Symptom
Possible Cause
Measure
Communication with the
main control module is
interrupted.
2. If the fault persists,
replace the ECC800-
Pro subrack.
The ALM indicator (red)
is steady on.
Output overvoltage
protection is triggered.
If the PSU is locked out,
disconnect the AC input
from the PSU, and then
power on the PSU again
after the indicator turns
off. If the fault persists,
replace the PSU.
There is no output due
to a PSU fault.
Replace the faulty PSU.
Table 7-4 Common faults and troubleshooting for the main control module
Symptom
Possible Cause
Measure
The RUN indicator (green)
is off.
There is no AC input.
If the green indicators on
PSUs are steady on, the
power input to the
system is normal.
Otherwise, rectify power
grid faults.
The main control
module is faulty or not
securely installed.
Reinstall the main
control module. If the
fault persists, replace the
main control module.
The RUN indicator (green)
is blinking at 5 Hz.
The main control
module does not
register with the
NetEco.
Register the main control
module with the NetEco.
RJ45 power output
indicators turn off
(involved ports: AIDI_1 -
AIDI_5, COM1-COM4, and
DO).
The corresponding
power ports have no
output.
Energize corresponding
power ports over the
WebUI or NMS.
The corresponding
power ports are short-
circuited.
Check whether the
connected load is short-
circuited. If yes, eliminate
the short circuit.
The ALM indicator (red) is
steady on.
An alarm is generated. View active alarms on
the WebUI and clear
them one by one.
ECC800 Data Center Controller
User Manual (for ECC800-Pro)
7 Maintenance
Issue 02 (2020-09-07)
Copyright © Huawei Technologies Co., Ltd.
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