Rect Comm Fault; Identifying Faults; Identifying Rectifier Faults - Huawei ETP4830-A1 User Manual

ETP4830-A1 Embedded Power
User Manual

7.2.21 Rect Comm Fault

Possible Causes



Measures
1.
2.
3.

7.3 Identifying Faults

7.3.1 Identifying Rectifier Faults

Table 7-2 Identifying rectifier faults
Symptom
The Run indicator (green)
is off.
The Run indicator (green)
is blinking (0.5 Hz).
The Run indicator (green)
is blinking (4 Hz).
The Alarm indicator
(yellow) is steady on.
Issue 10 (2017-08-08)
A rectifier has been removed.
Rectifier connections are loose.
A rectifier is faulty.
Check whether a rectifier has been removed. If so, reinstall it.
If the rectifier is in position, remove the rectifier and reinstall it.
If the alarm persists, replace the rectifier.
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Possible Cause
There is no AC input, or
the rectifier is faulty.
The rectifier is being
queried manually.
Software is being loaded.
 The rectifier is
protecting itself against
overtemperature.

The rectifier is
protecting itself against
AC input overvoltage or
undervoltage.

The rectifier is faulty.
7 Maintenance
Corrective Measures
Check whether the AC input
is normal. If the AC input is
normal, replace the rectifier.
If the AC input is normal and
the green indicators on all
rectifiers are off, replace the
AC/DC power distribution
subrack.
Exit the query status. The Run
indicator becomes steady on
again.
After software finishes
loading, the indicator will
stop blinking, without any
user action required.
 If the ambient temperature
is higher than the upper
threshold, lower the
ambient temperature.

If the air intake or exhaust
vent is blocked, remove
the blockage.

If the AC input is
abnormal, ask
maintenance personnel for
the mains supply to rectify
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