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The fan outside always runs even when it's shut off inside

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There is only a couple of things that can cause this. If the fan and compressor are on one contactor they should both be running and you probaly have a contactor that is stuck. If the fan is on a fan relay and the compressor is on a contactor you may have a stuck relay. On the panel is a wiring diagram, look for something called odf, this stands for outdoor fan. When you locate it try tapping on it with the back of a screw driver and see if fan shuts off.

Posted on May 17, 2011

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In your complaint you say that "the outdoor fan will stop running and compressor overheats and shuts off." If it happens 'exactly' that way then I'm betting your problem will be that the fan motor is defective as mentioned above, with an outside chance of the capacitor being defective, in which case if it isn't the capacitor - you will need a new fan motor. Note: outside fan motors are notorious for being fickle and it would not surprise me in the least to find a fairly new outside motor that is defective. I would check and see if you had any warranty on it.
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If it is happening that way, (the entire outside unit stops) then I would try 'washing the outside coil' really, really good and see if it will run ok afterwards.
Note: outside coils are sometimes difficult to get clean - sometimes requiring you to disassemble to some degree in order to make sure you get them clean.
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