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Category: HVAC
Satisfied Customers: 14622
Experience:  15yrs in the HVAC industry with certificates and degrees.
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I had sent you a question earlier today regarding the

Customer Question

I had sent you a question earlier today regarding the exchange of similar fan motors on a Nordyne 5 ton HVAC system. We exchanged the fan motors, turned on the system and it ran smoothly for a few minutes. After a few minutes, it started to make a loud noise again and eventually the fan quit working. I do have pressure gauges and when I hooked up the cold line to the compressor, it read100 psi. If the compressor is broken, would it still show a high PSI? Or do I need a new fan motor?
Submitted: 11 months ago.
Category: HVAC
Expert:  HVAC Guru replied 11 months ago.

Hello and thanks for using this service! If you are a JA Member I would like to personally thank you and welcome you back! I am HVAC Guru an extremely experienced tech on the site and I try to get to as many customers as I can. NOTE it takes time for me to type research and add links so please wait for me to respond back I can only do this so fast. Secondly, I do not know your skill level so please try and let me know if I am going beyond your knowledge or comfort zone thanks! I strive for a 5 star rating from everyone especially our JA members.


Is the compressor or fan motor making the noise? You may have a bad compressor on the unit making the noise, you may want to disconnect the fan and start it up and run it for a couple minutes to see if it is the compressor making the noise. If it is you will likely need a new compressor.

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