EF
Electrolux
High Temperature Alarm Sensor / Circuit Fault
Freezer shows EF; high temperature alarm may be active even when unit seems cold.
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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
Faulty high-temp sensor (if separate from main NTC), Loose sensor connection, Faulty alarm circuit on control board, Intermittent wiring harness
How to Fix / Troubleshooting
Safety first: Unplug the freezer before accessing sensors or the control board.
- 1. Confirm actual temperature: Use a separate freezer thermometer to verify internal temperature. If temperature is normal but EF shows, suspect a sensor/circuit fault.
- 2. Locate alarm sensor: Some Electrolux models use a dedicated alarm sensor near the top of the cabinet or in the air return.
- 3. Inspect and test sensor: Check the connector and wiring. Measure resistance and compare to spec. Replace if out of range.
- 4. Check harness continuity: Test wiring from sensor to control board and repair any breaks.
- 5. Replace control board if necessary: If sensor and wiring are good, replace the main control board to restore proper alarm function.
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Repair Difficulty
Medium
3/5
Required Part
High Temperature Sensor
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