Huawei FusionModule5000 Maintenance Manual page 25

FusionModule2000 Smart Modular Data Center
Maintenance Guide
Procedure
Step 1 Check whether the air filter is dirty and blocked. If the air filter is dirty or blocked, clean or
replace it. Check whether the fault is rectified after you clean or replace the air filter.


Step 2 Check whether the condensing pressure is abnormal. Check whether the unit pressure
parameter settings are correct and whether there is an alarm related to the condensing
pressure.


Step 3 Check whether the condenser exterior is dirty. Remove any dirt and check whether the fault
persists.


Step 4 Check whether the amount of refrigerant is proper.


Step 5 Check whether cold air returns without passing through devices. Measure the temperatures at
the air intake vent and air discharge vent of the air conditioner.


Step 6 Check the reason why cold air returns without passing through devices.
1.
2.
Step 7 Obtain the error code displayed on the user interface (UI) of the air conditioner, and contact
Huawei technical support.
----End
Issue 01 (2016-10-18)
If the fault is rectified, no further action is required.
If the fault persists, go to
If the condensing pressure is abnormal, go to
If the condensing pressure is normal, go to
If the fault is rectified, no further action is required.
If the fault persists, check the operating status of the condenser fan.
− If the fan fails to run properly, contact Huawei technical support.
− If the fan runs properly, go to
Only professional personnel are allowed to determine whether the amount of refrigerant is proper.
If yes, go to Step 5.
If no, contact Huawei technical support.
If the temperature difference is low, go to
If the temperature difference is high, go to
Check whether the air conditioner is correctly placed in the position shown in the design
drawing.
− If yes, go to Step 6.2.
− If no, adjust its position based on the design drawing. Check whether the fault
persists. If the fault persists, contact Huawei technical support.
Check whether filler panels are installed in any unused slots in the IT cabinet.
− If yes, go to Step 7.
− If no, install filler panels. If the fault persists after filler panels are installed, contact
Huawei technical support.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Step 2.
Step
Step 4.
Step 4.
Step 6.
Step 7.
4 Troubleshooting
3.
19