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Dometic A/C Central Unit Not Cooling

Our unit did not cool our 30 ft fifth wheel last weekend. The unit has had freon added to it but the output is not sufficient to cool the rv. Any suggestions on things we can check?

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Freon is only on of many components that work together in the cooling process. Also, more freon does not mean more cool. There is a specific proper type and amount that each a/c system is designed to have. You could have anything from electrical problems causing the compressor to run inadequatly or not run at all. There could be a blockage in the device that controls the flow of freon into the evaperator coil. Keep in mind that I am a technician that repairs a/c's when I can get my hands on them; without specifics (ie: refrigerant type, pressures, temperatures, superheat and subcooling, details of how exactly the unit is or is not running, etc.) it is very difficult to try and diagnose problems based on the unit having freon added and it doesn't cool enough. I'm sorry. I mean no disrespect by my response and I understand that you may not understand all of the things that I am talking about, but it sounds like maybe your problem would be best resolved by a qualified technician who can see the unit in person. If you can provide me with some of the specifics listed above, please post them to this problem as comments and I will be happy to assist you to the best of my abilities doing so over the internet.

Thank You,
Chillmaster

Posted on Jul 06, 2008

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