Bush oven heats but takes a very long time to reach temperature or never reaches the set temperature.

Safety first: Isolate power before internal checks; surface checks can be done with power on but with caution.

• Check door seal: Inspect the rubber gasket around the door for splits, gaps, or missing sections. Replace if damaged to prevent heat loss.
• Verify element operation: With the oven on, carefully observe whether all elements (top, bottom, fan) glow or heat evenly. If one remains cold, test and replace it.
• Use an oven thermometer: Compare actual temperature to the set temperature. If consistently low, suspect thermostat or sensor issues and test/replace as needed.
• Check for fan operation (fan ovens): Ensure the convection fan runs; a non-spinning fan will cause uneven and slow heating.