Vertiv™ NetSure™ DC/DC Converter Module User Manual
11
Table 3.1: Converter Module Troubleshooting
Symptom
Possible Cause(s)
Suggested Action(s)
Power Indicator
(Green) Off
No input voltage.
Make sure there is input voltage.
Internal input fuse open.
Replace the converter.
Protection Indicator
(Yellow) On
DC input under/over voltage.
Correct the DC input voltage to within the acceptable range.
Moderate load sharing imbalance. Check if the converter is properly seated in the shelf. If this does not
correct the fault, replace the converter.
Converter not inserted into the
slot completely.
Remove and properly insert the converter.
Converter over-temperature
protection.
Fan rotor blocked: remove any object that may be blocking the fan.
Ventilation blocked (inlet or outlet): remove any object that may be
blocking the inlet or outlet.
Ambient temperature too high or rectifier inlet too close to a heat
source: lower the ambient temperature or relocate the heat source.
Converter in ECO Standby Mode
when ECO Mode is active in
controller.
--
Protection Indicator
(Yellow)
Flashing
Loss of communication with
controller (the converter can
provide power).
Check the communication cables.
Remove and properly insert the converter.
Alarm
Indicator
(Red) On
Severe load sharing imbalance.
Converter output disabled for any
reason, including overvoltage
shutdown.
Remove the converter, wait 30 seconds or more (until the LEDs on
the converter extinguish), then re-insert the converter. If converter
fails to start, shuts down again, or load sharing imbalance persists;
replace the converter.
Converter addresses
contradictory.
Replace the converter.
Alarm Indicator
(Red) Flashing
Fan not operating (converter
shuts down).
Replace the converter.
3.2
Replacement Procedures
3.2.1
Converter Module Replacement
Converters can be inserted or removed with power applied (hot swappable).
NOTE!
Each converter locks into a module mounting shelf by means of a latch located on the bottom of the module. The
latch and converter handle are interactive. Pushing the handle up into the module’s front panel causes the latch to extend to
the locking position; pulling the handle down out from the module’s front panel causes the latch to retract. See Figure 2.3.
DANGER!
Take care when removing a converter that was in operation, as converter surfaces could be very hot.
WARNING!
To prevent damage to the latching mechanism, ensure the handle is in the open position when installing or
removing a converter. NEVER hold the handle in the closed position when installing a converter into a shelf.
Procedure
NOTE!
Refer to Figure 2.3 as this procedure is performed.
1.
Performing this procedure may activate external alarms. Do one of the following. If possible, disable these alarms. If these
alarms cannot be easily disabled, notify the appropriate personnel to disregard any alarms associated with this system while
this procedure is performed.
