Oven heats but cannot reach set temperature or takes excessively long to preheat
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Disconnect power and allow the oven to cool before touching elements or seals.
Verify elements and flame:
- In electric models, visually inspect the bake and grill elements while heating; they should glow evenly. Dark or cold spots indicate a failing element.
- In gas models, check that the burner flame is strong and blue; a weak or yellow flame may indicate a gas or igniter issue.
Check temperature sensor and gasket:
- Test the oven temperature sensor resistance at room temperature; replace if out of spec.
- Inspect the door gasket for tears, gaps, or flattening. Replace if it does not seal evenly all around.
After replacing faulty parts, run a preheat test with an oven thermometer to confirm proper performance.
Repair Difficulty
Required Part
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