In this case, I make sure that the air conditioner is alive, both Indoor and Outdoor, but it does not exert a cold at all. Problems like this are usually caused by dirty AC, and also freon pressure runs out (there may be leaks). Steps that my friend can do is. In the meantime, you can also visit www.airconservicingsingapore.com/ to get a fine and reliable air conditioner service.
Dirty AC Probably Probably Not in Service
Checks whether the air conditioner is dirty, both the indoor evaporator and the outdoor condenser, whether there is enough dust. So the cold cannot spread throughout the room. If it is dirty, preferably in the service/wash if my friend can do it yourself. If you can not, my friend can call a professional air conditioning technician or an AC serviceman your subscription buddy.
You can clean your own indoor filters at least once a week. By way of opening the top of the indoor cover, then take the air filter, then wash the cleaner can use detergent soap. If it is, dry and then reinstall it. For AC maintenance service at least 3 months for residential air conditioners, and 2 months for air-conditioning in the office