Dears,

kindly, i have a problem for internal fan at VFD V20 not working when start the drive and after 30 minuit it make a fault F04  

See page 392 on this LINK B.2Spare parts-replacement fans  try to remove fan and check it or it's working, if broken replace it. Then motor running fan must work together. What about your electrical cabinet temperature? maybe fan working but your cabinet temperature too high? and it cause V20 fault? do you have ventiliation on your electrical cabinet? Do you keep mounting clearance? from top and bottom at least 100mm for cooling?

Also see what your F04 will cause:

ELHDAD55

Dears,

kindly, i have a problem for internal fan at VFD V20 not working when start the drive and after 30 minuit it make a fault F04

• What is  P0335[0] set to?
• What is the kW size of the drive?  /  Does the drive have a fan?

The internal fan should only start running when the motor is powered. A run command with a setpoint of 0 speed will cause problems.

Also see the drive manual on how to replace the fan. This instruction may be helpful to you to check if the fan is properly connected to the circuit.

How does your situation look like?

the have a ventelation at cabniat and i have 2 VFD working well at the same cabaint 

the VFD is new and itis the first time to working

P335 is set to 0

after i remove the fan i get one from two is burned and not working 

is it will effect  the VFD if i changed it with another or i will get another problem from the VFD when i change it