F4
Fagor
Compressor Overload / Start Error
Freezer shows F4; compressor may not start; clicking noise from rear.
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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
Failed start relay, Open overload protector, High compressor mechanical resistance, Low supply voltage
How to Fix / Troubleshooting
Safety first: Unplug the freezer before accessing the compressor area.
- Check supply voltage: Ensure the outlet provides correct voltage and is not shared with heavy loads.
- Inspect start device: Remove the Fagor start relay/overload from the compressor and check for burn marks or rattling. Replace if suspect.
- Compressor test: Measure winding resistance and check for shorts to ground. Abnormal readings indicate a failing compressor requiring professional replacement.
- Allow cool-down: If the compressor is very hot, let it cool for 30–60 minutes before retrying. Persistent F4 after cool-down suggests a hardware fault.
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Repair Difficulty
Professional Required
5/5
Required Part
Compressor Start Relay and Overload Protector
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