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iSitePower-M V100R002C00
User Manual (MAP05A1, MAB05B1)
Alarm Name
PV Module
Fault
Issue 03 (2022-10-28)
Alarm
Severi
ty
Major
Copyright © Huawei Digital Power Technologies Co., Ltd.
Causes
Alarm
Locating
PV module
1. Relay fault:
fault, relay
The relay is
fault, PV
damaged, the
self-check
power supply
error,
to the relay is
insulation
abnormal, or
error, AFCI
the relay
fault.
control signal
is abnormal.
Power off and
then power on
the system
(disconnect
the input and
loads, and
black start the
battery).
Check whether
the alarm is
cleared.
2. If the PV
self-check is
abnormal,
disconnect the
PV input and
reconnect it.
Check whether
the alarm is
cleared.
3. Insulation
fault: Check
whether PV
modules, DC
cables, and
connectors are
damaged,
whether the
insulation
layer
deteriorates,
and whether
the ambient
humidity is
high.
10 System Maintenance
Suggestion
1. Check whether the
alarm is cleared. If yes,
no further action is
required. If no, go to
the next step.
2. Power off and then
power on the system,
and check whether the
alarm is cleared. If yes,
no further action is
required. If no, go to
the next step.
3. Contact Huawei
technical support to
check the module.
138
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