A fully functional AC that you can rely on during the sweltering summer is vital in your household. However, when your AC doesn't turn down, it creates an uncomfortable home atmosphere and increases utility expenses. Since the AC's components work cohesively to keep your home comfortable, a malfunctioning part can cause total dysfunction and leave you with a unit that won't shut down. Hire an AC repair service to examine and repair the issue whenever it arises. Below are some of the most likely reasons why your AC won't turn off.
Wrong Thermostat Setting
If your AC is working nonstop, the thermostat setting may be on, causing the fan assembly to run in the absence of cooling cycles. Additionally, a discrepancy between the thermostat setting and the room temperature will cause your AC not to work continuously to reach the desired cooling. You must consult an AC expert to modify the thermostat and set it to automatic when performing cooling and heating cycles. They will also direct you on balancing the thermostat to room temperature or slightly above it.
Dirty Condenser Coils
Evaporator coils allow hot air to pass through as the refrigerant works to remove it. However, debris and mold can build up on the coils, restraining them from extracting heat from the refrigerant. An obstruction to effective heat exchange will cause the AC to prolong cooling cycles when trying to cool your home. If your AC has dirty evaporator coils, call an AC repairer to clean debris build-up and maximize heating and cooling cycles.
Faulty Fan Limit Switch
A fan limit switch activates and deactivates the fan motor to prevent the AC from overheating. If the fan's limit switch sensor is dirty or has grime, it can detect incorrect temperatures and force the AC to operate without achieving the set temperature. Additionally, the switch may get locked in the override position, causing the fan to run continuously. If necessary, contact a repair service to reset your limit switch, clear the sensor, and replace it if faulty.
Dirty Air Filter
Dirt and debris accumulation on the filters may impede airflow into the AC. Clogged air filters result in limited airflow, causing AC to perform longer cycles to cool your home. A professional can clean the filters and replace them if they are at the end of service.
If your AC is running consistently without shutting down, you may incur high energy consumption, and your unit can sustain excessive wear and tear. You can hire an AC repair professional to diagnose your unit and address issues to keep your home cool as desired.