Huawei FusionModule1000A20 Maintenance Manual page 77

FusionModule1000A20 Prefabricated All-in-One
Data Center
Maintenance Guide
Symptom Alarm
The InFan.Fault
intelligent
heat
exchanger is
powered on
but has no
cooling
output.
OutFan.Faul
t
Comp.Fault
● VAC.Und
er
● VAC.Over
● NoPower
Issue 03 (2022-12-15)
Possible
Cause
The
intelligent
heat
exchanger
has no
cooling
output
because the
internal fan
is faulty.
The
intelligent
heat
exchanger
has no
cooling
output
because the
external fan
is faulty.
The
intelligent
heat
exchanger
has no
cooling
output
because the
compressor
is faulty.
The
intelligent
heat
exchanger
has no
cooling
output
because the
AC power
supply is
abnormal.
Copyright © Huawei Digital Power Technologies Co., Ltd.
5 Common Faults and Troubleshooting Measures
Solution
● The power terminal of the internal fan is loose:
Measure: Check the power cable to the internal
fan and reconnect the cable.
● The internal fan is faulty:
Measure: Replace the equipment with a new one.
● The power terminal of the external fan is loose:
Measure: Check the power cable to the external
fan and reconnect the cable.
● The external fan is faulty:
Measure: Replace the equipment with a new one.
Replace the equipment with a new one.
1. Check whether the power supply is correctly
connected.
2. Choose System Status > Environment Status,
and check the supplied DC and AC voltages.
3. Use a multimeter to measure the upstream
power supply voltage of the intelligent heat
exchanger. If the measured voltage exceeds the
threshold, the power grid voltage is abnormal.
4. Check whether the corresponding circuit breaker
in the upstream PDF has tripped. If not, check
whether the PDF works properly.
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