The answer to 'my evaporator coil keeps shutting off' is that there are several common causes, including a refrigerant leak, a problem with the blower fan, or a malfunctioning thermostat. The evaporator coil may be shutting off due to overheating, which can happen if there is insufficient airflow over the coil.
If the evaporator coil keeps shutting off, you'll likely notice reduced cooling from your HVAC system, and the air may feel warm or humid. It's important to address the issue promptly, as a malfunctioning evaporator coil can lead to further system problems and increased energy costs.