TP48200A-D17B3
Troubleshooting Guide
4 Troubleshooting
Issue 03 (2013-05-06)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
25
The contactor is faulty.
The battery is faulty.
Solution
Step 1
Check cables or connectors of the battery route. Replace faulty cables or connectors.
Step 2
Check the contactor, for example, whether it can be opened and closed. Replace the faulty
contactor.
Step 3
Check batteries. Replace faulty batteries.
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4.3.9 Ambient Overtemperature or Undertemperature
Possible Causes
PMU temperature alarm parameters are not set properly.
The temperature in the cabinet is excessively high or low.
The temperature sensor is faulty.
Solution
Step 1
Check that PMU temperature alarm thresholds are set properly.
Step 2
Check the temperature control system in the cabinet.
Repair the faulty temperature control system. The alarm is automatically cleared when the
temperature in the cabinet is within the specified range.
Step 3
If the alarm persists, check the temperature sensor.
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4.3.10 Battery Temperature Sensor Failure
Possible Causes
The battery temperature sensor is not installed properly.
The battery temperature sensor is faulty.
The signal transfer board is faulty.
Solution
Step 1
Check that the sensor signal cable is properly connected to the signal transfer board. Replace
the faulty signal cable.
Step 2
If the alarm persists, replace the battery temperature sensor.
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