Display shows F2 and the unit may shut down or fail to start cooling.

Safety: Disconnect power before accessing the evaporator area.

• Access evaporator: Remove the front cover and filter to expose the evaporator coil.
• Locate freeze sensor: This sensor is usually clipped to the evaporator coil where icing is most likely. It may be the same as or separate from the evaporator thermistor.
• Check for ice: If the coil is heavily iced, allow the unit to thaw completely (leave unplugged with panels open for several hours). Clean the filter and ensure proper airflow.
• Inspect sensor and wiring: Verify the sensor is firmly attached to the coil and that wires are intact. Reseat the connector on the PCB.
• Test and replace: Measure sensor resistance and compare to specifications. Replace the freeze sensor if defective.
• Reassemble and test: After thawing, cleaning, and sensor replacement, reassemble and test. If F2 persists, the control board may be faulty.