High Amb. Temp; Low Amb. Temp; High Amb. Humi - Huawei ETP48400-C9A2 User Manual

ETP48400-C9A2 Embedded Power
User Manual
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7.2.10 High Amb. Temp.

Possible Causes
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Measures
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7.2.11 Low Amb. Temp.

Possible Causes
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Measures
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7.2.12 High Amb. Humi.

Issue 05 (2020-04-07)
Manually switch on or switch off the battery contactor and check whether the battery
current changes accordingly. If not, replace the contactor.
This alarm is generated only for the power system that has an ambient temperature sensor installed.
The high ambient temperature alarm threshold is incorrectly set.
The temperature control system is faulty in the cabinet where the ambient temperature
sensor is located.
The ambient temperature sensor is faulty.
Check whether the high ambient temperature alarm threshold (50° C by default) is
correctly set. If no, adjust it to a proper value.
Check whether the temperature control system in the cabinet is faulty. If yes, rectify the
fault. The alarm is cleared when the cabinet temperature falls within the allowed range.
Check whether the ambient temperature sensor is faulty. If yes, replace the temperature
sensor.
This alarm is generated only for the power system that has an ambient temperature sensor installed.
The low ambient temperature alarm threshold is incorrectly set.
The temperature control system is faulty in the cabinet where the ambient temperature
sensor is located.
The ambient temperature sensor is faulty.
Check whether the low ambient temperature alarm threshold (0° C by default) is correctly
set. If no, adjust it to a proper value.
Check whether the temperature control system in the cabinet is faulty. If yes, rectify the
fault. The alarm is cleared when the cabinet temperature falls within the allowed range.
Check whether the ambient temperature sensor is faulty. If yes, replace the ambient
temperature sensor.
This alarm is generated only for the power system that has a humidity sensor installed.
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