Huawei NetCol8000-E220 User Manual page 140

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Symptom
The running sound is
abnormal.
The compressor does not
work.
The compressor
discharge temperature is
too high.
The compressor
discharge pressure is too
low.
Issue 06 (2020-08-19)
Possible Cause
The motor specifications
do not meet the
requirements (voltage).
The motor is poorly
insulated.
The compressor, fan, or
pipes are loose.
The high pressure switch
is triggered.
The circuit breaker, fuse,
or cable is disconnected.
The compressor motor is
damaged.
The compressor does not
require starting.
The drive is faulty.
The refrigerant loop or
component is blocked.
Air enters the refrigerant
loop.
Heat dissipation is poor
because the condenser is
dirty or blocked.
The exhaust fan fails.
The refrigerant is
insufficient.
The exhaust fan speed
controller fails.
The refrigerant is
insufficient.
Refrigerant leaks.
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6 System Operation and Maintenance
Solution
Replace the motor.
Replace the motor.
Check and secure loose
parts.
Check the high pressure
switch.
Check the main circuit
breaker, compressor
circuit breaker, fuses, and
cables.
Check whether the
motor is damaged and
needs replacing.
Check for the
requirement status on
the LCD.
Replace the drive.
Clean foreign matters
from the refrigerant
loop.
Exhaust air and repair
the pipeline.
Clean the condenser fins.
Check whether the
exhaust fan works
properly.
Charge more refrigerant.
Replace the fan speed
controller.
Charge more refrigerant.
Check the pipeline for
leakage.
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