Condenser fan starts and then shuts down immediately


  #1  
Old 12-31-18, 09:25 AM
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Unhappy Condenser fan starts and then shuts down immediately

I am trying to replace my fan motor, and after putting new motor in, I found that it will start to spin. But then stop after 1-2 seconds. I replaced the fan with what I believe is like for like, but it is not working. After looking at the motor, it shows 7.5 mfd, and my capacitor is a 40/5. I am thinking this could be the issue, but the old motor is also 7.5 mfd, and after putting it back in, it is still limping along. The new motor has 4 wires and old has 3. From my research, I was under the impression that just leaving the brown/white wire disconnected (taped up) was correct.. Before buying a new capacitor, I just wanted to see if anyone might be able to help. I believe the issue is the capacitor, or the wiring but not sure which. Any help would be appreciated.
 
  #2  
Old 12-31-18, 09:34 AM
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Welcome to the forums.

The new motor has 4 wires and old has 3.
That certainly isn't like for like.

Did the new motor come with instructions for using three wires ?
You will need to change the cap too.
 
 

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