Troubleshooting - Huawei UPS5000-A-30 kVA User Manual

UPS5000-A-30 kVA & 40 kVA & 80 kVA
User Manual

If the UPS is faulty, alarm information is displayed on the LCD. Clear critical alarms
before powering on the UPS again. Otherwise, the fault scope expands or the UPS is
damaged.

Do not clear alarms by reseating power units or the bypass unit.

Remove a faulty power unit or bypass unit after it is confirmed that the unit needs
replacing. After removing the unit, do not insert it into the UPS again.
 After a UPS finishes troubleshooting and is started, if the LCD continues displaying alarm
information, choose System Info > Alarms > Clear Faults to clear the alarm and then
start the inverter.

When batteries reach EOD, the battery switch in the BCB box trips if the BCB box is
configured. To restore battery discharge, close the battery switch in the BCB box (if any)
first.

To restore battery discharge after batteries reach EOD, use one of the following methods: 1.
Switch to another battery string. Ensure that each battery has a voltage greater than the
EOD voltage and 11.3 V/cell. 2. Restore the mains power supply to start the inverter.
Close the battery switch and charge batteries until each battery has a voltage greater than
the EOD voltage and 11.3 V/cell.
For details about how to rectify common faults, see
occur, see the alarm list chapter, or contact Huawei technical support.
Table 7-1 Solutions to common faults
Case
Issue 11 (2018-12-10)
Symptom
Copyright © Huawei Technologies Co., Ltd.
7

Troubleshooting

Table 7-1. If any unmentioned faults
Possible Cause
7 Troubleshooting
Measure
175