F8
Liebherr
Cooling System Failure
Induction cooktop displays F8 and zones may pulse or not heat 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 cooling fan motor, Blocked air intake or exhaust, Fan control circuit failure on power board, Excessive grease/dust buildup
How to Fix / Troubleshooting
Safety first: Disconnect the cooktop from mains power. Wait for all components to cool before opening the unit.
User actions:
- Ensure that cabinet vents and cut-outs specified in the Liebherr installation guide are present and not blocked by panels or stored items.
- Do not operate the cooktop without proper ventilation space beneath.
Technician actions:
- Access the underside of the cooktop and locate the cooling fan and air channels.
- Clean dust and grease from the fan blades, motor, and vents using a soft brush and vacuum.
- Manually spin the fan to check for free movement; if stiff or noisy, replace the fan motor assembly.
- Verify that the fan receives the correct voltage from the power board when zones are active; if not, suspect a fan driver circuit fault on the power module.
- Replace the power module if it fails to energize a known-good fan.
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Repair Difficulty
Medium
3/5
Required Part
Cooling Fan Motor
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