Unit shows F2 and may run erratically, overshooting set temperature.

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

Open or shorted indoor pipe thermistor, Sensor dislodged from suction line, Damaged sensor harness, Faulty indoor PCB sensor circuit

Safety first: Disconnect power at the breaker.

Steps to try:

Find the pipe sensor: It is typically clipped to the larger refrigerant pipe near the indoor coil.
Check attachment: Ensure the sensor is tightly clipped and insulated with foam tape for accurate readings.
Inspect wiring: Look for nicks or pulled wires along the harness.
Test resistance: Measure with a multimeter and compare to spec. Replace if out of range.

When to call a technician: Persistent F2 with a good sensor suggests PCB failure.

Medium 3/5

Indoor Pipe Temperature Sensor

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