Why isn't the light on?

There are two cases that need to be distinguished.

First: the knob oven is not after the oven is powered on, the oven will work, it is necessary to adjust the knob first, the oven will work, the oven will work, the lamp will be lit, the knob oven lamp is long bright until the end of baking.

Second: electronic oven The same, the oven light is also working when it will be bright, but unlike the knob oven, the electronic oven after a few minutes of work, the lighting will automatically turn off, energy saving, at this time press the knob light will be re-lit.