Strange noises from your AC, whether it’s a ductless mini-split or portable unit, can indicate issues like loose parts, debris, or electrical problems. It’s important to check for any visible obstructions and tighten loose components. Make sure the power breaker to the unit is off and locked out before working on the unit yourself. If the unusual sounds persist, turn off the unit and contact a technician to diagnose the problem and prevent further damage.
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