IPM module
temperature too high
protection
1. Output exception of IPM module
thermal circuit
2.
Motor is abnormal or damaged
3. Fan blade is broken
1. Change a driver board
2. Check if the fan motor speed is
too low or fan motor damaged,
change it
3. Change the fan blade
1.
Output exception of PFC module
2.
Motor is abnormal or damaged
3. Fan blade is broken
4. Input voltage leap, input power is
abnormal
1.
Change a driver board
2.
Check if the motor speed is too
low or fan motor damaged,
change it
3.
Change the fan blade
4. Check the input voltage
1.
DC motor is damaged
2.
Main board is damaged
3. The fan blade is stuck
1.
Detect DC motor, replace with a
new one
2. Change a new main board
3. Find out the barrier and work it
out
PFC module thermal
circuit is abnormal
The driver board is damaged
1. Change a new driver board
2. Check if the fan motor speed is
too low or fan motor damaged,
change it
PFC module high
temperature
protection
1. PFC module thermal circuit output
abnormal
2.
Motor is abnormal or damaged
3. Fan blade is broken
4. The screw in the driver board is not
tight
1. Change a new driver board
2. Check if the motor speed is too
low or fan motor damaged,
change it
3. Change the fan blade
4. Check if the screw is loose
The supply voltage fluctuates too much
Check whether the voltage is
stable