Module Alarm Name Alarm
Severity
Causes Suggestion
Power
Converter
Bypass Module
Protected
Minor Bypass module
protection,
input
overvoltage/
undervoltage
protection,
abnormal input
frequency, fast
input power
failure, or
bypass
overload
occurs.
1. For input overvoltage/
undervoltage protection: Check
whether the mains input
experiences overvoltage or
undervoltage using the mobile
phone app, management system,
or a multimeter.
● FusionSolar app (local
commissioning): Home >
Mains > Overview > AC
Voltage
● Management system:
Navigate to the device and
choose Mains > Details > AC
Voltage.
2. For abnormal input frequency:
Check whether the frequency
settings on the mobile app meet
the local requirements.
● FusionSolar app (local
commissioning): Home >
Mains > Overview > AC
Frequency
● Management system:
Navigate to the device and
choose Mains > Details > AC
Frequency.
3. For fast input power failure:
Check whether AC input is
present on the mobile app. If not,
supply the AC power and check
whether the alarm is cleared.
● FusionSolar app (local
commissioning): Home >
Mains > Overview > Mains
Status
● Management system:
Navigate to the device and
choose Mains > Details >
Mains Status.
4. For bypass overload: Check
whether the maximum AC load
power (for example, the transient
power when the air conditioner is
turned on) exceeds the threshold.
Run the system within the
iSitePower-M (MAP05A1, MAB05B1)
User Manual 12 System Maintenance
Issue 06 (2023-04-24) Copyright © Huawei Digital Power Technologies Co., Ltd. 186