Reasons:

 

1. Exhaust fan break down

Solution:

there’s a common way to connect it to the power directly using the power cable of chiller, then check if exhaust fan can be turn on normally. See below.

  


2. Connect the fan inlet and outlet in opposite directions

 

Solution:

Please check if the exhaust fan install incorrectly.


3. Exhaust channel are blocked

Solution:

Clean them to make sure the the exhaust channel is in good condition.

 

End