Frigidaire Air Conditioner Error Code F2

F2 on a Frigidaire air conditioner means the indoor evaporator temperature sensor has been detected as either open-circuit or short-circuit by the control board. This sensor monitors the temperature of the evaporator coil and is critical for proper cooling cycle management. The unit will disable normal operation to prevent damage when this fault is detected. The issue can stem from a loose wiring connection, a damaged harness, or a failed sensor.

It is not recommended to continue operating the unit while the F2 fault is active. The evaporator temperature sensor plays a key role in preventing coil icing and protecting the compressor from abnormal operating conditions. Running the unit without a functioning sensor signal could lead to coil freeze-up or compressor damage over time.

A power reset may temporarily clear the F2 code, but the fault will return if the underlying problem with the sensor or its wiring is not corrected. Resetting without repairing the root cause does not restore proper sensor function. For a lasting fix, the wiring connections and the thermistor itself need to be inspected and repaired or replaced as needed.

Checking and reseating the wiring connector between the evaporator sensor and the control board is a straightforward step that a careful DIYer can attempt after unplugging the unit. If the connector is secure and the fault persists, testing the thermistor with a multimeter and replacing it if necessary is a moderate-level repair. If you are not comfortable working inside the unit or reading electrical components, a technician is the safer choice.

If the fix is simply reseating a loose connector, there may be no parts cost, with a service call typically ranging from $75 to $150. Replacing the evaporator thermistor itself is a relatively inexpensive part, usually in the $15 to $50 range, but labor for a technician visit can bring the total to $100 to $250 depending on your location and the service provider.