Liebherr
Total Heating Failure
Oven does not heat at all; display and lights work but no warmth in any mode.
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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
Open thermal cut-out, Both bake and grill elements failed, Faulty main power relay, Loose connection at terminal block
How to Fix / Troubleshooting
Safety first: Disconnect the oven from mains power before any internal checks.
Step-by-step:
- Confirm that the correct cooking mode and temperature are selected and that any timer is not set to delay start or end the program.
- Inspect the terminal block for loose or burnt connections; tighten or replace as needed.
- Locate the thermal cut-out or safety thermostat (often on the top of the cavity). Test for continuity; if open and non-resettable, replace it.
- Test both lower and upper heating elements for continuity; replace any that are open circuit.
- If all safety devices and elements are good, the main power relay or control board is likely faulty and should be replaced.
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Repair Difficulty
Hard
4/5
Required Part
Thermal Cut-Out / Safety Thermostat
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