Huawei iSitePower-M MAP05A1 - Page 197

Module Alarm Name Alarm
Severity
Causes Suggestion
Power
Converter
Inverter
Module Fault
Major Inverter
module fault,
overvoltage/
undervoltage
fault, output
short circuit
lockout,
lockout due to
overload
exceeding the
time limit,
output relay
fault, INV self-
check fault,
internal
overtemperatur
e and lockout,
output open
circuit, inverter
zero-crossing
signal loss, RCD
detection
circuit fault, or
RCD leakage
current fault
occurs.
1. Check whether the system works
in bypass mode and the load
power is within the allowed
range. If yes, check other
troubleshooting suggestions.
2. For undervoltage: Check whether
the PV input voltage is within the
normal MPPT voltage range on
the mobile app or management
system. If not, adjust the input
power.
● FusionSolar app (local
commissioning): Home >
Sampling Equipment >
Power Converter > PV Input
Voltage(V)
● Management system:
Navigate to the device and
choose Power Converter >
Details > PV Input Voltage.
3. For output short-circuit lockout:
Check whether the load or output
cable is short-circuited. If yes,
rectify the fault and clear the
alarm on the mobile app.
4. For lockout due to overload
exceeding the time limit: Check
whether the AC output has been
overloaded for an extended
period of time. If yes, reduce the
load power to the allowed range,
let the system run for a period of
time, and check whether the
alarm is cleared.
● FusionSolar app (local
commissioning): Home >
Digital Power > Device > AC
Output Distribution > Active
Power
● Management system:
Navigate to the device and
choose AC Output
Distribution > Details >
Active Power.
5. For internal overtemperature: If
the internal temperature exceeds
the protection threshold, check
iSitePower-M (MAP05A1, MAB05B1)
User Manual 12 System Maintenance
Issue 06 (2023-04-24) Copyright © Huawei Digital Power Technologies Co., Ltd. 188