An air conditioner cycling between cold and warm air is typically experiencing short-cycling caused by a tripping safety switch, an oversized unit, or an overheating compressor. When a safety mechanism like a condensate float switch or thermal overload relay repeatedly trips, it shuts the system down mid-cycle, stopping the cooling process. Once the component cools down or drains slightly, the system restarts and blows cold air again until it overheats or faults out once more. Verification: Monitor the outdoor unit and indoor thermostat to see if the system turns off abruptly and frequently.
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