E8
Thermador Cooling Fan Speed / Fan Feedback Error

Induction cooktop displays E8 and may limit power or shut down.

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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 cooling fan motor, Obstructed fan blades, Loose fan connector, Faulty fan tachometer feedback circuit on power module

How to Fix / Troubleshooting

Safety first: Disconnect power at the breaker before accessing internal components.

  • Listen for fan: When any zone is on, you should hear the cooling fan. If it is silent or unusually loud, there may be a problem.
  • Internal access: Remove the cooktop and bottom cover to expose the fan assembly.
  • Inspect fan: Check for debris, insulation, or wiring contacting the blades. Spin the fan by hand; it should rotate freely.
  • Check wiring: Ensure the fan connector is fully seated on the power module and that wires are not damaged.
  • Clean dust: Use compressed air or a soft brush to remove dust buildup from the fan and vents.

If the fan does not run when power is applied and zones are active, replace the cooling fan assembly. If a new fan still results in E8, the fan control circuit on the power module is likely defective and the module will need replacement.

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Repair Difficulty

Hard 4/5

Required Part

Cooling Fan Assembly
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