I can hear a sound of running water or gurgling sound when I turn on or off my air conditioner.
I can hear a sound of running water or gurgling sound when I turn on or off my AC.
1. Refrigerant in the air conditioner circulates along the pipes in the outdoor and indoor units.
Sound of running water may be heard as refrigerant runs along pipes with different diameters.
2. When the mode is changed (e.g. On -> off) during use, noise may be found as while refrigerant travels
through pipes to reach its equilibrium.
How to fix
Noise occurs when refrigerant moves to reach its equilibrium and is a sign of normal operation.