Troubleshooting; Parts Replacement; Replacing An Spd Module - Huawei PDU8000 User Manual

PDU8000 Modular Precision PDC
User Manual (FusionModule2000 V2.0)

8.4 Troubleshooting

Symptom
The LCD fails to
display branch
currents.
The LCD fails to
display the circuit
breaker status.
The LCD is black
or blinks.
The indicators of
the monitoring
board module do
not light up.

8.5 Parts Replacement

This document describes only the replacement method for certain components. If a faulty
component to be replaced is not covered in this document, contact Huawei technical support.

8.5.1 Replacing an SPD Module

Prerequisites
Issue 02 (2017-02-24)
Possible Cause
 The monitoring board communications
cable or the secondary cable to the
corresponding branch current
transformer is not properly connected.
 The current detection module or current
transformer is faulty.
 The communications cable of the
Boolean value collection module or the
corresponding branch Boolean value
signal cable is not properly connected.

The Boolean value collection module or
auxiliary switch contact is faulty.
 The input N wire is disconnected.
 The LCD is faulty.
 Cables are not properly connected.
 The monitoring board is faulty.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance Guide
Solution
1. Replace the
monitoring board by
referring to 8.5.5
Replacing the
Monitoring Board.
2. Contact Huawei
technical support.
1. Replace the
monitoring board by
referring to 8.5.5
Replacing the
Monitoring Board.
2. Contact Huawei
technical support.
 Secure the input N
wire.
 Replace the LCD by
referring to 8.5.6
Replacing an MDU.
1. Replace the
monitoring board by
referring to 8.5.5
Replacing the
Monitoring Board.
2. Contact Huawei
technical support.
131