F3 displayed; unit may stop in heating mode or show poor heating performance.

Safety Warning

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

Failed outdoor ambient NTC sensor, Sensor exposed or relocated away from design position, Wiring damage from weather, Outdoor PCB sensor circuit fault

How to Fix / Troubleshooting

Safety: Isolate power at the outdoor disconnect before opening the unit.

Steps:

Locate sensor: The outdoor ambient sensor is usually mounted on the outdoor unit frame away from direct discharge air, often near the coil.
Check mounting: Ensure it is in free air, not touching hot pipes or the compressor.
Inspect cable: Look for UV damage, cracks, or rodent bites on the sensor cable. Replace if damaged.
Replace sensor: If readings are suspect or F3 persists, install a new Gorenje outdoor ambient sensor.

Repair Difficulty

Medium 3/5

Required Part

Outdoor Ambient Temperature Sensor (NTC)

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