To conquer these issues they should be checked usually, simply remember that if you are regularly running the Air-conditioner it needs to be maintained routinely for more efficiency. The common problems we face in Air-conditioner are. Jammed filters, Air-conditioner vibrating, Air-conditioner making a sound, Air-conditioner not blowing cool air, Air-conditioner thermostat problem, Air-conditioner not turning on, low gas in Air-conditioner. These are some common problems in Air-conditioner.