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iSitePower-M V100R002C00
User Manual (MAP05A1, MAB05B1)
Alarm Name
Inverter
Module Fault
Issue 03 (2022-10-28)
Alarm
Severi
ty
Major
Copyright © Huawei Digital Power Technologies Co., Ltd.
Causes
Alarm
Locating
Inverter
1. Overvoltage
module
or
fault,
undervoltage
overvoltage
fault: Check
/
whether the
undervoltag
PV input
e fault,
voltage is
output
within the
short circuit
specified range
lockout,
on the mobile
overload
phone app. If
timeout
not, adjust the
lockout,
input voltage.
output relay
2. Output
fault, INV
short-circuit
self-check
lockout: Check
exception,
whether the
internal
load or output
overtemper
cable is short-
ature and
circuited.
lockout,
Rectify the
output
fault and clear
open circuit,
the alarm on
inverter
the mobile
zero
phone app.
crossing
3. Lockout due
loss, RCD
to overload
detection
timeout: Check
circuit fault,
whether the
RCD
output load
leakage
exceeds the
current
specifications
fault.
and whether
the product
runs with
overload for a
long time.
Clear the
alarm on the
mobile phone
app, and
ensure that
the load is
within the
range in the
specifications.
4. Internal
overtemperatu
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.
143
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