipant The acs355 drive sowing fault code (A5001). That means the drive is not responding. So how i solve the fault? June 30, 2017 at 8:20 am #9988 John CGalco Representative A5001 means “Drive is not responding” and may be a keypad fault, it does not see the drive. Make sure the keypad is seated in place correctly, if no improvement, try another keypad and the little RJ45 adapter piece. Let us know what happens, ok? Author Posts You must be logged in to reply to this topic.