I can hear a sound of running water or gurgling sound when I turn on or off my air conditioner.
Symptom
A running water or gurgling sound can be heard when the unit is first turned on or off.
Cause
1. Refrigerant contained within the air conditioner circulates arounded the sealed system.
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How to fix
Noise occurs when refrigerant moves to reach its equilibrium and is a sign of normal operation.