Thermador No Cooling – Power or Control Failure

The wine cooler is not cooling at all; the interior is warm, lights may work, but the compressor and fans are off.

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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

Tripped household breaker or blown fuse, Faulty power cord or outlet, Failed main control board, Open thermal fuse or safety thermostat (if equipped)

How to Fix / Troubleshooting

Safety: Do not work on live circuits. Turn off power at the breaker before inspecting the wiring.

Steps:

  • Verify power: Plug a lamp or small appliance into the same outlet to confirm it has power. Reset the breaker if it is tripped.
  • Inspect power cord: Check for cuts, burns, or a loose plug. Replace the cord if it is damaged.
  • Check internal fuses: Remove the rear panel and inspect the main control board for onboard fuses. Test continuity and replace only with identical rated fuses if they are blown.
  • Control board: If the outlet and cord are good but no fans or compressor ever run, the main control board may have failed and should be replaced.

Note: If you are not comfortable testing live voltage, contact a qualified technician.

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Repair Difficulty

Medium 3/5

Required Part

Main Control Board
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