Huawei MERC-1100W-P User Manual

Alarm Name Cause Suggestions
Overtemperatu
re
The optimizer
internal
temperature is
too high.
1. Check the ventilation and ambient
temperature at the optimizer installation
position. If the ventilation is poor or the
ambient temperature exceeds the upper
threshold, improve the ventilation and
heat dissipation.
2. If the ventilation and ambient
temperature are normal, contact your
installer.
Internal
hardware fault
An internal fault
occurred in an
optimizer.
Contact your installer.
Output
terminal
overtemperatu
re
The output
terminal
temperature of
some optimizers
is abnormal.
Contact your installer to replace the faulty
optimizer and the optimizer connected to
the short output cables of the faulty
optimizer.
Output
backfeed
Optimizer
output backfeed
occurred.
1. Check whether PV modules are shaded
when PV strings are connected in
parallel.
2. If the fault persists, contact your
installer.
MERC Smart PV Optimizer
User Manual 3 System Maintenance
Issue 02 (2022-09-20) Copyright © Huawei Digital Power Technologies Co., Ltd. 13

Huawei MERC-1100W-P Specifications

General

Brand	Huawei
Model	MERC-1100W-P
Category	Inverter
Language	English