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I'm sorry, but I'm a little confused on how specifically I can help you; can you clarify whether you're just seeking an educated guess on what could be wrong, or are you looking for technical guidance on how to fix the issue yourself – if the latter, must have tools and basic mechanical skills?
My educated guess would be a faulty A/C pressure transducer (or "triple switch"). It controls compressor and condenser fan operation based on refrigerant line pressure, regardless of engine temperature.