Samsung
Erratic Temperature Control
Freezer cycles between too cold (freezing items solid) and too warm (partial thaw) without stable temperature.
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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.
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Possible Causes
Intermittent temperature sensor, Loose sensor connection, Main PCB relay sticking, Evaporator fan intermittent failure
How to Fix / Troubleshooting
Safety: Disconnect power before inspecting wiring or boards.
- Monitor pattern: Note if the issue coincides with fan noises or defrost cycles.
- Inspect and test sensor: Check the freezer sensor wiring and connector. Replace the sensor if resistance readings are unstable when gently moving the wires.
- Check evaporator fan: Ensure the fan runs consistently when the compressor is on. Replace the Samsung evaporator fan motor if intermittent.
- PCB evaluation: If sensors and fans are good, the main PCB may have failing relays or components and should be tested or replaced by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Freezer Evaporator Temperature Sensor
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