Alarm
Name
Alarm
ID
Alarm
Cause
ID
Repair Proposal
Bypass
mode
9E
1
•
Possible cause: The inverter is not started
Measure: Check whether other alarms are generated. If other
alarms are generated, handle these alarms according to the
handling methods.
•
Possible cause: The load exceeds the rated loading capacity
of the inverter.
Measure: If other alarms are not generated, manually start
the UPS.
•
Possible cause: The inverter is faulty.
Measure: Contact Huawei technical support.
Battery
mode
9F
1
•
Possible cause: The mains input is abnormal.
Measure: Check the mains input. If the mains input is
abnormal, wait for the mains to recover.
•
Possible cause: The battery self-check is in progress.
Measure: Check whether the battery self-check is in progress.
•
Possible cause: The mains loading capacity is insufficient.
Measure: Lower the load or replace the UPS with a UPS with
a larger capacity.
Battery
overvoltage
19
1
•
Possible cause: The battery voltage reaches the alarm
threshold due to continuous charge.
Measure: When batteries are in charge mode, wait for 2
minutes and check whether the alarm is cleared.
•
Possible cause: The number of batteries configured is less
than the actual number of batteries.
Measure: Check whether the number of batteries is correctly
set.
Battery
overvoltage
protection
20
1
•
Possible cause: The number of batteries configured is less
than the actual number of batteries.
Measure: Check that the configured number of batteries is
consistent with the actual number.
•
Possible cause: The actual number of batteries does not meet
requirements.
Measure: Check that the actual number of batteries meets
requirements.
•
Possible cause: The charger is abnormal.
Measure: Check that the charger voltage is normal when the
batteries are disconnected.
Battery low
voltage
1A
1
Possible cause: The mains is abnormal, and the batteries are
overdischarged.
Measure: Connect to the mains in non-battery test state.
Battery
maintenanc
e required
1D
1
•
Possible cause: The battery capacity is incorrectly configured.
Measure: Check that the configured battery capacity is
consistent with the actual battery capacity.
•
Possible cause: The battery loop cannot discharge currents
Measure: Check the battery cable connection and the status
of each battery.
•
Possible cause: The battery capacity is lower than normal.
Measure: Replace battery strings. If the alarm persists,
manually clear the alarm.
19
