Huawei NetCol8000-E220 User Manual page 130

NetCol8000-E220 Modular Indirect Evaporative Cooling
System
User Manual
Alarm Alarm
ID Severity
A026- WARNIN
01 G
A026- WARNIN
01 G
A027- WARNIN
01 G
A038- MAJOR
01
A038-
MAJOR
01
A042- CRITICA
01 L
A044- CRITICA
01 L
A046-
MAJOR
01
Issue 02 (2019-10-10)
Alarm
Probable Cause
Name
differential pressure switch is
blocked or disconnected.
5. The cables to the differential
pressure switch are loose or
damaged.
Return air The accumulated runtime of the air
filter exceed filter exceeds the alarm threshold.
runtime alarm
Outdoor The accumulated runtime of the air
intake air filter exceeds the alarm threshold.
filter exceed
runtime alarm
Power loss The power supply is cut off.
alarm
Compressor 1 1. The cables to the liquid pipe
Liquid pipe temperature sensor are loose or
temp sensor damaged.
fault
2. The liquid pipe temperature
sensor is faulty.
Compressor 2 1. The cables to the liquid pipe
Liquid pipe temperature sensor are loose or
temp sensor damaged.
fault
2. The liquid pipe temperature
sensor is faulty.
Remote 1. The remote shutdown dry contact
shutdown is triggered.
alarm
2. The cables to the remote
shutdown dry contact are loose or
damaged.
Smoke sensor 1. Smoke is generated in the
alarm equipment room.
2. The cables to the smoke sensor
are loose or damaged.
3. The smoke sensor is faulty.
Compressor 1
1. The refrigerant leaks.
antifreeze
2. The pressure displayed is
protection
different from the actual pressure.
alarm
3. The filter dryer is blocked.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Solution
4. Dredge or replace the
pressure tube.
5. Check the cables to the
differential pressure switch.
1. Maintain or replace the air
filter and clear the accumulated
runtime.
1. Maintain or replace the air
filter and clear the accumulated
runtime.
1. If power failure occurs on the
power system, no maintenance
is needed. If it occurs in other
places, check the power supply
cables.
1. Check the cables to the liquid
pipe temperature sensor.
2. Maintain or replace the liquid
pipe temperature sensor.
1. Check the cables to the liquid
pipe temperature sensor.
2. Maintain or replace the liquid
pipe temperature sensor.
1. Check the status of the remote
shutdown dry contact.
2. Check the cables to the
remote shutdown dry contact.
1. Expel smoke from the
equipment room and reset the
smoke sensor.
2. Check the cables to the smoke
sensor.
3. Maintain or replace the smoke
sensor.
1. Identify and repair the leaking
point, and refill refrigerant after
maintenance.
2. Calibrate or replace the
pressure sensor.
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