Eaton EFX48 e-Fuse Series, Installation And Operation Manual

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EFX48-xx Series with RM3-340/440 Installation and Operation Guide
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Copyright © 2019 Eaton Corporation. All Rights Reserved.
IPN March 2019
Troubleshooting
Use the table to troubleshoot minor installation and operational problems. For additional
assistance see contact details on page 161. Return items for replacement or repair with a
completed Equipment Incident Report on page 159.
System Problems
Problem Possible Cause Required Action
All rectifiers are off (no
LEDs on) and EFX48 system
controller display is blank.
AC supply to the system is off
and batteries are not connected
or are fully discharged.
Restore ac supply.
Green LED on one or more
rectifiers is off.
AC supply to rectifier(s) off or
one or more phases are off.
Restore ac supply.
Rectifier(s) not fully inserted. Insert rectifier and tighten retaining
screw.
Internal rectifier fault. Remove the rectifier and insert another
one in the same slot. If second rectifier
fails to start, then there is a fault with the
rectifier position. Check ac connections.
If the second rectifier operates normally,
then the first rectifier is faulty and must
be returned for service.
Rectifier yellow LED flashes EFX48 is starting. Wait for EFX48 to complete start-up.
Rectifier has not registered with
the system controller.
Remove, and then re-insert the rectifier.
Replace the rectifier with another
rectifier. If second rectifier fails to
register, then there is a fault with the
rectifier position or with the EFX48
system controller. Check rectifier comms
bus wiring if the fault persists then swap
the EFX48 for another one.
If second rectifier registers, then first
rectifier is faulty and must be returned
for service.
If the replacement EFX48 fixes the fault
then the first EFX48 is faulty and must be
returned for service.