F8
Miele
SuperFreeze / Fast Freeze Circuit Fault
Freezer shows F8 and may not maintain low temperature; super freeze function may be disabled
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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 SuperFreeze button or touch sensor, Faulty SuperFreeze indicator LED circuit, Control board output failure for SuperFreeze mode, Wiring fault between user interface and main PCB
How to Fix / Troubleshooting
Safety first: Disconnect power before removing the control panel or display module.
Steps:
- 1. Test SuperFreeze function: Attempt to activate SuperFreeze. If the indicator does not light or F8 appears, suspect the control path.
- 2. Inspect user interface: Remove the front control panel (usually clipped or screwed in). Check the tactile switch or touch sensor for physical damage or contamination.
- 3. Check ribbon cable / harness: Ensure the cable between the user interface and main control board is fully seated and not damaged.
- 4. Visual inspection of UI PCB: Look for corrosion from condensation, cracked solder joints, or burnt components. Clean light corrosion with isopropyl alcohol and a soft brush.
- 5. Replace faulty module: If the switch or UI PCB is defective, replace with the correct Miele user interface module. If UI is good but F8 persists, the main control board output may be faulty and require replacement.
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Repair Difficulty
Medium
3/5
Required Part
User Interface Control Module
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