Teka Underheating / Temperature Regulation Error

Oven heats but does not reach the set temperature; food takes much longer to cook than expected.

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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

Aged or drifting temperature sensor, partially failed heating element, miscalibrated thermostat, poor door seal causing heat loss

How to Fix / Troubleshooting

Safety first: Turn off power before testing internal components.

Diagnosis:

  • Use an oven thermometer to compare the actual cavity temperature with the set temperature. Note any consistent offset.
  • Inspect the door gasket for gaps, tears, or compression; replace if it does not seal evenly around the door.
  • Test the temperature sensor resistance at room temperature and at a known elevated temperature (if possible). Replace if readings are out of specification.
  • Check each heating element for hot spots or partial failure (sections that do not glow). Replace any suspect element.
  • Some Teka models allow temperature calibration via the settings menu; consult the manual to adjust if the offset is small and consistent.
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Repair Difficulty

Medium 3/5

Required Part

Oven Temperature Sensor (NTC Probe)
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