Whirlpool air conditioner displays F1 and may not respond to temperature changes correctly.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Drifted or failed room thermistor, sensor not positioned in airflow, wiring harness damage, control board misreading sensor

Safety: Unplug the unit before removing covers.

Steps:

Follow the same general procedure as for an E1 ambient sensor fault: locate the room thermistor near the air intake, inspect wiring, and test resistance.
Ensure the sensor is not touching the evaporator coil directly unless designed to do so; it should sense room air, not coil temperature.
Replace the room temperature sensor if resistance is out of specification.

If the sensor is good, the main control board may need replacement by a technician.

Medium 3/5

Room Temperature Sensor (Thermistor)

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