Bauknecht Faulty Mechanical Thermostat

Temperature control knob turns but temperature does not change or is erratic on mechanical models.

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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

Worn thermostat contacts, Broken capillary sensor bulb, Capillary pulled out of cavity, Internal thermostat failure

How to Fix / Troubleshooting

Safety first: Isolate the oven from mains before working on the thermostat.

  • Inspect capillary: Locate the thermostat capillary tube and bulb inside the cavity. Ensure it is intact and correctly positioned.
  • Continuity test: With the oven cold, test the thermostat contacts for continuity at different knob settings. If contacts do not open/close as expected, the thermostat is faulty.
  • Replace thermostat: Remove the knob and front panel, unscrew the thermostat, and carefully withdraw the capillary from the cavity. Install the new Bauknecht thermostat, routing the capillary along the original path.
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Repair Difficulty

Medium 3/5

Required Part

Oven Thermostat (Mechanical)
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