Huawei FusionCol8000-E240 User Manual page 149

FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual
Table 8-4 Fan troubleshooting
Fault
Type
The fan
does not
rotate.
The fan
rotates
slowly.
Issue 02 (2021-04-15)
Possible Cause
Check whether the
power supply voltage
meets the
requirements.
Open phase occurs.
The voltage is less
than the lower
threshold or greater
than the upper
threshold.
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
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Solution
Check the power supply voltage.
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.
8 System Maintenance
140