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IMO the most likely culprit for an A/C tripping a properly sized breaker is a poor connection/corrosion at the breaker. The breaker gets hot and tricks the thermal trip mechanism into opening the breaker.


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The red wire that is currently on the C terminal, runs out to the coil on the contactor in your condensing unit (A/C). You'll notice the white wire from the same cable is on the Y terminal, which connects to the other coil terminal on the contactor. Technically you shouldn't put two wires under a single screw terminal, but it's done quite a bit with HVAC ...


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Although I commented above that it would be good to hire a qualified person, there are a few things a skilled DIY'er could do in this case. Make sure the main disconnect is off before doing anything. The most common causes for high head pressure are (a) dirty evaporator coils and (b) a poorly functioning condenser fan. From the photo it looks like that ...


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I am not a HVAC tech but I do believe that is a high pressure switch that is tripping and there could be a couple of things going on with your unit. It is tripping to protect the compressor and fan from faulting. I would suggest calling a HVAC company to come take a look.


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I will give you an off-label hypothetical answer for your hypothetical question TPE. Do with it what you will. Many medium efficiency systems have the evaporator coil placed downstream in the airflow after the gas furnace heat exchanger to insure that condensation from the AC does not form on the furnace heat exchanger, rusting it out. If you have a ...


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I know its a little late but I had a similar problem and my coils were stopped up with dirt. I cleaned my coils with coil cleaner and a tooth brush and rinsed with water. Make sure you brush with the grain on the coil so it doesn't get damaged. Then rinse with water. I repeated this process 3 times because it was so dirty. I used a pump up sprayer to rinse. ...



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