Rheem A/C not cooling

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Old 05-20-17, 12:42 PM
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Rheem A/C not cooling

Hello, I have a Rheem 2ton Central AC unit that is only 2 yrs. old. I live in Central Florida and we have been breaking heat records already and it isn't even summer yet. My problem is the unit justs doesn't want to stop running. The air coming out of the vents is not very cold. We set it at 78 in the morning and after about noon it just keeps running and doesn't cycle on and off like it should. The parts are still under warranty, but the labor will cost me, and I will not call the original installer because he was a jerk to say the least. I will probably have to call someone else because in my opinion there must be something either leaking Freon or a bad part. Any ideas will help, I have already gone out and cleaned the outside unit with the hose, so it is clean. I just don't think that Freon should be gone already unless there is a bad part.

Thanks for any advice, Fritoguy15
 
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Old 05-20-17, 12:44 PM
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Does the outside condensor shut down or does it run continuously ?
How is the air flow..... strong - weak ?

Has the filter been changed ?
 
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Old 05-20-17, 12:56 PM
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It runs continuously, the air flow is good. It is stronger near the actual air handler in the attic, but all our ductwork is fine. I keep the air filter changed every month or 2 at the most and don't use see through air filters, just some good perforated ones.
 
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Old 05-20-17, 01:41 PM
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If you had reduced flow you could have an iced coil in the air handler but good airflow rules that out. Your A/C system is protected by a low refrigerant pressure switch so if the system got too low it would shut down.

You said "record heat"..... if the system had performed better previously at the same temps then you could be slightly low on charge. There could be a tiny leak in the system.
 
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Old 05-20-17, 01:56 PM
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If the system is low on charge as it is so new would that not indicate that something was wrong with the system itself?
 
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Old 05-20-17, 03:22 PM
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A low charge would indicate a possible leak. Not usually an equipment problem but an install issue. Could be a soldered connection with a pinhole leak. Could be a leaking service valve or fitting.
 
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Old 05-20-17, 04:27 PM
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Ok I'll have a tech come out next week and check it out. Thanks for your help.
 
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Old 07-22-18, 02:08 PM
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back again with the same problem, AC won't stop running. We had a tech out in May this year who put in 2 lbs. of Freon just like last year. he went up top in the attic to look for a leak but his detector never went off. His explanation was that it was probably so small that he couldn't find it. He suggested using a dye in the system; which I had never heard of, but he said sometimes it will find the leak, and sometimes not. He thinks it is in the coils in the air handler. My question is about the dye and if it is worth it or is he just trying to get more $$ out of me. We obviously have a leak somewhere, and I don't see why he couldn't find it. Talking to Rheem they said if the coils were bad they would replace the parts but not the labor, which the tech said could run $900. What is right here and what isn't?

Fritoguy15
 
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Old 07-22-18, 03:54 PM
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A good refrigerant sniffer should be able to find that large a leak. Dye is typically used in auto systems for diagnosis. Two pounds is a lot of refrigerant. If it turns out to be a leaking evaporator coil.... the manufacturer only replaces the coil.... not the labor.
 
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Old 07-23-18, 08:15 AM
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thanks for the information, I don't think I'll trust that person again.
 
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