Huawei ECC800 User Manual page 199

ECC800 Data Center Controller
User Manual
Symptom
The ALM indicator (red) is
steady on.
Table 8-4 Common faults and troubleshooting for the main control module
Symptom
The RUN indicator (green)
is off.
The RUN indicator (green)
is blinking at 4 Hz.
RJ45 power output
indicators turn off (involved
ports: AI/DI1-AI/DI6,
COM1-COM4, and
DO1-DO2).
The ALM indicator (red) is
steady on.
Table 8-5 Common faults and troubleshooting for the independent deployment AI_DI unit
Symptom
Issue 02 (2019-02-28)
Possible Cause
Output overvoltage
protection is triggered.
There is no output due to a
PSU fault.
Possible Cause
There is no AC input.
The main control module is
faulty or not securely
installed.
The main control module
does not register with the
NetEco.
The corresponding power
ports have no output.
The corresponding power
ports are short-circuited.
An alarm is generated.
Possible Cause
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8 Maintenance
Measure
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.
Replace the faulty PSU.
Measure
If the green indicators on
PSUs are steady on, the
power input to the system is
normal. Otherwise, rectify
power grid faults.
Reinstall the main control
module. If the fault persists,
replace the main control
module.
Register the main control
module with the NetEco.
Energize corresponding
power ports over the WebUI
or NMS.
Check whether the
connected load is
short-circuited. If yes,
eliminate the short circuit.
View active alarms on the
WebUI and clear them one
by one.
Measure
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