Huawei R100020G1 User Manual page 40

R100020G1 Charging Module
User Manual
Error Code
E07
E08
E09
Issue 05 (2021-11-16)
Symptom
Current sharing
alarm
CAN
communication
failure
Poor connection
Copyright © Huawei Digital Power Technologies Co., Ltd.
Measure
1. Check whether the preset voltages of
different charging modules are the same.
If not, rectify the fault.
2. Check whether the output cables and
output circuit breakers of the charging
module are properly connected. If not,
rectify the fault.
3. Exchange the slot of the faulty module
with that of a normal module. If the fault
occurs only in the original slot, the slot is
abnormal and needs to be handled.
4. Exchange the slot of the faulty module
with that of a normal module. If the fault
occurs again after the slot exchange,
replace the faulty module or contact the
technical support.
1. Check whether the CAN communications
cable and build-out resistor are correctly
connected. If not, rectify the fault.
2. Exchange the slot of the faulty module
with that of a normal module. If the fault
occurs only in the original slot, the slot is
abnormal and needs to be handled.
3. Exchange the slot of the faulty module
with that of a normal module. If the fault
occurs again after the slot exchange,
replace the faulty module or contact the
technical support.
1. Check whether the charging module is
properly connected. If not, rectify the
fault.
2. Check whether pin 9 and pin 10 of the
output terminal are short-circuited. If not,
short-circuit them.
3. Exchange the slot of the faulty module
with that of a normal module. If the fault
occurs only in the original slot, the slot is
abnormal and needs to be handled.
4. Exchange the slot of the faulty module
with that of a normal module. If the fault
occurs again after the slot exchange,
replace the faulty module or contact the
technical support.
6 Maintenance
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