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FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual
Fault
Type
The fan
rotates
slowly.
The
airflow
volume is
insufficien
t.
Issue 03 (2021-04-20)
Possible Cause
A short circuit exists
between the fan and
the ground.
The coil is short-
circuited or the
motor is burnt.
The overtemperature
protection function
of the motor is
triggered (the motor
is overheated).
The fan blade is
blocked or dirty.
The airflow direction
is incorrect (the
direction of the
motor is opposite to
that of the high-
speed airflow).
Fan blade friction/
collision
The active
temperature
management
function is enabled
(when the motor or
electronic system is
overheated).
The fan rotates
slowly.
The air channel is
blocked.
Copyright © Huawei Digital Power Technologies Co., Ltd.
Solution
Check the power cable and voltage of the
motor.
Replace the fan. If there is a beam for
hoisting the fan in the air exhaust section,
before removing the fan, use a hook to
secure the fan to the beam to prevent the
fan from falling.
Check whether the air circulation is normal.
Clear foreign matters if necessary.
The fan blade is blocked or dirty.
Check the ambient temperature of the fan.
Check the voltage.
Power off the motor and prevent it from
being connected again.
● Check whether the motor is powered off.
● Clear foreign matters or contaminants.
Check the airflow direction (rotation caused
by airflow reversal).
Clear foreign matters or dirt in the fan if
necessary.
Check whether the air circulation is normal.
Clear foreign matters if necessary.
The fan blade is blocked or polluted.
Check the ambient temperature of the fan.
Check the installation space (air speed
above the heat source).
Check whether the fan rotates slowly.
Check whether the airflow is smooth
(intake/exhaust air damper and air filter).
The fan blade is blocked or polluted.
10 Troubleshooting
145
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