Common causes for a malfunctioning air conditioner are dirty air filters and coils, a faulty thermostat sensor and even damaged fan blades. Some of these things are easy to repair, but many problems should be handled by a professional technician.
One of the main reasons why an air conditioner fails is that it isn't being maintained regularly. Hire a technician once a year to clean the coils and inspect the system to identify problems before they occur. Not maintaining a system on an annual basis voids the warranty for most units.
A frozen coil causes a great deal of air conditioner failure. These coils get frozen when the duct work is blocked or the air filter is dirty. Check if the coil is frozen by seeing if any frost has accumulated on it. A filter can be easily replaced, but more complex issues, such as duct blockage, should be handled by a technician.
An air conditioning unit has several components that can lead to sudden failure. All of these components require different methods and tools for repair. It is vital to call a professional to find the exact cause of the problem, especially with air conditioning units that are digitally and technologically advanced