The answer to 'why is my evaporator coil not turning on' is that there could be several common causes, such as a tripped circuit breaker, a faulty thermostat, or an issue with the evaporator coil itself. The evaporator coil is responsible for absorbing heat from the air in your home, so if it's not turning on, it means the air conditioning system is not functioning properly.
Some common symptoms of an evaporator coil not turning on include warm air blowing from the vents, the compressor not running, and the system not cooling your home effectively. Potential solutions include checking the circuit breaker, inspecting the thermostat, and cleaning or replacing the evaporator coil if necessary. However, it's important to note that working on HVAC systems can be dangerous, so it's generally best to call a professional HVAC technician to diagnose and repair the issue.