25E
Samsung
Freezer Defrost Function Error
Display shows 25E; recurring frost buildup in freezer; defrost cycle not operating correctly.
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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
Defective defrost heater, Failed defrost sensor, Open defrost fuse or thermostat, Wiring harness issue, Main PCB defrost control failure
How to Fix / Troubleshooting
Safety: Unplug the freezer before working on the defrost system.
- Check for ice pattern: Remove the freezer rear panel. If the evaporator is fully encased in ice, the defrost system is not functioning.
- Test heater and thermostat: As with 24E, measure resistance of the defrost heater and continuity of the defrost thermostat/fuse. Replace any open components with Samsung OEM parts.
- Verify defrost sensor: Test the defrost sensor resistance at room temperature and compare to spec. Replace if out of range.
- Inspect wiring: Look for burnt connectors or damaged wires between heater, thermostat, sensor, and PCB.
- Reassemble and monitor: After replacing faulty parts, reassemble and restore power. If 25E recurs despite good components, the main PCB may need replacement by a qualified technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Freezer Defrost Heater
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