FAQ-NetEco generates an alarm for high temperatures inside the cold aisle of the data center. what should be done

Publication Date:  2014-10-29 Views:  155 Downloads:  0
Issue Description
NetEco generates an alarm for high temperatures inside the cold aisle of the data center. what should be done?
Solution
Possible Causes:
1) The precision air conditioner fails.
2) The air filter is blocked.
3) The external temperature and humidity sensor does not work properly.
4) The exhaust pressure of the compressor is high.
5) The suction pressure of the compressor is low.
6) Cold air is short-circuited.
7) The fan is faulty.

Procedure:

Step 1 Check whether the precision air conditioner works properly.

Check whether refrigeration status of the precision air conditioner is set correctly on the display panel of the precision air conditioner.

Y: If refrigeration status is set correctly, go to Step 2.
N: If the precision air conditioner is powered off or refrigeration status not set, set the refrigeration status correctly and check whether the fault persists after the precision air conditioner runs for about 30 minutes.
If the fault is rectified, troubleshooting is complete.
If the fault persists, go to Step 2.

Step 2 Check whether the air filter is blocked. Clean or replace the air filter based on the air filter maintenance instruction if the air filter is blocked.

After cleaning or replacing the air filter, check whether the fault persists.

Y: If the fault is rectified, troubleshooting is complete.
N: If the fault persists, go to Step 3.

Step 3 Check the operating status of the ambient temperature and humidity sensor.

Determine whether the ambient temperature and humidity sensor is faulty based on alarm information.

Y: If the ambient temperature and humidity sensor is faulty, replace it and check whether the fault persists.
If the fault is rectified, troubleshooting is complete.
If the fault persists, go to Step 4.
N: If the ambient temperature and humidity sensor is normal, go to Step 4.

Step 4 Check whether the exhaust pressure of the compressor is high.

Y: If the exhaust pressure of the compressor is high, perform the following operations:
Clean the condenser exterior if the condenser exterior is dirty, and check whether the fault persists.
If the fault is rectified, troubleshooting is complete.
If the fault persists, go to Step 4.2.
Check the operating status of the fan in the condenser. If the fan does not run properly, contact Huawei technical support.
N: If the exhaust pressure of the compressor is normal, go to Step 5.

Step 5 Check whether the exhaust pressure of the compressor is low.

Y: If the suction pressure of the compressor is low, contact Huawei technical support.
N: If the suction pressure of the compressor is normal, go to Step 6.

Step 6 Rectify the cold air short circuit.

Check whether the precision air conditioner is placed in the position shown in the design drawing.
Y: If the air conditioner is placed correctly, go to Step 6.2.
N: If the air conditioner is not placed correctly, place it according to the design drawing.
Check whether a blind plate is installed in the unused slot in the server cabinet.
Y: If the blind plate is installed, go to Step 7.
N: If the blind plate is not installed, install it.

Record the error code on the air conditioner UI and contact Huawei technical support to troubleshoot the fan.

END