Model Number: HEI7282U/09
Brand: Bosch
Age: 6-10 years

Our Bosch HEI7282U/09 oven has started taking a very long time to preheat. The oven indicates that it is preheating and shows temperatures below the set temperature. I've confirmed that the temperature display is accurate using a high quality thermometer. I turned off the breaker to the oven for over a minute to reset it and the problem persists. I've tried to use both bake and convection bake and experienced the slow preheating.