Usually, as your cabin heats up, the temperature control starts to read the elevated temperature and consequently signals your HVAC system to turn on and cool down your home. If your cooling system stops running before your cabin has attained the set temperature, this indicates a problem referred to as short-cycling that various factors can cause. These factors include dirty or clogged air filters, causing airflow restrictions throughout the a/c system, leading to overheating and ultimately the premature end of a cycle, and frozen evaporator coils may also lead to short cycling. This may occur if you run the cooling system while the outdoor HVAC component has frozen. Please turn off your system and let it thaw completely before turning it on. If your space is too small for your conditioner, the conditioner will put out excessive cool air and lead to short cycling, but replacing your oversized system with a single that suits your cabin better should resolve this issue. When a refrigerant leaks, refrigerant levels run low and force your cooling system to work harder to cool your home. This will eventually lead to malfunctioning. Problems with the electrical system of your A/C will also result in short cycling. To maintain your short cycling problem, you may need to detach and substitute your air filter with a single that your HVAC provider recommends before turning your system back on. Next, check out your evaporator coils for any ice present and shut off your system until your coils defrost completely. Replace your component with an appropriately sized one and refill your refrigerant, then you may also need to maintain or substitute the electrical parts inside your central HVAC The simplest and ultimate thing you can do to prevent short-cycling is regular maintenance.